diff --git a/dist/setup/index.js b/dist/setup/index.js
index b810e67c1..d415cbd8a 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -93806,7 +93806,13 @@ class DotnetVersionResolver {
                 allowRetries: true,
                 maxRetries: 3
             });
-            const response = yield httpClient.getJson(DotnetVersionResolver.DotnetCoreIndexUrl);
+            let response;
+            try {
+                response = yield httpClient.getJson(DotnetVersionResolver.DotnetCoreIndexUrl);
+            }
+            catch (error) {
+                response = yield httpClient.getJson(DotnetVersionResolver.DotnetCoreIndexFallbackUrl);
+            }
             const result = response.result || {};
             const releasesInfo = result['releases-index'];
             const releaseInfo = releasesInfo.find(info => {
@@ -93821,7 +93827,8 @@ class DotnetVersionResolver {
     }
 }
 exports.DotnetVersionResolver = DotnetVersionResolver;
-DotnetVersionResolver.DotnetCoreIndexUrl = 'https://dotnetcli.azureedge.net/dotnet/release-metadata/releases-index.json';
+DotnetVersionResolver.DotnetCoreIndexUrl = 'https://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json';
+DotnetVersionResolver.DotnetCoreIndexFallbackUrl = 'https://dotnetcli.azureedge.net/dotnet/release-metadata/releases-index.json';
 class DotnetInstallScript {
     constructor() {
         this.scriptName = utils_1.IS_WINDOWS ? 'install-dotnet.ps1' : 'install-dotnet.sh';
diff --git a/externals/install-dotnet.ps1 b/externals/install-dotnet.ps1
index a5519f38d..ab38847af 100644
--- a/externals/install-dotnet.ps1
+++ b/externals/install-dotnet.ps1
@@ -1,1603 +1,1619 @@
-#
-# Copyright (c) .NET Foundation and contributors. All rights reserved.
-# Licensed under the MIT license. See LICENSE file in the project root for full license information.
-#
-
-<#
-.SYNOPSIS
-    Installs dotnet cli
-.DESCRIPTION
-    Installs dotnet cli. If dotnet installation already exists in the given directory
-    it will update it only if the requested version differs from the one already installed.
-
-    Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:
-    - The SDK needs to be installed without user interaction and without admin rights.
-    - The SDK installation doesn't need to persist across multiple CI runs.
-    To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.
-
-.PARAMETER Channel
-    Default: LTS
-    Download from the Channel specified. Possible values:
-    - STS - the most recent Standard Term Support release
-    - LTS - the most recent Long Term Support release
-    - 2-part version in a format A.B - represents a specific release
-          examples: 2.0, 1.0
-    - 3-part version in a format A.B.Cxx - represents a specific SDK release
-          examples: 5.0.1xx, 5.0.2xx
-          Supported since 5.0 release
-    Warning: Value "Current" is deprecated for the Channel parameter. Use "STS" instead.
-    Note: The version parameter overrides the channel parameter when any version other than 'latest' is used.
-.PARAMETER Quality
-    Download the latest build of specified quality in the channel. The possible values are: daily, signed, validated, preview, GA.
-    Works only in combination with channel. Not applicable for STS and LTS channels and will be ignored if those channels are used. 
-    For SDK use channel in A.B.Cxx format: using quality together with channel in A.B format is not supported.
-    Supported since 5.0 release.
-    Note: The version parameter overrides the channel parameter when any version other than 'latest' is used, and therefore overrides the quality.     
-.PARAMETER Version
-    Default: latest
-    Represents a build version on specific channel. Possible values:
-    - latest - the latest build on specific channel
-    - 3-part version in a format A.B.C - represents specific version of build
-          examples: 2.0.0-preview2-006120, 1.1.0
-.PARAMETER Internal
-    Download internal builds. Requires providing credentials via -FeedCredential parameter.
-.PARAMETER FeedCredential
-    Token to access Azure feed. Used as a query string to append to the Azure feed.
-    This parameter typically is not specified.
-.PARAMETER InstallDir
-    Default: %LocalAppData%\Microsoft\dotnet
-    Path to where to install dotnet. Note that binaries will be placed directly in a given directory.
-.PARAMETER Architecture
-    Default: <auto> - this value represents currently running OS architecture
-    Architecture of dotnet binaries to be installed.
-    Possible values are: <auto>, amd64, x64, x86, arm64, arm
-.PARAMETER SharedRuntime
-    This parameter is obsolete and may be removed in a future version of this script.
-    The recommended alternative is '-Runtime dotnet'.
-    Installs just the shared runtime bits, not the entire SDK.
-.PARAMETER Runtime
-    Installs just a shared runtime, not the entire SDK.
-    Possible values:
-        - dotnet     - the Microsoft.NETCore.App shared runtime
-        - aspnetcore - the Microsoft.AspNetCore.App shared runtime
-        - windowsdesktop - the Microsoft.WindowsDesktop.App shared runtime
-.PARAMETER DryRun
-    If set it will not perform installation but instead display what command line to use to consistently install
-    currently requested version of dotnet cli. In example if you specify version 'latest' it will display a link
-    with specific version so that this command can be used deterministicly in a build script.
-    It also displays binaries location if you prefer to install or download it yourself.
-.PARAMETER NoPath
-    By default this script will set environment variable PATH for the current process to the binaries folder inside installation folder.
-    If set it will display binaries location but not set any environment variable.
-.PARAMETER Verbose
-    Displays diagnostics information.
-.PARAMETER AzureFeed
-    Default: https://dotnetcli.azureedge.net/dotnet
-    For internal use only.
-    Allows using a different storage to download SDK archives from.
-    This parameter is only used if $NoCdn is false.
-.PARAMETER UncachedFeed
-    For internal use only.
-    Allows using a different storage to download SDK archives from.
-    This parameter is only used if $NoCdn is true.
-.PARAMETER ProxyAddress
-    If set, the installer will use the proxy when making web requests
-.PARAMETER ProxyUseDefaultCredentials
-    Default: false
-    Use default credentials, when using proxy address.
-.PARAMETER ProxyBypassList
-    If set with ProxyAddress, will provide the list of comma separated urls that will bypass the proxy
-.PARAMETER SkipNonVersionedFiles
-    Default: false
-    Skips installing non-versioned files if they already exist, such as dotnet.exe.
-.PARAMETER NoCdn
-    Disable downloading from the Azure CDN, and use the uncached feed directly.
-.PARAMETER JSonFile
-    Determines the SDK version from a user specified global.json file
-    Note: global.json must have a value for 'SDK:Version'
-.PARAMETER DownloadTimeout
-    Determines timeout duration in seconds for dowloading of the SDK file
-    Default: 1200 seconds (20 minutes)
-.PARAMETER KeepZip
-    If set, downloaded file is kept
-.PARAMETER ZipPath
-    Use that path to store installer, generated by default
-.EXAMPLE
-    dotnet-install.ps1 -Version 7.0.401
-    Installs the .NET SDK version 7.0.401
-.EXAMPLE
-    dotnet-install.ps1 -Channel 8.0 -Quality GA
-    Installs the latest GA (general availability) version of the .NET 8.0 SDK
-#>
-[cmdletbinding()]
-param(
-   [string]$Channel="LTS",
-   [string]$Quality,
-   [string]$Version="Latest",
-   [switch]$Internal,
-   [string]$JSonFile,
-   [Alias('i')][string]$InstallDir="<auto>",
-   [string]$Architecture="<auto>",
-   [string]$Runtime,
-   [Obsolete("This parameter may be removed in a future version of this script. The recommended alternative is '-Runtime dotnet'.")]
-   [switch]$SharedRuntime,
-   [switch]$DryRun,
-   [switch]$NoPath,
-   [string]$AzureFeed,
-   [string]$UncachedFeed,
-   [string]$FeedCredential,
-   [string]$ProxyAddress,
-   [switch]$ProxyUseDefaultCredentials,
-   [string[]]$ProxyBypassList=@(),
-   [switch]$SkipNonVersionedFiles,
-   [switch]$NoCdn,
-   [int]$DownloadTimeout=1200,
-   [switch]$KeepZip,
-   [string]$ZipPath=[System.IO.Path]::combine([System.IO.Path]::GetTempPath(), [System.IO.Path]::GetRandomFileName()),
-   [switch]$Help
-)
-
-Set-StrictMode -Version Latest
-$ErrorActionPreference="Stop"
-$ProgressPreference="SilentlyContinue"
-
-function Say($str) {
-    try {
-        Write-Host "dotnet-install: $str"
-    }
-    catch {
-        # Some platforms cannot utilize Write-Host (Azure Functions, for instance). Fall back to Write-Output
-        Write-Output "dotnet-install: $str"
-    }
-}
-
-function Say-Warning($str) {
-    try {
-        Write-Warning "dotnet-install: $str"
-    }
-    catch {
-        # Some platforms cannot utilize Write-Warning (Azure Functions, for instance). Fall back to Write-Output
-        Write-Output "dotnet-install: Warning: $str"
-    }
-}
-
-# Writes a line with error style settings.
-# Use this function to show a human-readable comment along with an exception.
-function Say-Error($str) {
-    try {
-        # Write-Error is quite oververbose for the purpose of the function, let's write one line with error style settings.
-        $Host.UI.WriteErrorLine("dotnet-install: $str")
-    }
-    catch {
-        Write-Output "dotnet-install: Error: $str"
-    }
-}
-
-function Say-Verbose($str) {
-    try {
-        Write-Verbose "dotnet-install: $str"
-    }
-    catch {
-        # Some platforms cannot utilize Write-Verbose (Azure Functions, for instance). Fall back to Write-Output
-        Write-Output "dotnet-install: $str"
-    }
-}
-
-function Measure-Action($name, $block) {
-    $time = Measure-Command $block
-    $totalSeconds = $time.TotalSeconds
-    Say-Verbose "Action '$name' took $totalSeconds seconds"
-}
-
-function Get-Remote-File-Size($zipUri) {
-    try {
-        $response = Invoke-WebRequest -Uri $zipUri -Method Head
-        $fileSize = $response.Headers["Content-Length"]
-        if ((![string]::IsNullOrEmpty($fileSize))) {
-            Say "Remote file $zipUri size is $fileSize bytes."
-        
-            return $fileSize
-        }
-    }
-    catch {
-        Say-Verbose "Content-Length header was not extracted for $zipUri."
-    }
-
-    return $null
-}
-
-function Say-Invocation($Invocation) {
-    $command = $Invocation.MyCommand;
-    $args = (($Invocation.BoundParameters.Keys | foreach { "-$_ `"$($Invocation.BoundParameters[$_])`"" }) -join " ")
-    Say-Verbose "$command $args"
-}
-
-function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [System.Threading.CancellationToken]$cancellationToken = [System.Threading.CancellationToken]::None, [int]$MaxAttempts = 3, [int]$SecondsBetweenAttempts = 1) {
-    $Attempts = 0
-    $local:startTime = $(get-date)
-
-    while ($true) {
-        try {
-            return & $ScriptBlock
-        }
-        catch {
-            $Attempts++
-            if (($Attempts -lt $MaxAttempts) -and -not $cancellationToken.IsCancellationRequested) {
-                Start-Sleep $SecondsBetweenAttempts
-            }
-            else {
-                $local:elapsedTime = $(get-date) - $local:startTime
-                if (($local:elapsedTime.TotalSeconds - $DownloadTimeout) -gt 0 -and -not $cancellationToken.IsCancellationRequested) {
-                    throw New-Object System.TimeoutException("Failed to reach the server: connection timeout: default timeout is $DownloadTimeout second(s)");
-                }
-                throw;
-            }
-        }
-    }
-}
-
-function Get-Machine-Architecture() {
-    Say-Invocation $MyInvocation
-
-    # On PS x86, PROCESSOR_ARCHITECTURE reports x86 even on x64 systems.
-    # To get the correct architecture, we need to use PROCESSOR_ARCHITEW6432.
-    # PS x64 doesn't define this, so we fall back to PROCESSOR_ARCHITECTURE.
-    # Possible values: amd64, x64, x86, arm64, arm
-    if( $ENV:PROCESSOR_ARCHITEW6432 -ne $null ) {
-        return $ENV:PROCESSOR_ARCHITEW6432
-    }
-
-    try {        
-        if( ((Get-CimInstance -ClassName CIM_OperatingSystem).OSArchitecture) -like "ARM*") {
-            if( [Environment]::Is64BitOperatingSystem )
-            {
-                return "arm64"
-            }  
-            return "arm"
-        }
-    }
-    catch {
-        # Machine doesn't support Get-CimInstance
-    }
-
-    return $ENV:PROCESSOR_ARCHITECTURE
-}
-
-function Get-CLIArchitecture-From-Architecture([string]$Architecture) {
-    Say-Invocation $MyInvocation
-
-    if ($Architecture -eq "<auto>") {
-        $Architecture = Get-Machine-Architecture
-    }
-
-    switch ($Architecture.ToLowerInvariant()) {
-        { ($_ -eq "amd64") -or ($_ -eq "x64") } { return "x64" }
-        { $_ -eq "x86" } { return "x86" }
-        { $_ -eq "arm" } { return "arm" }
-        { $_ -eq "arm64" } { return "arm64" }
-        default { throw "Architecture '$Architecture' not supported. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues" }
-    }
-}
-
-function ValidateFeedCredential([string] $FeedCredential)
-{
-    if ($Internal -and [string]::IsNullOrWhitespace($FeedCredential)) {
-        $message = "Provide credentials via -FeedCredential parameter."
-        if ($DryRun) {
-            Say-Warning "$message"
-        } else {
-            throw "$message"
-        }
-    }
-    
-    #FeedCredential should start with "?", for it to be added to the end of the link.
-    #adding "?" at the beginning of the FeedCredential if needed.
-    if ((![string]::IsNullOrWhitespace($FeedCredential)) -and ($FeedCredential[0] -ne '?')) {
-        $FeedCredential = "?" + $FeedCredential
-    }
-
-    return $FeedCredential
-}
-function Get-NormalizedQuality([string]$Quality) {
-    Say-Invocation $MyInvocation
-
-    if ([string]::IsNullOrEmpty($Quality)) {
-        return ""
-    }
-
-    switch ($Quality) {
-        { @("daily", "signed", "validated", "preview") -contains $_ } { return $Quality.ToLowerInvariant() }
-        #ga quality is available without specifying quality, so normalizing it to empty
-        { $_ -eq "ga" } { return "" }
-        default { throw "'$Quality' is not a supported value for -Quality option. Supported values are: daily, signed, validated, preview, ga. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues." }
-    }
-}
-
-function Get-NormalizedChannel([string]$Channel) {
-    Say-Invocation $MyInvocation
-
-    if ([string]::IsNullOrEmpty($Channel)) {
-        return ""
-    }
-
-    if ($Channel.Contains("Current")) {
-        Say-Warning 'Value "Current" is deprecated for -Channel option. Use "STS" instead.'
-    }
-
-    if ($Channel.StartsWith('release/')) {
-        Say-Warning 'Using branch name with -Channel option is no longer supported with newer releases. Use -Quality option with a channel in X.Y format instead, such as "-Channel 5.0 -Quality Daily."'
-    }
-
-    switch ($Channel) {
-        { $_ -eq "lts" } { return "LTS" }
-        { $_ -eq "sts" } { return "STS" }
-        { $_ -eq "current" } { return "STS" }
-        default { return $Channel.ToLowerInvariant() }
-    }
-}
-
-function Get-NormalizedProduct([string]$Runtime) {
-    Say-Invocation $MyInvocation
-
-    switch ($Runtime) {
-        { $_ -eq "dotnet" } { return "dotnet-runtime" }
-        { $_ -eq "aspnetcore" } { return "aspnetcore-runtime" }
-        { $_ -eq "windowsdesktop" } { return "windowsdesktop-runtime" }
-        { [string]::IsNullOrEmpty($_) } { return "dotnet-sdk" }
-        default { throw "'$Runtime' is not a supported value for -Runtime option, supported values are: dotnet, aspnetcore, windowsdesktop. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues." }
-    }
-}
-
-
-# The version text returned from the feeds is a 1-line or 2-line string:
-# For the SDK and the dotnet runtime (2 lines):
-# Line 1: # commit_hash
-# Line 2: # 4-part version
-# For the aspnetcore runtime (1 line):
-# Line 1: # 4-part version
-function Get-Version-From-LatestVersion-File-Content([string]$VersionText) {
-    Say-Invocation $MyInvocation
-
-    $Data = -split $VersionText
-
-    $VersionInfo = @{
-        CommitHash = $(if ($Data.Count -gt 1) { $Data[0] })
-        Version = $Data[-1] # last line is always the version number.
-    }
-    return $VersionInfo
-}
-
-function Load-Assembly([string] $Assembly) {
-    try {
-        Add-Type -Assembly $Assembly | Out-Null
-    }
-    catch {
-        # On Nano Server, Powershell Core Edition is used.  Add-Type is unable to resolve base class assemblies because they are not GAC'd.
-        # Loading the base class assemblies is not unnecessary as the types will automatically get resolved.
-    }
-}
-
-function GetHTTPResponse([Uri] $Uri, [bool]$HeaderOnly, [bool]$DisableRedirect, [bool]$DisableFeedCredential)
-{
-    $cts = New-Object System.Threading.CancellationTokenSource
-
-    $downloadScript = {
-
-        $HttpClient = $null
-
-        try {
-            # HttpClient is used vs Invoke-WebRequest in order to support Nano Server which doesn't support the Invoke-WebRequest cmdlet.
-            Load-Assembly -Assembly System.Net.Http
-
-            if(-not $ProxyAddress) {
-                try {
-                    # Despite no proxy being explicitly specified, we may still be behind a default proxy
-                    $DefaultProxy = [System.Net.WebRequest]::DefaultWebProxy;
-                    if($DefaultProxy -and (-not $DefaultProxy.IsBypassed($Uri))) {
-                        if ($null -ne $DefaultProxy.GetProxy($Uri)) {
-                            $ProxyAddress = $DefaultProxy.GetProxy($Uri).OriginalString
-                        } else {
-                            $ProxyAddress = $null
-                        }
-                        $ProxyUseDefaultCredentials = $true
-                    }
-                } catch {
-                    # Eat the exception and move forward as the above code is an attempt
-                    #    at resolving the DefaultProxy that may not have been a problem.
-                    $ProxyAddress = $null
-                    Say-Verbose("Exception ignored: $_.Exception.Message - moving forward...")
-                }
-            }
-
-            $HttpClientHandler = New-Object System.Net.Http.HttpClientHandler
-            if($ProxyAddress) {
-                $HttpClientHandler.Proxy =  New-Object System.Net.WebProxy -Property @{
-                    Address=$ProxyAddress;
-                    UseDefaultCredentials=$ProxyUseDefaultCredentials;
-                    BypassList = $ProxyBypassList;
-                }
-            }       
-            if ($DisableRedirect)
-            {
-                $HttpClientHandler.AllowAutoRedirect = $false
-            }
-            $HttpClient = New-Object System.Net.Http.HttpClient -ArgumentList $HttpClientHandler
-
-            # Default timeout for HttpClient is 100s.  For a 50 MB download this assumes 500 KB/s average, any less will time out
-            # Defaulting to 20 minutes allows it to work over much slower connections.
-            $HttpClient.Timeout = New-TimeSpan -Seconds $DownloadTimeout
-
-            if ($HeaderOnly){
-                $completionOption = [System.Net.Http.HttpCompletionOption]::ResponseHeadersRead
-            }
-            else {
-                $completionOption = [System.Net.Http.HttpCompletionOption]::ResponseContentRead
-            }
-
-            if ($DisableFeedCredential) {
-                $UriWithCredential = $Uri
-            }
-            else {
-                $UriWithCredential = "${Uri}${FeedCredential}"
-            }
-
-            $Task = $HttpClient.GetAsync("$UriWithCredential", $completionOption).ConfigureAwait("false");
-            $Response = $Task.GetAwaiter().GetResult();
-
-            if (($null -eq $Response) -or ((-not $HeaderOnly) -and (-not ($Response.IsSuccessStatusCode)))) {
-                # The feed credential is potentially sensitive info. Do not log FeedCredential to console output.
-                $DownloadException = [System.Exception] "Unable to download $Uri."
-
-                if ($null -ne $Response) {
-                    $DownloadException.Data["StatusCode"] = [int] $Response.StatusCode
-                    $DownloadException.Data["ErrorMessage"] = "Unable to download $Uri. Returned HTTP status code: " + $DownloadException.Data["StatusCode"]
-
-                    if (404 -eq [int] $Response.StatusCode)
-                    {
-                        $cts.Cancel()
-                    }
-                }
-
-                throw $DownloadException
-            }
-
-            return $Response
-        }
-        catch [System.Net.Http.HttpRequestException] {
-            $DownloadException = [System.Exception] "Unable to download $Uri."
-
-            # Pick up the exception message and inner exceptions' messages if they exist
-            $CurrentException = $PSItem.Exception
-            $ErrorMsg = $CurrentException.Message + "`r`n"
-            while ($CurrentException.InnerException) {
-              $CurrentException = $CurrentException.InnerException
-              $ErrorMsg += $CurrentException.Message + "`r`n"
-            }
-
-            # Check if there is an issue concerning TLS.
-            if ($ErrorMsg -like "*SSL/TLS*") {
-                $ErrorMsg += "Ensure that TLS 1.2 or higher is enabled to use this script.`r`n"
-            }
-
-            $DownloadException.Data["ErrorMessage"] = $ErrorMsg
-            throw $DownloadException
-        }
-        finally {
-             if ($null -ne $HttpClient) {
-                $HttpClient.Dispose()
-            }
-        }
-    }
-
-    try {
-        return Invoke-With-Retry $downloadScript $cts.Token
-    }
-    finally
-    {
-        if ($null -ne $cts)
-        {
-            $cts.Dispose()
-        }
-    }
-}
-
-function Get-Version-From-LatestVersion-File([string]$AzureFeed, [string]$Channel) {
-    Say-Invocation $MyInvocation
-
-    $VersionFileUrl = $null
-    if ($Runtime -eq "dotnet") {
-        $VersionFileUrl = "$AzureFeed/Runtime/$Channel/latest.version"
-    }
-    elseif ($Runtime -eq "aspnetcore") {
-        $VersionFileUrl = "$AzureFeed/aspnetcore/Runtime/$Channel/latest.version"
-    }
-    elseif ($Runtime -eq "windowsdesktop") {
-        $VersionFileUrl = "$AzureFeed/WindowsDesktop/$Channel/latest.version"
-    }
-    elseif (-not $Runtime) {
-        $VersionFileUrl = "$AzureFeed/Sdk/$Channel/latest.version"
-    }
-    else {
-        throw "Invalid value for `$Runtime"
-    }
-
-    Say-Verbose "Constructed latest.version URL: $VersionFileUrl"
-
-    try {
-        $Response = GetHTTPResponse -Uri $VersionFileUrl
-    }
-    catch {
-        Say-Verbose "Failed to download latest.version file."
-        throw
-    }
-    $StringContent = $Response.Content.ReadAsStringAsync().Result
-
-    switch ($Response.Content.Headers.ContentType) {
-        { ($_ -eq "application/octet-stream") } { $VersionText = $StringContent }
-        { ($_ -eq "text/plain") } { $VersionText = $StringContent }
-        { ($_ -eq "text/plain; charset=UTF-8") } { $VersionText = $StringContent }
-        default { throw "``$Response.Content.Headers.ContentType`` is an unknown .version file content type." }
-    }
-
-    $VersionInfo = Get-Version-From-LatestVersion-File-Content $VersionText
-
-    return $VersionInfo
-}
-
-function Parse-Jsonfile-For-Version([string]$JSonFile) {
-    Say-Invocation $MyInvocation
-
-    If (-Not (Test-Path $JSonFile)) {
-        throw "Unable to find '$JSonFile'"
-    }
-    try {
-        $JSonContent = Get-Content($JSonFile) -Raw | ConvertFrom-Json | Select-Object -expand "sdk" -ErrorAction SilentlyContinue
-    }
-    catch {
-        Say-Error "Json file unreadable: '$JSonFile'"
-        throw
-    }
-    if ($JSonContent) {
-        try {
-            $JSonContent.PSObject.Properties | ForEach-Object {
-                $PropertyName = $_.Name
-                if ($PropertyName -eq "version") {
-                    $Version = $_.Value
-                    Say-Verbose "Version = $Version"
-                }
-            }
-        }
-        catch {
-            Say-Error "Unable to parse the SDK node in '$JSonFile'"
-            throw
-        }
-    }
-    else {
-        throw "Unable to find the SDK node in '$JSonFile'"
-    }
-    If ($Version -eq $null) {
-        throw "Unable to find the SDK:version node in '$JSonFile'"
-    }
-    return $Version
-}
-
-function Get-Specific-Version-From-Version([string]$AzureFeed, [string]$Channel, [string]$Version, [string]$JSonFile) {
-    Say-Invocation $MyInvocation
-
-    if (-not $JSonFile) {
-        if ($Version.ToLowerInvariant() -eq "latest") {
-            $LatestVersionInfo = Get-Version-From-LatestVersion-File -AzureFeed $AzureFeed -Channel $Channel
-            return $LatestVersionInfo.Version
-        }
-        else {
-            return $Version 
-        }
-    }
-    else {
-        return Parse-Jsonfile-For-Version $JSonFile
-    }
-}
-
-function Get-Download-Link([string]$AzureFeed, [string]$SpecificVersion, [string]$CLIArchitecture) {
-    Say-Invocation $MyInvocation
-
-    # If anything fails in this lookup it will default to $SpecificVersion
-    $SpecificProductVersion = Get-Product-Version -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion
-
-    if ($Runtime -eq "dotnet") {
-        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/dotnet-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
-    }
-    elseif ($Runtime -eq "aspnetcore") {
-        $PayloadURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/aspnetcore-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
-    }
-    elseif ($Runtime -eq "windowsdesktop") {
-        # The windows desktop runtime is part of the core runtime layout prior to 5.0
-        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/windowsdesktop-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
-        if ($SpecificVersion -match '^(\d+)\.(.*)$')
-        {
-            $majorVersion = [int]$Matches[1]
-            if ($majorVersion -ge 5)
-            {
-                $PayloadURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/windowsdesktop-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
-            }
-        }
-    }
-    elseif (-not $Runtime) {
-        $PayloadURL = "$AzureFeed/Sdk/$SpecificVersion/dotnet-sdk-$SpecificProductVersion-win-$CLIArchitecture.zip"
-    }
-    else {
-        throw "Invalid value for `$Runtime"
-    }
-
-    Say-Verbose "Constructed primary named payload URL: $PayloadURL"
-
-    return $PayloadURL, $SpecificProductVersion
-}
-
-function Get-LegacyDownload-Link([string]$AzureFeed, [string]$SpecificVersion, [string]$CLIArchitecture) {
-    Say-Invocation $MyInvocation
-
-    if (-not $Runtime) {
-        $PayloadURL = "$AzureFeed/Sdk/$SpecificVersion/dotnet-dev-win-$CLIArchitecture.$SpecificVersion.zip"
-    }
-    elseif ($Runtime -eq "dotnet") {
-        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/dotnet-win-$CLIArchitecture.$SpecificVersion.zip"
-    }
-    else {
-        return $null
-    }
-
-    Say-Verbose "Constructed legacy named payload URL: $PayloadURL"
-
-    return $PayloadURL
-}
-
-function Get-Product-Version([string]$AzureFeed, [string]$SpecificVersion, [string]$PackageDownloadLink) {
-    Say-Invocation $MyInvocation
-
-    # Try to get the version number, using the productVersion.txt file located next to the installer file.
-    $ProductVersionTxtURLs = (Get-Product-Version-Url $AzureFeed $SpecificVersion $PackageDownloadLink -Flattened $true),
-                             (Get-Product-Version-Url $AzureFeed $SpecificVersion $PackageDownloadLink -Flattened $false)
-    
-    Foreach ($ProductVersionTxtURL in $ProductVersionTxtURLs) {
-        Say-Verbose "Checking for the existence of $ProductVersionTxtURL"
-
-        try {
-            $productVersionResponse = GetHTTPResponse($productVersionTxtUrl)
-
-            if ($productVersionResponse.StatusCode -eq 200) {
-                $productVersion = $productVersionResponse.Content.ReadAsStringAsync().Result.Trim()
-                if ($productVersion -ne $SpecificVersion)
-                {
-                    Say "Using alternate version $productVersion found in $ProductVersionTxtURL"
-                }
-                return $productVersion
-            }
-            else {
-                Say-Verbose "Got StatusCode $($productVersionResponse.StatusCode) when trying to get productVersion.txt at $productVersionTxtUrl."
-            }
-        } 
-        catch {
-            Say-Verbose "Could not read productVersion.txt at $productVersionTxtUrl (Exception: '$($_.Exception.Message)'. )"
-        }
-    }
-
-    # Getting the version number with productVersion.txt has failed. Try parsing the download link for a version number.
-    if ([string]::IsNullOrEmpty($PackageDownloadLink))
-    {
-        Say-Verbose "Using the default value '$SpecificVersion' as the product version."
-        return $SpecificVersion
-    }
-
-    $productVersion = Get-ProductVersionFromDownloadLink $PackageDownloadLink $SpecificVersion
-    return $productVersion
-}
-
-function Get-Product-Version-Url([string]$AzureFeed, [string]$SpecificVersion, [string]$PackageDownloadLink, [bool]$Flattened) {
-    Say-Invocation $MyInvocation
-
-    $majorVersion=$null
-    if ($SpecificVersion -match '^(\d+)\.(.*)') {
-        $majorVersion = $Matches[1] -as[int]
-    }
-
-    $pvFileName='productVersion.txt'
-    if($Flattened) {
-        if(-not $Runtime) {
-            $pvFileName='sdk-productVersion.txt'
-        }
-        elseif($Runtime -eq "dotnet") {
-            $pvFileName='runtime-productVersion.txt'
-        }
-        else {
-            $pvFileName="$Runtime-productVersion.txt"
-        }
-    }
-
-    if ([string]::IsNullOrEmpty($PackageDownloadLink)) {
-        if ($Runtime -eq "dotnet") {
-            $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/$pvFileName"
-        }
-        elseif ($Runtime -eq "aspnetcore") {
-            $ProductVersionTxtURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/$pvFileName"
-        }
-        elseif ($Runtime -eq "windowsdesktop") {
-            # The windows desktop runtime is part of the core runtime layout prior to 5.0
-            $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/$pvFileName"
-            if ($majorVersion -ne $null -and $majorVersion -ge 5) {
-                $ProductVersionTxtURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/$pvFileName"
-            }
-        }
-        elseif (-not $Runtime) {
-            $ProductVersionTxtURL = "$AzureFeed/Sdk/$SpecificVersion/$pvFileName"
-        }
-        else {
-            throw "Invalid value '$Runtime' specified for `$Runtime"
-        }
-    }
-    else {
-        $ProductVersionTxtURL = $PackageDownloadLink.Substring(0, $PackageDownloadLink.LastIndexOf("/"))  + "/$pvFileName"
-    }
-
-    Say-Verbose "Constructed productVersion link: $ProductVersionTxtURL"
-
-    return $ProductVersionTxtURL
-}
-
-function Get-ProductVersionFromDownloadLink([string]$PackageDownloadLink, [string]$SpecificVersion)
-{
-    Say-Invocation $MyInvocation
-
-    #product specific version follows the product name
-    #for filename 'dotnet-sdk-3.1.404-win-x64.zip': the product version is 3.1.400
-    $filename = $PackageDownloadLink.Substring($PackageDownloadLink.LastIndexOf("/") + 1)
-    $filenameParts = $filename.Split('-')
-    if ($filenameParts.Length -gt 2)
-    {
-        $productVersion = $filenameParts[2]
-        Say-Verbose "Extracted product version '$productVersion' from download link '$PackageDownloadLink'."
-    }
-    else {
-        Say-Verbose "Using the default value '$SpecificVersion' as the product version."
-        $productVersion = $SpecificVersion
-    }
-    return $productVersion 
-}
-
-function Get-User-Share-Path() {
-    Say-Invocation $MyInvocation
-
-    $InstallRoot = $env:DOTNET_INSTALL_DIR
-    if (!$InstallRoot) {
-        $InstallRoot = "$env:LocalAppData\Microsoft\dotnet"
-    }
-    elseif ($InstallRoot -like "$env:ProgramFiles\dotnet\?*") {
-        Say-Warning "The install root specified by the environment variable DOTNET_INSTALL_DIR points to the sub folder of $env:ProgramFiles\dotnet which is the default dotnet install root using .NET SDK installer. It is better to keep aligned with .NET SDK installer."
-    }
-    return $InstallRoot
-}
-
-function Resolve-Installation-Path([string]$InstallDir) {
-    Say-Invocation $MyInvocation
-
-    if ($InstallDir -eq "<auto>") {
-        return Get-User-Share-Path
-    }
-    return $InstallDir
-}
-
-function Test-User-Write-Access([string]$InstallDir) {
-    try {
-        $tempFileName=[guid]::NewGuid().ToString()
-        $tempFilePath=Join-Path -Path $InstallDir -ChildPath $tempFileName
-        New-Item -Path $tempFilePath -ItemType File -Force
-        Remove-Item $tempFilePath -Force
-        return $true
-    } catch {
-        return $false
-    }
-}
-
-function Is-Dotnet-Package-Installed([string]$InstallRoot, [string]$RelativePathToPackage, [string]$SpecificVersion) {
-    Say-Invocation $MyInvocation
-
-    $DotnetPackagePath = Join-Path -Path $InstallRoot -ChildPath $RelativePathToPackage | Join-Path -ChildPath $SpecificVersion
-    Say-Verbose "Is-Dotnet-Package-Installed: DotnetPackagePath=$DotnetPackagePath"
-    return Test-Path $DotnetPackagePath -PathType Container
-}
-
-function Get-Absolute-Path([string]$RelativeOrAbsolutePath) {
-    # Too much spam
-    # Say-Invocation $MyInvocation
-
-    return $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($RelativeOrAbsolutePath)
-}
-
-function Get-Path-Prefix-With-Version($path) {
-    # example path with regex: shared/1.0.0-beta-12345/somepath
-    $match = [regex]::match($path, "/\d+\.\d+[^/]+/")
-    if ($match.Success) {
-        return $entry.FullName.Substring(0, $match.Index + $match.Length)
-    }
-
-    return $null
-}
-
-function Get-List-Of-Directories-And-Versions-To-Unpack-From-Dotnet-Package([System.IO.Compression.ZipArchive]$Zip, [string]$OutPath) {
-    Say-Invocation $MyInvocation
-
-    $ret = @()
-    foreach ($entry in $Zip.Entries) {
-        $dir = Get-Path-Prefix-With-Version $entry.FullName
-        if ($null -ne $dir) {
-            $path = Get-Absolute-Path $(Join-Path -Path $OutPath -ChildPath $dir)
-            if (-Not (Test-Path $path -PathType Container)) {
-                $ret += $dir
-            }
-        }
-    }
-
-    $ret = $ret | Sort-Object | Get-Unique
-
-    $values = ($ret | foreach { "$_" }) -join ";"
-    Say-Verbose "Directories to unpack: $values"
-
-    return $ret
-}
-
-# Example zip content and extraction algorithm:
-# Rule: files if extracted are always being extracted to the same relative path locally
-# .\
-#       a.exe   # file does not exist locally, extract
-#       b.dll   # file exists locally, override only if $OverrideFiles set
-#       aaa\    # same rules as for files
-#           ...
-#       abc\1.0.0\  # directory contains version and exists locally
-#           ...     # do not extract content under versioned part
-#       abc\asd\    # same rules as for files
-#            ...
-#       def\ghi\1.0.1\  # directory contains version and does not exist locally
-#           ...         # extract content
-function Extract-Dotnet-Package([string]$ZipPath, [string]$OutPath) {
-    Say-Invocation $MyInvocation
-
-    Load-Assembly -Assembly System.IO.Compression.FileSystem
-    Set-Variable -Name Zip
-    try {
-        $Zip = [System.IO.Compression.ZipFile]::OpenRead($ZipPath)
-
-        $DirectoriesToUnpack = Get-List-Of-Directories-And-Versions-To-Unpack-From-Dotnet-Package -Zip $Zip -OutPath $OutPath
-
-        foreach ($entry in $Zip.Entries) {
-            $PathWithVersion = Get-Path-Prefix-With-Version $entry.FullName
-            if (($null -eq $PathWithVersion) -Or ($DirectoriesToUnpack -contains $PathWithVersion)) {
-                $DestinationPath = Get-Absolute-Path $(Join-Path -Path $OutPath -ChildPath $entry.FullName)
-                $DestinationDir = Split-Path -Parent $DestinationPath
-                $OverrideFiles=$OverrideNonVersionedFiles -Or (-Not (Test-Path $DestinationPath))
-                if ((-Not $DestinationPath.EndsWith("\")) -And $OverrideFiles) {
-                    New-Item -ItemType Directory -Force -Path $DestinationDir | Out-Null
-                    [System.IO.Compression.ZipFileExtensions]::ExtractToFile($entry, $DestinationPath, $OverrideNonVersionedFiles)
-                }
-            }
-        }
-    }
-    catch
-    {
-        Say-Error "Failed to extract package. Exception: $_"
-        throw;
-    }
-    finally {
-        if ($null -ne $Zip) {
-            $Zip.Dispose()
-        }
-    }
-}
-
-function DownloadFile($Source, [string]$OutPath) {
-    if ($Source -notlike "http*") {
-        #  Using System.IO.Path.GetFullPath to get the current directory
-        #    does not work in this context - $pwd gives the current directory
-        if (![System.IO.Path]::IsPathRooted($Source)) {
-            $Source = $(Join-Path -Path $pwd -ChildPath $Source)
-        }
-        $Source = Get-Absolute-Path $Source
-        Say "Copying file from $Source to $OutPath"
-        Copy-Item $Source $OutPath
-        return
-    }
-
-    $Stream = $null
-    
-    try {
-        $Response = GetHTTPResponse -Uri $Source
-        $Stream = $Response.Content.ReadAsStreamAsync().Result
-        $File = [System.IO.File]::Create($OutPath)
-        $Stream.CopyTo($File)
-        $File.Close()
-
-        ValidateRemoteLocalFileSizes -LocalFileOutPath $OutPath -SourceUri $Source
-    }
-    finally {
-        if ($null -ne $Stream) {
-            $Stream.Dispose()
-        }
-    }
-}
-
-function ValidateRemoteLocalFileSizes([string]$LocalFileOutPath, $SourceUri) {
-    try {
-        $remoteFileSize = Get-Remote-File-Size -zipUri $SourceUri
-        $fileSize = [long](Get-Item $LocalFileOutPath).Length
-        Say "Downloaded file $SourceUri size is $fileSize bytes."
-    
-        if ((![string]::IsNullOrEmpty($remoteFileSize)) -and !([string]::IsNullOrEmpty($fileSize)) ) {
-            if ($remoteFileSize -ne $fileSize) {
-                Say "The remote and local file sizes are not equal. Remote file size is $remoteFileSize bytes and local size is $fileSize bytes. The local package may be corrupted."
-            }
-            else {
-                Say "The remote and local file sizes are equal."
-            }   
-        }
-        else {
-            Say "Either downloaded or local package size can not be measured. One of them may be corrupted."
-        }
-    }
-    catch {
-        Say "Either downloaded or local package size can not be measured. One of them may be corrupted."
-    }
-}
-
-function SafeRemoveFile($Path) {
-    try {
-        if (Test-Path $Path) {
-            Remove-Item $Path
-            Say-Verbose "The temporary file `"$Path`" was removed."
-        }
-        else {
-            Say-Verbose "The temporary file `"$Path`" does not exist, therefore is not removed."
-        }
-    }
-    catch {
-        Say-Warning "Failed to remove the temporary file: `"$Path`", remove it manually."
-    }
-}
-
-function Prepend-Sdk-InstallRoot-To-Path([string]$InstallRoot) {
-    $BinPath = Get-Absolute-Path $(Join-Path -Path $InstallRoot -ChildPath "")
-    if (-Not $NoPath) {
-        $SuffixedBinPath = "$BinPath;"
-        if (-Not $env:path.Contains($SuffixedBinPath)) {
-            Say "Adding to current process PATH: `"$BinPath`". Note: This change will not be visible if PowerShell was run as a child process."
-            $env:path = $SuffixedBinPath + $env:path
-        } else {
-            Say-Verbose "Current process PATH already contains `"$BinPath`""
-        }
-    }
-    else {
-        Say "Binaries of dotnet can be found in $BinPath"
-    }
-}
-
-function PrintDryRunOutput($Invocation, $DownloadLinks)
-{
-    Say "Payload URLs:"
-    
-    for ($linkIndex=0; $linkIndex -lt $DownloadLinks.count; $linkIndex++) {
-        Say "URL #$linkIndex - $($DownloadLinks[$linkIndex].type): $($DownloadLinks[$linkIndex].downloadLink)"
-    }
-    $RepeatableCommand = ".\$ScriptName -Version `"$SpecificVersion`" -InstallDir `"$InstallRoot`" -Architecture `"$CLIArchitecture`""
-    if ($Runtime -eq "dotnet") {
-       $RepeatableCommand+=" -Runtime `"dotnet`""
-    }
-    elseif ($Runtime -eq "aspnetcore") {
-       $RepeatableCommand+=" -Runtime `"aspnetcore`""
-    }
-
-    foreach ($key in $Invocation.BoundParameters.Keys) {
-        if (-not (@("Architecture","Channel","DryRun","InstallDir","Runtime","SharedRuntime","Version","Quality","FeedCredential") -contains $key)) {
-            $RepeatableCommand+=" -$key `"$($Invocation.BoundParameters[$key])`""
-        }
-    }
-    if ($Invocation.BoundParameters.Keys -contains "FeedCredential") {
-        $RepeatableCommand+=" -FeedCredential `"<feedCredential>`""
-    }
-    Say "Repeatable invocation: $RepeatableCommand"
-    if ($SpecificVersion -ne $EffectiveVersion)
-    {
-        Say "NOTE: Due to finding a version manifest with this runtime, it would actually install with version '$EffectiveVersion'"
-    }
-}
-
-function Get-AkaMSDownloadLink([string]$Channel, [string]$Quality, [bool]$Internal, [string]$Product, [string]$Architecture) {
-    Say-Invocation $MyInvocation 
-
-    #quality is not supported for LTS or STS channel
-    if (![string]::IsNullOrEmpty($Quality) -and (@("LTS", "STS") -contains $Channel)) {
-        $Quality = ""
-        Say-Warning "Specifying quality for STS or LTS channel is not supported, the quality will be ignored."
-    }
-    Say-Verbose "Retrieving primary payload URL from aka.ms link for channel: '$Channel', quality: '$Quality' product: '$Product', os: 'win', architecture: '$Architecture'." 
-   
-    #construct aka.ms link
-    $akaMsLink = "https://aka.ms/dotnet"
-    if ($Internal) {
-        $akaMsLink += "/internal"
-    }
-    $akaMsLink += "/$Channel"
-    if (-not [string]::IsNullOrEmpty($Quality)) {
-        $akaMsLink +="/$Quality"
-    }
-    $akaMsLink +="/$Product-win-$Architecture.zip"
-    Say-Verbose  "Constructed aka.ms link: '$akaMsLink'."
-    $akaMsDownloadLink=$null
-
-    for ($maxRedirections = 9; $maxRedirections -ge 0; $maxRedirections--)
-    {
-        #get HTTP response
-        #do not pass credentials as a part of the $akaMsLink and do not apply credentials in the GetHTTPResponse function
-        #otherwise the redirect link would have credentials as well
-        #it would result in applying credentials twice to the resulting link and thus breaking it, and in echoing credentials to the output as a part of redirect link
-        $Response= GetHTTPResponse -Uri $akaMsLink -HeaderOnly $true -DisableRedirect $true -DisableFeedCredential $true
-        Say-Verbose "Received response:`n$Response"
-
-        if ([string]::IsNullOrEmpty($Response)) {
-            Say-Verbose "The link '$akaMsLink' is not valid: failed to get redirect location. The resource is not available."
-            return $null
-        }
-
-        #if HTTP code is 301 (Moved Permanently), the redirect link exists
-        if  ($Response.StatusCode -eq 301)
-        {
-            try {
-                $akaMsDownloadLink = $Response.Headers.GetValues("Location")[0]
-
-                if ([string]::IsNullOrEmpty($akaMsDownloadLink)) {
-                    Say-Verbose "The link '$akaMsLink' is not valid: server returned 301 (Moved Permanently), but the headers do not contain the redirect location."
-                    return $null
-                }
-
-                Say-Verbose "The redirect location retrieved: '$akaMsDownloadLink'."
-                # This may yet be a link to another redirection. Attempt to retrieve the page again.
-                $akaMsLink = $akaMsDownloadLink
-                continue
-            }
-            catch {
-                Say-Verbose "The link '$akaMsLink' is not valid: failed to get redirect location."
-                return $null
-            }
-        }
-        elseif ((($Response.StatusCode -lt 300) -or ($Response.StatusCode -ge 400)) -and (-not [string]::IsNullOrEmpty($akaMsDownloadLink)))
-        {
-            # Redirections have ended.
-            return $akaMsDownloadLink
-        }
-
-        Say-Verbose "The link '$akaMsLink' is not valid: failed to retrieve the redirection location."
-        return $null
-    }
-
-    Say-Verbose "Aka.ms links have redirected more than the maximum allowed redirections. This may be caused by a cyclic redirection of aka.ms links."
-    return $null
-
-}
-
-function Get-AkaMsLink-And-Version([string] $NormalizedChannel, [string] $NormalizedQuality, [bool] $Internal, [string] $ProductName, [string] $Architecture) {
-    $AkaMsDownloadLink = Get-AkaMSDownloadLink -Channel $NormalizedChannel -Quality $NormalizedQuality -Internal $Internal -Product $ProductName -Architecture $Architecture
-   
-    if ([string]::IsNullOrEmpty($AkaMsDownloadLink)){
-        if (-not [string]::IsNullOrEmpty($NormalizedQuality)) {
-            # if quality is specified - exit with error - there is no fallback approach
-            Say-Error "Failed to locate the latest version in the channel '$NormalizedChannel' with '$NormalizedQuality' quality for '$ProductName', os: 'win', architecture: '$Architecture'."
-            Say-Error "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support."
-            throw "aka.ms link resolution failure"
-        }
-        Say-Verbose "Falling back to latest.version file approach."
-        return ($null, $null, $null)
-    }
-    else {
-        Say-Verbose "Retrieved primary named payload URL from aka.ms link: '$AkaMsDownloadLink'."
-        Say-Verbose  "Downloading using legacy url will not be attempted."
-
-        #get version from the path
-        $pathParts = $AkaMsDownloadLink.Split('/')
-        if ($pathParts.Length -ge 2) { 
-            $SpecificVersion = $pathParts[$pathParts.Length - 2]
-            Say-Verbose "Version: '$SpecificVersion'."
-        }
-        else {
-            Say-Error "Failed to extract the version from download link '$AkaMsDownloadLink'."
-            return ($null, $null, $null)
-        }
-
-        #retrieve effective (product) version
-        $EffectiveVersion = Get-Product-Version -SpecificVersion $SpecificVersion -PackageDownloadLink $AkaMsDownloadLink
-        Say-Verbose "Product version: '$EffectiveVersion'."
-
-        return ($AkaMsDownloadLink, $SpecificVersion, $EffectiveVersion);
-    }
-}
-
-function Get-Feeds-To-Use()
-{
-    $feeds = @(
-    "https://dotnetcli.azureedge.net/dotnet",
-    "https://dotnetbuilds.azureedge.net/public"
-    )
-
-    if (-not [string]::IsNullOrEmpty($AzureFeed)) {
-        $feeds = @($AzureFeed)
-    }
-
-    if ($NoCdn) {
-        $feeds = @(
-        "https://dotnetcli.blob.core.windows.net/dotnet",
-        "https://dotnetbuilds.blob.core.windows.net/public"
-        )
-
-        if (-not [string]::IsNullOrEmpty($UncachedFeed)) {
-            $feeds = @($UncachedFeed)
-        }
-    }
-
-    return $feeds
-}
-
-function Resolve-AssetName-And-RelativePath([string] $Runtime) {
-    
-    if ($Runtime -eq "dotnet") {
-        $assetName = ".NET Core Runtime"
-        $dotnetPackageRelativePath = "shared\Microsoft.NETCore.App"
-    }
-    elseif ($Runtime -eq "aspnetcore") {
-        $assetName = "ASP.NET Core Runtime"
-        $dotnetPackageRelativePath = "shared\Microsoft.AspNetCore.App"
-    }
-    elseif ($Runtime -eq "windowsdesktop") {
-        $assetName = ".NET Core Windows Desktop Runtime"
-        $dotnetPackageRelativePath = "shared\Microsoft.WindowsDesktop.App"
-    }
-    elseif (-not $Runtime) {
-        $assetName = ".NET Core SDK"
-        $dotnetPackageRelativePath = "sdk"
-    }
-    else {
-        throw "Invalid value for `$Runtime"
-    }
-
-    return ($assetName, $dotnetPackageRelativePath)
-}
-
-function Prepare-Install-Directory {
-    $diskSpaceWarning = "Failed to check the disk space. Installation will continue, but it may fail if you do not have enough disk space.";
-
-    if ($PSVersionTable.PSVersion.Major -lt 7) {
-        Say-Verbose $diskSpaceWarning
-        return
-    }
-
-    New-Item -ItemType Directory -Force -Path $InstallRoot | Out-Null
-
-    $installDrive = $((Get-Item $InstallRoot -Force).PSDrive.Name);
-    $diskInfo = $null
-    try {
-        $diskInfo = Get-PSDrive -Name $installDrive
-    }
-    catch {
-        Say-Warning $diskSpaceWarning
-    }
-
-    # The check is relevant for PS version >= 7, the result can be irrelevant for older versions. See https://github.com/PowerShell/PowerShell/issues/12442.
-    if ( ($null -ne $diskInfo) -and ($diskInfo.Free / 1MB -le 100)) {
-        throw "There is not enough disk space on drive ${installDrive}:"
-    }
-}
-
-if ($Help)
-{
-    Get-Help $PSCommandPath -Examples
-    exit
-}
-
-Say-Verbose "Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:"
-Say-Verbose "- The SDK needs to be installed without user interaction and without admin rights."
-Say-Verbose "- The SDK installation doesn't need to persist across multiple CI runs."
-Say-Verbose "To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.`r`n"
-
-if ($SharedRuntime -and (-not $Runtime)) {
-    $Runtime = "dotnet"
-}
-
-$OverrideNonVersionedFiles = !$SkipNonVersionedFiles
-
-Measure-Action "Product discovery" {
-    $script:CLIArchitecture = Get-CLIArchitecture-From-Architecture $Architecture
-    $script:NormalizedQuality = Get-NormalizedQuality $Quality
-    Say-Verbose "Normalized quality: '$NormalizedQuality'"
-    $script:NormalizedChannel = Get-NormalizedChannel $Channel
-    Say-Verbose "Normalized channel: '$NormalizedChannel'"
-    $script:NormalizedProduct = Get-NormalizedProduct $Runtime
-    Say-Verbose "Normalized product: '$NormalizedProduct'"
-    $script:FeedCredential = ValidateFeedCredential $FeedCredential
-}
-
-$InstallRoot = Resolve-Installation-Path $InstallDir
-if (-not (Test-User-Write-Access $InstallRoot)) {
-    Say-Error "The current user doesn't have write access to the installation root '$InstallRoot' to install .NET. Please try specifying a different installation directory using the -InstallDir parameter, or ensure the selected directory has the appropriate permissions."
-    throw
-}
-Say-Verbose "InstallRoot: $InstallRoot"
-$ScriptName = $MyInvocation.MyCommand.Name
-($assetName, $dotnetPackageRelativePath) = Resolve-AssetName-And-RelativePath -Runtime $Runtime
-
-$feeds = Get-Feeds-To-Use
-$DownloadLinks = @()
-
-if ($Version.ToLowerInvariant() -ne "latest" -and -not [string]::IsNullOrEmpty($Quality)) {
-    throw "Quality and Version options are not allowed to be specified simultaneously. See https:// learn.microsoft.com/dotnet/core/tools/dotnet-install-script#options for details."
-}
-
-# aka.ms links can only be used if the user did not request a specific version via the command line or a global.json file.
-if ([string]::IsNullOrEmpty($JSonFile) -and ($Version -eq "latest")) {
-    ($DownloadLink, $SpecificVersion, $EffectiveVersion) = Get-AkaMsLink-And-Version $NormalizedChannel $NormalizedQuality $Internal $NormalizedProduct $CLIArchitecture
-    
-    if ($null -ne $DownloadLink) {
-        $DownloadLinks += New-Object PSObject -Property @{downloadLink="$DownloadLink";specificVersion="$SpecificVersion";effectiveVersion="$EffectiveVersion";type='aka.ms'}
-        Say-Verbose "Generated aka.ms link $DownloadLink with version $EffectiveVersion"
-        
-        if (-Not $DryRun) {
-            Say-Verbose "Checking if the version $EffectiveVersion is already installed"
-            if (Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $EffectiveVersion)
-            {
-                Say "$assetName with version '$EffectiveVersion' is already installed."
-                Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot
-                return
-            }
-        }
-    }
-}
-
-# Primary and legacy links cannot be used if a quality was specified.
-# If we already have an aka.ms link, no need to search the blob feeds.
-if ([string]::IsNullOrEmpty($NormalizedQuality) -and 0 -eq $DownloadLinks.count)
-{
-    foreach ($feed in $feeds) {
-        try {
-            $SpecificVersion = Get-Specific-Version-From-Version -AzureFeed $feed -Channel $Channel -Version $Version -JSonFile $JSonFile
-            $DownloadLink, $EffectiveVersion = Get-Download-Link -AzureFeed $feed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
-            $LegacyDownloadLink = Get-LegacyDownload-Link -AzureFeed $feed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
-            
-            $DownloadLinks += New-Object PSObject -Property @{downloadLink="$DownloadLink";specificVersion="$SpecificVersion";effectiveVersion="$EffectiveVersion";type='primary'}
-            Say-Verbose "Generated primary link $DownloadLink with version $EffectiveVersion"
-    
-            if (-not [string]::IsNullOrEmpty($LegacyDownloadLink)) {
-                $DownloadLinks += New-Object PSObject -Property @{downloadLink="$LegacyDownloadLink";specificVersion="$SpecificVersion";effectiveVersion="$EffectiveVersion";type='legacy'}
-                Say-Verbose "Generated legacy link $LegacyDownloadLink with version $EffectiveVersion"
-            }
-    
-            if (-Not $DryRun) {
-                Say-Verbose "Checking if the version $EffectiveVersion is already installed"
-                if (Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $EffectiveVersion)
-                {
-                    Say "$assetName with version '$EffectiveVersion' is already installed."
-                    Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot
-                    return
-                }
-            }
-        }
-        catch
-        {
-            Say-Verbose "Failed to acquire download links from feed $feed. Exception: $_"
-        }
-    }
-}
-
-if ($DownloadLinks.count -eq 0) {
-    throw "Failed to resolve the exact version number."
-}
-
-if ($DryRun) {
-    PrintDryRunOutput $MyInvocation $DownloadLinks
-    return
-}
-
-Measure-Action "Installation directory preparation" { Prepare-Install-Directory }
-
-Say-Verbose "Zip path: $ZipPath"
-
-$DownloadSucceeded = $false
-$DownloadedLink = $null
-$ErrorMessages = @()
-
-foreach ($link in $DownloadLinks)
-{
-    Say-Verbose "Downloading `"$($link.type)`" link $($link.downloadLink)"
-
-    try {
-        Measure-Action "Package download" { DownloadFile -Source $link.downloadLink -OutPath $ZipPath }
-        Say-Verbose "Download succeeded."
-        $DownloadSucceeded = $true
-        $DownloadedLink = $link
-        break
-    }
-    catch {
-        $StatusCode = $null
-        $ErrorMessage = $null
-
-        if ($PSItem.Exception.Data.Contains("StatusCode")) {
-            $StatusCode = $PSItem.Exception.Data["StatusCode"]
-        }
-    
-        if ($PSItem.Exception.Data.Contains("ErrorMessage")) {
-            $ErrorMessage = $PSItem.Exception.Data["ErrorMessage"]
-        } else {
-            $ErrorMessage = $PSItem.Exception.Message
-        }
-
-        Say-Verbose "Download failed with status code $StatusCode. Error message: $ErrorMessage"
-        $ErrorMessages += "Downloading from `"$($link.type)`" link has failed with error:`nUri: $($link.downloadLink)`nStatusCode: $StatusCode`nError: $ErrorMessage"
-    }
-
-    # This link failed. Clean up before trying the next one.
-    SafeRemoveFile -Path $ZipPath
-}
-
-if (-not $DownloadSucceeded) {
-    foreach ($ErrorMessage in $ErrorMessages) {
-        Say-Error $ErrorMessages
-    }
-
-    throw "Could not find `"$assetName`" with version = $($DownloadLinks[0].effectiveVersion)`nRefer to: https://aka.ms/dotnet-os-lifecycle for information on .NET support"
-}
-
-Say "Extracting the archive."
-Measure-Action "Package extraction" { Extract-Dotnet-Package -ZipPath $ZipPath -OutPath $InstallRoot }
-
-#  Check if the SDK version is installed; if not, fail the installation.
-$isAssetInstalled = $false
-
-# if the version contains "RTM" or "servicing"; check if a 'release-type' SDK version is installed.
-if ($DownloadedLink.effectiveVersion -Match "rtm" -or $DownloadedLink.effectiveVersion -Match "servicing") {
-    $ReleaseVersion = $DownloadedLink.effectiveVersion.Split("-")[0]
-    Say-Verbose "Checking installation: version = $ReleaseVersion"
-    $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $ReleaseVersion
-}
-
-#  Check if the SDK version is installed.
-if (!$isAssetInstalled) {
-    Say-Verbose "Checking installation: version = $($DownloadedLink.effectiveVersion)"
-    $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $DownloadedLink.effectiveVersion
-}
-
-# Version verification failed. More likely something is wrong either with the downloaded content or with the verification algorithm.
-if (!$isAssetInstalled) {
-    Say-Error "Failed to verify the version of installed `"$assetName`".`nInstallation source: $($DownloadedLink.downloadLink).`nInstallation location: $InstallRoot.`nReport the bug at https://github.com/dotnet/install-scripts/issues."
-    throw "`"$assetName`" with version = $($DownloadedLink.effectiveVersion) failed to install with an unknown error."
-}
-
-if (-not $KeepZip) {
-    SafeRemoveFile -Path $ZipPath
-}
-
-Measure-Action "Setting up shell environment" { Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot }
-
-Say "Note that the script does not ensure your Windows version is supported during the installation."
-Say "To check the list of supported versions, go to https://learn.microsoft.com/dotnet/core/install/windows#supported-versions"
-Say "Installed version is $($DownloadedLink.effectiveVersion)"
-Say "Installation finished"
-# SIG # Begin signature block
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-# SIG # End signature block
+#
+# Copyright (c) .NET Foundation and contributors. All rights reserved.
+# Licensed under the MIT license. See LICENSE file in the project root for full license information.
+#
+
+<#
+.SYNOPSIS
+    Installs dotnet cli
+.DESCRIPTION
+    Installs dotnet cli. If dotnet installation already exists in the given directory
+    it will update it only if the requested version differs from the one already installed.
+
+    Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:
+    - The SDK needs to be installed without user interaction and without admin rights.
+    - The SDK installation doesn't need to persist across multiple CI runs.
+    To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.
+
+.PARAMETER Channel
+    Default: LTS
+    Download from the Channel specified. Possible values:
+    - STS - the most recent Standard Term Support release
+    - LTS - the most recent Long Term Support release
+    - 2-part version in a format A.B - represents a specific release
+          examples: 2.0, 1.0
+    - 3-part version in a format A.B.Cxx - represents a specific SDK release
+          examples: 5.0.1xx, 5.0.2xx
+          Supported since 5.0 release
+    Warning: Value "Current" is deprecated for the Channel parameter. Use "STS" instead.
+    Note: The version parameter overrides the channel parameter when any version other than 'latest' is used.
+.PARAMETER Quality
+    Download the latest build of specified quality in the channel. The possible values are: daily, signed, validated, preview, GA.
+    Works only in combination with channel. Not applicable for STS and LTS channels and will be ignored if those channels are used. 
+    For SDK use channel in A.B.Cxx format: using quality together with channel in A.B format is not supported.
+    Supported since 5.0 release.
+    Note: The version parameter overrides the channel parameter when any version other than 'latest' is used, and therefore overrides the quality.     
+.PARAMETER Version
+    Default: latest
+    Represents a build version on specific channel. Possible values:
+    - latest - the latest build on specific channel
+    - 3-part version in a format A.B.C - represents specific version of build
+          examples: 2.0.0-preview2-006120, 1.1.0
+.PARAMETER Internal
+    Download internal builds. Requires providing credentials via -FeedCredential parameter.
+.PARAMETER FeedCredential
+    Token to access Azure feed. Used as a query string to append to the Azure feed.
+    This parameter typically is not specified.
+.PARAMETER InstallDir
+    Default: %LocalAppData%\Microsoft\dotnet
+    Path to where to install dotnet. Note that binaries will be placed directly in a given directory.
+.PARAMETER Architecture
+    Default: <auto> - this value represents currently running OS architecture
+    Architecture of dotnet binaries to be installed.
+    Possible values are: <auto>, amd64, x64, x86, arm64, arm
+.PARAMETER SharedRuntime
+    This parameter is obsolete and may be removed in a future version of this script.
+    The recommended alternative is '-Runtime dotnet'.
+    Installs just the shared runtime bits, not the entire SDK.
+.PARAMETER Runtime
+    Installs just a shared runtime, not the entire SDK.
+    Possible values:
+        - dotnet     - the Microsoft.NETCore.App shared runtime
+        - aspnetcore - the Microsoft.AspNetCore.App shared runtime
+        - windowsdesktop - the Microsoft.WindowsDesktop.App shared runtime
+.PARAMETER DryRun
+    If set it will not perform installation but instead display what command line to use to consistently install
+    currently requested version of dotnet cli. In example if you specify version 'latest' it will display a link
+    with specific version so that this command can be used deterministicly in a build script.
+    It also displays binaries location if you prefer to install or download it yourself.
+.PARAMETER NoPath
+    By default this script will set environment variable PATH for the current process to the binaries folder inside installation folder.
+    If set it will display binaries location but not set any environment variable.
+.PARAMETER Verbose
+    Displays diagnostics information.
+.PARAMETER AzureFeed
+    Default: https://dotnetcli.azureedge.net/dotnet
+    For internal use only.
+    Allows using a different storage to download SDK archives from.
+    This parameter is only used if $NoCdn is false.
+.PARAMETER UncachedFeed
+    For internal use only.
+    Allows using a different storage to download SDK archives from.
+    This parameter is only used if $NoCdn is true.
+.PARAMETER ProxyAddress
+    If set, the installer will use the proxy when making web requests
+.PARAMETER ProxyUseDefaultCredentials
+    Default: false
+    Use default credentials, when using proxy address.
+.PARAMETER ProxyBypassList
+    If set with ProxyAddress, will provide the list of comma separated urls that will bypass the proxy
+.PARAMETER SkipNonVersionedFiles
+    Default: false
+    Skips installing non-versioned files if they already exist, such as dotnet.exe.
+.PARAMETER NoCdn
+    Disable downloading from the Azure CDN, and use the uncached feed directly.
+.PARAMETER JSonFile
+    Determines the SDK version from a user specified global.json file
+    Note: global.json must have a value for 'SDK:Version'
+.PARAMETER DownloadTimeout
+    Determines timeout duration in seconds for dowloading of the SDK file
+    Default: 1200 seconds (20 minutes)
+.PARAMETER KeepZip
+    If set, downloaded file is kept
+.PARAMETER ZipPath
+    Use that path to store installer, generated by default
+.EXAMPLE
+    dotnet-install.ps1 -Version 7.0.401
+    Installs the .NET SDK version 7.0.401
+.EXAMPLE
+    dotnet-install.ps1 -Channel 8.0 -Quality GA
+    Installs the latest GA (general availability) version of the .NET 8.0 SDK
+#>
+[cmdletbinding()]
+param(
+    [string]$Channel = "LTS",
+    [string]$Quality,
+    [string]$Version = "Latest",
+    [switch]$Internal,
+    [string]$JSonFile,
+    [Alias('i')][string]$InstallDir = "<auto>",
+    [string]$Architecture = "<auto>",
+    [string]$Runtime,
+    [Obsolete("This parameter may be removed in a future version of this script. The recommended alternative is '-Runtime dotnet'.")]
+    [switch]$SharedRuntime,
+    [switch]$DryRun,
+    [switch]$NoPath,
+    [string]$AzureFeed,
+    [string]$UncachedFeed,
+    [string]$FeedCredential,
+    [string]$ProxyAddress,
+    [switch]$ProxyUseDefaultCredentials,
+    [string[]]$ProxyBypassList = @(),
+    [switch]$SkipNonVersionedFiles,
+    [switch]$NoCdn,
+    [int]$DownloadTimeout = 1200,
+    [switch]$KeepZip,
+    [string]$ZipPath = [System.IO.Path]::combine([System.IO.Path]::GetTempPath(), [System.IO.Path]::GetRandomFileName()),
+    [switch]$Help
+)
+
+Set-StrictMode -Version Latest
+$ErrorActionPreference = "Stop"
+$ProgressPreference = "SilentlyContinue"
+
+function Say($str) {
+    try {
+        Write-Host "dotnet-install: $str"
+    }
+    catch {
+        # Some platforms cannot utilize Write-Host (Azure Functions, for instance). Fall back to Write-Output
+        Write-Output "dotnet-install: $str"
+    }
+}
+
+function Say-Warning($str) {
+    try {
+        Write-Warning "dotnet-install: $str"
+    }
+    catch {
+        # Some platforms cannot utilize Write-Warning (Azure Functions, for instance). Fall back to Write-Output
+        Write-Output "dotnet-install: Warning: $str"
+    }
+}
+
+# Writes a line with error style settings.
+# Use this function to show a human-readable comment along with an exception.
+function Say-Error($str) {
+    try {
+        # Write-Error is quite oververbose for the purpose of the function, let's write one line with error style settings.
+        $Host.UI.WriteErrorLine("dotnet-install: $str")
+    }
+    catch {
+        Write-Output "dotnet-install: Error: $str"
+    }
+}
+
+function Say-Verbose($str) {
+    try {
+        Write-Verbose "dotnet-install: $str"
+    }
+    catch {
+        # Some platforms cannot utilize Write-Verbose (Azure Functions, for instance). Fall back to Write-Output
+        Write-Output "dotnet-install: $str"
+    }
+}
+
+function Measure-Action($name, $block) {
+    $time = Measure-Command $block
+    $totalSeconds = $time.TotalSeconds
+    Say-Verbose "Action '$name' took $totalSeconds seconds"
+}
+
+function Get-Remote-File-Size($zipUri) {
+    try {
+        $response = Invoke-WebRequest -Uri $zipUri -Method Head
+        $fileSize = $response.Headers["Content-Length"]
+        if ((![string]::IsNullOrEmpty($fileSize))) {
+            Say "Remote file $zipUri size is $fileSize bytes."
+        
+            return $fileSize
+        }
+    }
+    catch {
+        Say-Verbose "Content-Length header was not extracted for $zipUri."
+    }
+
+    return $null
+}
+
+function Say-Invocation($Invocation) {
+    $command = $Invocation.MyCommand;
+    $args = (($Invocation.BoundParameters.Keys | foreach { "-$_ `"$($Invocation.BoundParameters[$_])`"" }) -join " ")
+    Say-Verbose "$command $args"
+}
+
+function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [System.Threading.CancellationToken]$cancellationToken = [System.Threading.CancellationToken]::None, [int]$MaxAttempts = 3, [int]$SecondsBetweenAttempts = 1) {
+    $Attempts = 0
+    $local:startTime = $(get-date)
+
+    while ($true) {
+        try {
+            return & $ScriptBlock
+        }
+        catch {
+            $Attempts++
+            if (($Attempts -lt $MaxAttempts) -and -not $cancellationToken.IsCancellationRequested) {
+                Start-Sleep $SecondsBetweenAttempts
+            }
+            else {
+                $local:elapsedTime = $(get-date) - $local:startTime
+                if (($local:elapsedTime.TotalSeconds - $DownloadTimeout) -gt 0 -and -not $cancellationToken.IsCancellationRequested) {
+                    throw New-Object System.TimeoutException("Failed to reach the server: connection timeout: default timeout is $DownloadTimeout second(s)");
+                }
+                throw;
+            }
+        }
+    }
+}
+
+function Get-Machine-Architecture() {
+    Say-Invocation $MyInvocation
+
+    # On PS x86, PROCESSOR_ARCHITECTURE reports x86 even on x64 systems.
+    # To get the correct architecture, we need to use PROCESSOR_ARCHITEW6432.
+    # PS x64 doesn't define this, so we fall back to PROCESSOR_ARCHITECTURE.
+    # Possible values: amd64, x64, x86, arm64, arm
+    if ( $ENV:PROCESSOR_ARCHITEW6432 -ne $null ) {
+        return $ENV:PROCESSOR_ARCHITEW6432
+    }
+
+    try {        
+        if ( ((Get-CimInstance -ClassName CIM_OperatingSystem).OSArchitecture) -like "ARM*") {
+            if ( [Environment]::Is64BitOperatingSystem ) {
+                return "arm64"
+            }  
+            return "arm"
+        }
+    }
+    catch {
+        # Machine doesn't support Get-CimInstance
+    }
+
+    return $ENV:PROCESSOR_ARCHITECTURE
+}
+
+function Get-CLIArchitecture-From-Architecture([string]$Architecture) {
+    Say-Invocation $MyInvocation
+
+    if ($Architecture -eq "<auto>") {
+        $Architecture = Get-Machine-Architecture
+    }
+
+    switch ($Architecture.ToLowerInvariant()) {
+        { ($_ -eq "amd64") -or ($_ -eq "x64") } { return "x64" }
+        { $_ -eq "x86" } { return "x86" }
+        { $_ -eq "arm" } { return "arm" }
+        { $_ -eq "arm64" } { return "arm64" }
+        default { throw "Architecture '$Architecture' not supported. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues" }
+    }
+}
+
+function ValidateFeedCredential([string] $FeedCredential) {
+    if ($Internal -and [string]::IsNullOrWhitespace($FeedCredential)) {
+        $message = "Provide credentials via -FeedCredential parameter."
+        if ($DryRun) {
+            Say-Warning "$message"
+        }
+        else {
+            throw "$message"
+        }
+    }
+    
+    #FeedCredential should start with "?", for it to be added to the end of the link.
+    #adding "?" at the beginning of the FeedCredential if needed.
+    if ((![string]::IsNullOrWhitespace($FeedCredential)) -and ($FeedCredential[0] -ne '?')) {
+        $FeedCredential = "?" + $FeedCredential
+    }
+
+    return $FeedCredential
+}
+function Get-NormalizedQuality([string]$Quality) {
+    Say-Invocation $MyInvocation
+
+    if ([string]::IsNullOrEmpty($Quality)) {
+        return ""
+    }
+
+    switch ($Quality) {
+        { @("daily", "signed", "validated", "preview") -contains $_ } { return $Quality.ToLowerInvariant() }
+        #ga quality is available without specifying quality, so normalizing it to empty
+        { $_ -eq "ga" } { return "" }
+        default { throw "'$Quality' is not a supported value for -Quality option. Supported values are: daily, signed, validated, preview, ga. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues." }
+    }
+}
+
+function Get-NormalizedChannel([string]$Channel) {
+    Say-Invocation $MyInvocation
+
+    if ([string]::IsNullOrEmpty($Channel)) {
+        return ""
+    }
+
+    if ($Channel.Contains("Current")) {
+        Say-Warning 'Value "Current" is deprecated for -Channel option. Use "STS" instead.'
+    }
+
+    if ($Channel.StartsWith('release/')) {
+        Say-Warning 'Using branch name with -Channel option is no longer supported with newer releases. Use -Quality option with a channel in X.Y format instead, such as "-Channel 5.0 -Quality Daily."'
+    }
+
+    switch ($Channel) {
+        { $_ -eq "lts" } { return "LTS" }
+        { $_ -eq "sts" } { return "STS" }
+        { $_ -eq "current" } { return "STS" }
+        default { return $Channel.ToLowerInvariant() }
+    }
+}
+
+function Get-NormalizedProduct([string]$Runtime) {
+    Say-Invocation $MyInvocation
+
+    switch ($Runtime) {
+        { $_ -eq "dotnet" } { return "dotnet-runtime" }
+        { $_ -eq "aspnetcore" } { return "aspnetcore-runtime" }
+        { $_ -eq "windowsdesktop" } { return "windowsdesktop-runtime" }
+        { [string]::IsNullOrEmpty($_) } { return "dotnet-sdk" }
+        default { throw "'$Runtime' is not a supported value for -Runtime option, supported values are: dotnet, aspnetcore, windowsdesktop. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues." }
+    }
+}
+
+
+# The version text returned from the feeds is a 1-line or 2-line string:
+# For the SDK and the dotnet runtime (2 lines):
+# Line 1: # commit_hash
+# Line 2: # 4-part version
+# For the aspnetcore runtime (1 line):
+# Line 1: # 4-part version
+function Get-Version-From-LatestVersion-File-Content([string]$VersionText) {
+    Say-Invocation $MyInvocation
+
+    $Data = -split $VersionText
+
+    $VersionInfo = @{
+        CommitHash = $(if ($Data.Count -gt 1) { $Data[0] })
+        Version    = $Data[-1] # last line is always the version number.
+    }
+    return $VersionInfo
+}
+
+function Load-Assembly([string] $Assembly) {
+    try {
+        Add-Type -Assembly $Assembly | Out-Null
+    }
+    catch {
+        # On Nano Server, Powershell Core Edition is used.  Add-Type is unable to resolve base class assemblies because they are not GAC'd.
+        # Loading the base class assemblies is not unnecessary as the types will automatically get resolved.
+    }
+}
+
+function GetHTTPResponse([Uri] $Uri, [bool]$HeaderOnly, [bool]$DisableRedirect, [bool]$DisableFeedCredential) {
+    $cts = New-Object System.Threading.CancellationTokenSource
+
+    $downloadScript = {
+
+        $HttpClient = $null
+
+        try {
+            # HttpClient is used vs Invoke-WebRequest in order to support Nano Server which doesn't support the Invoke-WebRequest cmdlet.
+            Load-Assembly -Assembly System.Net.Http
+
+            if (-not $ProxyAddress) {
+                try {
+                    # Despite no proxy being explicitly specified, we may still be behind a default proxy
+                    $DefaultProxy = [System.Net.WebRequest]::DefaultWebProxy;
+                    if ($DefaultProxy -and (-not $DefaultProxy.IsBypassed($Uri))) {
+                        if ($null -ne $DefaultProxy.GetProxy($Uri)) {
+                            $ProxyAddress = $DefaultProxy.GetProxy($Uri).OriginalString
+                        }
+                        else {
+                            $ProxyAddress = $null
+                        }
+                        $ProxyUseDefaultCredentials = $true
+                    }
+                }
+                catch {
+                    # Eat the exception and move forward as the above code is an attempt
+                    #    at resolving the DefaultProxy that may not have been a problem.
+                    $ProxyAddress = $null
+                    Say-Verbose("Exception ignored: $_.Exception.Message - moving forward...")
+                }
+            }
+
+            $HttpClientHandler = New-Object System.Net.Http.HttpClientHandler
+            if ($ProxyAddress) {
+                $HttpClientHandler.Proxy = New-Object System.Net.WebProxy -Property @{
+                    Address               = $ProxyAddress;
+                    UseDefaultCredentials = $ProxyUseDefaultCredentials;
+                    BypassList            = $ProxyBypassList;
+                }
+            }       
+            if ($DisableRedirect) {
+                $HttpClientHandler.AllowAutoRedirect = $false
+            }
+            $HttpClient = New-Object System.Net.Http.HttpClient -ArgumentList $HttpClientHandler
+
+            # Default timeout for HttpClient is 100s.  For a 50 MB download this assumes 500 KB/s average, any less will time out
+            # Defaulting to 20 minutes allows it to work over much slower connections.
+            $HttpClient.Timeout = New-TimeSpan -Seconds $DownloadTimeout
+
+            if ($HeaderOnly) {
+                $completionOption = [System.Net.Http.HttpCompletionOption]::ResponseHeadersRead
+            }
+            else {
+                $completionOption = [System.Net.Http.HttpCompletionOption]::ResponseContentRead
+            }
+
+            if ($DisableFeedCredential) {
+                $UriWithCredential = $Uri
+            }
+            else {
+                $UriWithCredential = "${Uri}${FeedCredential}"
+            }
+
+            $Task = $HttpClient.GetAsync("$UriWithCredential", $completionOption).ConfigureAwait("false");
+            $Response = $Task.GetAwaiter().GetResult();
+
+            if (($null -eq $Response) -or ((-not $HeaderOnly) -and (-not ($Response.IsSuccessStatusCode)))) {
+                # The feed credential is potentially sensitive info. Do not log FeedCredential to console output.
+                $DownloadException = [System.Exception] "Unable to download $Uri."
+
+                if ($null -ne $Response) {
+                    $DownloadException.Data["StatusCode"] = [int] $Response.StatusCode
+                    $DownloadException.Data["ErrorMessage"] = "Unable to download $Uri. Returned HTTP status code: " + $DownloadException.Data["StatusCode"]
+
+                    if (404 -eq [int] $Response.StatusCode) {
+                        $cts.Cancel()
+                    }
+                }
+
+                throw $DownloadException
+            }
+
+            return $Response
+        }
+        catch [System.Net.Http.HttpRequestException] {
+            $DownloadException = [System.Exception] "Unable to download $Uri."
+
+            # Pick up the exception message and inner exceptions' messages if they exist
+            $CurrentException = $PSItem.Exception
+            $ErrorMsg = $CurrentException.Message + "`r`n"
+            while ($CurrentException.InnerException) {
+                $CurrentException = $CurrentException.InnerException
+                $ErrorMsg += $CurrentException.Message + "`r`n"
+            }
+
+            # Check if there is an issue concerning TLS.
+            if ($ErrorMsg -like "*SSL/TLS*") {
+                $ErrorMsg += "Ensure that TLS 1.2 or higher is enabled to use this script.`r`n"
+            }
+
+            $DownloadException.Data["ErrorMessage"] = $ErrorMsg
+            throw $DownloadException
+        }
+        finally {
+            if ($null -ne $HttpClient) {
+                $HttpClient.Dispose()
+            }
+        }
+    }
+
+    try {
+        return Invoke-With-Retry $downloadScript $cts.Token
+    }
+    finally {
+        if ($null -ne $cts) {
+            $cts.Dispose()
+        }
+    }
+}
+
+function Get-Version-From-LatestVersion-File([string]$AzureFeed, [string]$Channel) {
+    Say-Invocation $MyInvocation
+
+    $VersionFileUrl = $null
+    if ($Runtime -eq "dotnet") {
+        $VersionFileUrl = "$AzureFeed/Runtime/$Channel/latest.version"
+    }
+    elseif ($Runtime -eq "aspnetcore") {
+        $VersionFileUrl = "$AzureFeed/aspnetcore/Runtime/$Channel/latest.version"
+    }
+    elseif ($Runtime -eq "windowsdesktop") {
+        $VersionFileUrl = "$AzureFeed/WindowsDesktop/$Channel/latest.version"
+    }
+    elseif (-not $Runtime) {
+        $VersionFileUrl = "$AzureFeed/Sdk/$Channel/latest.version"
+    }
+    else {
+        throw "Invalid value for `$Runtime"
+    }
+
+    Say-Verbose "Constructed latest.version URL: $VersionFileUrl"
+
+    try {
+        $Response = GetHTTPResponse -Uri $VersionFileUrl
+    }
+    catch {
+        Say-Verbose "Failed to download latest.version file."
+        throw
+    }
+    $StringContent = $Response.Content.ReadAsStringAsync().Result
+
+    switch ($Response.Content.Headers.ContentType) {
+        { ($_ -eq "application/octet-stream") } { $VersionText = $StringContent }
+        { ($_ -eq "text/plain") } { $VersionText = $StringContent }
+        { ($_ -eq "text/plain; charset=UTF-8") } { $VersionText = $StringContent }
+        default { throw "``$Response.Content.Headers.ContentType`` is an unknown .version file content type." }
+    }
+
+    $VersionInfo = Get-Version-From-LatestVersion-File-Content $VersionText
+
+    return $VersionInfo
+}
+
+function Parse-Jsonfile-For-Version([string]$JSonFile) {
+    Say-Invocation $MyInvocation
+
+    If (-Not (Test-Path $JSonFile)) {
+        throw "Unable to find '$JSonFile'"
+    }
+    try {
+        $JSonContent = Get-Content($JSonFile) -Raw | ConvertFrom-Json | Select-Object -expand "sdk" -ErrorAction SilentlyContinue
+    }
+    catch {
+        Say-Error "Json file unreadable: '$JSonFile'"
+        throw
+    }
+    if ($JSonContent) {
+        try {
+            $JSonContent.PSObject.Properties | ForEach-Object {
+                $PropertyName = $_.Name
+                if ($PropertyName -eq "version") {
+                    $Version = $_.Value
+                    Say-Verbose "Version = $Version"
+                }
+            }
+        }
+        catch {
+            Say-Error "Unable to parse the SDK node in '$JSonFile'"
+            throw
+        }
+    }
+    else {
+        throw "Unable to find the SDK node in '$JSonFile'"
+    }
+    If ($Version -eq $null) {
+        throw "Unable to find the SDK:version node in '$JSonFile'"
+    }
+    return $Version
+}
+
+function Get-Specific-Version-From-Version([string]$AzureFeed, [string]$Channel, [string]$Version, [string]$JSonFile) {
+    Say-Invocation $MyInvocation
+
+    if (-not $JSonFile) {
+        if ($Version.ToLowerInvariant() -eq "latest") {
+            $LatestVersionInfo = Get-Version-From-LatestVersion-File -AzureFeed $AzureFeed -Channel $Channel
+            return $LatestVersionInfo.Version
+        }
+        else {
+            return $Version 
+        }
+    }
+    else {
+        return Parse-Jsonfile-For-Version $JSonFile
+    }
+}
+
+function Get-Download-Link([string]$AzureFeed, [string]$SpecificVersion, [string]$CLIArchitecture) {
+    Say-Invocation $MyInvocation
+
+    # If anything fails in this lookup it will default to $SpecificVersion
+    $SpecificProductVersion = Get-Product-Version -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion
+
+    if ($Runtime -eq "dotnet") {
+        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/dotnet-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
+    }
+    elseif ($Runtime -eq "aspnetcore") {
+        $PayloadURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/aspnetcore-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
+    }
+    elseif ($Runtime -eq "windowsdesktop") {
+        # The windows desktop runtime is part of the core runtime layout prior to 5.0
+        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/windowsdesktop-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
+        if ($SpecificVersion -match '^(\d+)\.(.*)$') {
+            $majorVersion = [int]$Matches[1]
+            if ($majorVersion -ge 5) {
+                $PayloadURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/windowsdesktop-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
+            }
+        }
+    }
+    elseif (-not $Runtime) {
+        $PayloadURL = "$AzureFeed/Sdk/$SpecificVersion/dotnet-sdk-$SpecificProductVersion-win-$CLIArchitecture.zip"
+    }
+    else {
+        throw "Invalid value for `$Runtime"
+    }
+
+    Say-Verbose "Constructed primary named payload URL: $PayloadURL"
+
+    return $PayloadURL, $SpecificProductVersion
+}
+
+function Get-LegacyDownload-Link([string]$AzureFeed, [string]$SpecificVersion, [string]$CLIArchitecture) {
+    Say-Invocation $MyInvocation
+
+    if (-not $Runtime) {
+        $PayloadURL = "$AzureFeed/Sdk/$SpecificVersion/dotnet-dev-win-$CLIArchitecture.$SpecificVersion.zip"
+    }
+    elseif ($Runtime -eq "dotnet") {
+        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/dotnet-win-$CLIArchitecture.$SpecificVersion.zip"
+    }
+    else {
+        return $null
+    }
+
+    Say-Verbose "Constructed legacy named payload URL: $PayloadURL"
+
+    return $PayloadURL
+}
+
+function Get-Product-Version([string]$AzureFeed, [string]$SpecificVersion, [string]$PackageDownloadLink) {
+    Say-Invocation $MyInvocation
+
+    # Try to get the version number, using the productVersion.txt file located next to the installer file.
+    $ProductVersionTxtURLs = (Get-Product-Version-Url $AzureFeed $SpecificVersion $PackageDownloadLink -Flattened $true),
+                             (Get-Product-Version-Url $AzureFeed $SpecificVersion $PackageDownloadLink -Flattened $false)
+    
+    Foreach ($ProductVersionTxtURL in $ProductVersionTxtURLs) {
+        Say-Verbose "Checking for the existence of $ProductVersionTxtURL"
+
+        try {
+            $productVersionResponse = GetHTTPResponse($productVersionTxtUrl)
+
+            if ($productVersionResponse.StatusCode -eq 200) {
+                $productVersion = $productVersionResponse.Content.ReadAsStringAsync().Result.Trim()
+                if ($productVersion -ne $SpecificVersion) {
+                    Say "Using alternate version $productVersion found in $ProductVersionTxtURL"
+                }
+                return $productVersion
+            }
+            else {
+                Say-Verbose "Got StatusCode $($productVersionResponse.StatusCode) when trying to get productVersion.txt at $productVersionTxtUrl."
+            }
+        } 
+        catch {
+            Say-Verbose "Could not read productVersion.txt at $productVersionTxtUrl (Exception: '$($_.Exception.Message)'. )"
+        }
+    }
+
+    # Getting the version number with productVersion.txt has failed. Try parsing the download link for a version number.
+    if ([string]::IsNullOrEmpty($PackageDownloadLink)) {
+        Say-Verbose "Using the default value '$SpecificVersion' as the product version."
+        return $SpecificVersion
+    }
+
+    $productVersion = Get-ProductVersionFromDownloadLink $PackageDownloadLink $SpecificVersion
+    return $productVersion
+}
+
+function Get-Product-Version-Url([string]$AzureFeed, [string]$SpecificVersion, [string]$PackageDownloadLink, [bool]$Flattened) {
+    Say-Invocation $MyInvocation
+
+    $majorVersion = $null
+    if ($SpecificVersion -match '^(\d+)\.(.*)') {
+        $majorVersion = $Matches[1] -as [int]
+    }
+
+    $pvFileName = 'productVersion.txt'
+    if ($Flattened) {
+        if (-not $Runtime) {
+            $pvFileName = 'sdk-productVersion.txt'
+        }
+        elseif ($Runtime -eq "dotnet") {
+            $pvFileName = 'runtime-productVersion.txt'
+        }
+        else {
+            $pvFileName = "$Runtime-productVersion.txt"
+        }
+    }
+
+    if ([string]::IsNullOrEmpty($PackageDownloadLink)) {
+        if ($Runtime -eq "dotnet") {
+            $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/$pvFileName"
+        }
+        elseif ($Runtime -eq "aspnetcore") {
+            $ProductVersionTxtURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/$pvFileName"
+        }
+        elseif ($Runtime -eq "windowsdesktop") {
+            # The windows desktop runtime is part of the core runtime layout prior to 5.0
+            $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/$pvFileName"
+            if ($majorVersion -ne $null -and $majorVersion -ge 5) {
+                $ProductVersionTxtURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/$pvFileName"
+            }
+        }
+        elseif (-not $Runtime) {
+            $ProductVersionTxtURL = "$AzureFeed/Sdk/$SpecificVersion/$pvFileName"
+        }
+        else {
+            throw "Invalid value '$Runtime' specified for `$Runtime"
+        }
+    }
+    else {
+        $ProductVersionTxtURL = $PackageDownloadLink.Substring(0, $PackageDownloadLink.LastIndexOf("/")) + "/$pvFileName"
+    }
+
+    Say-Verbose "Constructed productVersion link: $ProductVersionTxtURL"
+
+    return $ProductVersionTxtURL
+}
+
+function Get-ProductVersionFromDownloadLink([string]$PackageDownloadLink, [string]$SpecificVersion) {
+    Say-Invocation $MyInvocation
+
+    #product specific version follows the product name
+    #for filename 'dotnet-sdk-3.1.404-win-x64.zip': the product version is 3.1.400
+    $filename = $PackageDownloadLink.Substring($PackageDownloadLink.LastIndexOf("/") + 1)
+    $filenameParts = $filename.Split('-')
+    if ($filenameParts.Length -gt 2) {
+        $productVersion = $filenameParts[2]
+        Say-Verbose "Extracted product version '$productVersion' from download link '$PackageDownloadLink'."
+    }
+    else {
+        Say-Verbose "Using the default value '$SpecificVersion' as the product version."
+        $productVersion = $SpecificVersion
+    }
+    return $productVersion 
+}
+
+function Get-User-Share-Path() {
+    Say-Invocation $MyInvocation
+
+    $InstallRoot = $env:DOTNET_INSTALL_DIR
+    if (!$InstallRoot) {
+        $InstallRoot = "$env:LocalAppData\Microsoft\dotnet"
+    }
+    elseif ($InstallRoot -like "$env:ProgramFiles\dotnet\?*") {
+        Say-Warning "The install root specified by the environment variable DOTNET_INSTALL_DIR points to the sub folder of $env:ProgramFiles\dotnet which is the default dotnet install root using .NET SDK installer. It is better to keep aligned with .NET SDK installer."
+    }
+    return $InstallRoot
+}
+
+function Resolve-Installation-Path([string]$InstallDir) {
+    Say-Invocation $MyInvocation
+
+    if ($InstallDir -eq "<auto>") {
+        return Get-User-Share-Path
+    }
+    return $InstallDir
+}
+
+function Test-User-Write-Access([string]$InstallDir) {
+    try {
+        $tempFileName = [guid]::NewGuid().ToString()
+        $tempFilePath = Join-Path -Path $InstallDir -ChildPath $tempFileName
+        New-Item -Path $tempFilePath -ItemType File -Force
+        Remove-Item $tempFilePath -Force
+        return $true
+    }
+    catch {
+        return $false
+    }
+}
+
+function Is-Dotnet-Package-Installed([string]$InstallRoot, [string]$RelativePathToPackage, [string]$SpecificVersion) {
+    Say-Invocation $MyInvocation
+
+    $DotnetPackagePath = Join-Path -Path $InstallRoot -ChildPath $RelativePathToPackage | Join-Path -ChildPath $SpecificVersion
+    Say-Verbose "Is-Dotnet-Package-Installed: DotnetPackagePath=$DotnetPackagePath"
+    return Test-Path $DotnetPackagePath -PathType Container
+}
+
+function Get-Absolute-Path([string]$RelativeOrAbsolutePath) {
+    # Too much spam
+    # Say-Invocation $MyInvocation
+
+    return $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($RelativeOrAbsolutePath)
+}
+
+function Get-Path-Prefix-With-Version($path) {
+    # example path with regex: shared/1.0.0-beta-12345/somepath
+    $match = [regex]::match($path, "/\d+\.\d+[^/]+/")
+    if ($match.Success) {
+        return $entry.FullName.Substring(0, $match.Index + $match.Length)
+    }
+
+    return $null
+}
+
+function Get-List-Of-Directories-And-Versions-To-Unpack-From-Dotnet-Package([System.IO.Compression.ZipArchive]$Zip, [string]$OutPath) {
+    Say-Invocation $MyInvocation
+
+    $ret = @()
+    foreach ($entry in $Zip.Entries) {
+        $dir = Get-Path-Prefix-With-Version $entry.FullName
+        if ($null -ne $dir) {
+            $path = Get-Absolute-Path $(Join-Path -Path $OutPath -ChildPath $dir)
+            if (-Not (Test-Path $path -PathType Container)) {
+                $ret += $dir
+            }
+        }
+    }
+
+    $ret = $ret | Sort-Object | Get-Unique
+
+    $values = ($ret | foreach { "$_" }) -join ";"
+    Say-Verbose "Directories to unpack: $values"
+
+    return $ret
+}
+
+# Example zip content and extraction algorithm:
+# Rule: files if extracted are always being extracted to the same relative path locally
+# .\
+#       a.exe   # file does not exist locally, extract
+#       b.dll   # file exists locally, override only if $OverrideFiles set
+#       aaa\    # same rules as for files
+#           ...
+#       abc\1.0.0\  # directory contains version and exists locally
+#           ...     # do not extract content under versioned part
+#       abc\asd\    # same rules as for files
+#            ...
+#       def\ghi\1.0.1\  # directory contains version and does not exist locally
+#           ...         # extract content
+function Extract-Dotnet-Package([string]$ZipPath, [string]$OutPath) {
+    Say-Invocation $MyInvocation
+
+    Load-Assembly -Assembly System.IO.Compression.FileSystem
+    Set-Variable -Name Zip
+    try {
+        $Zip = [System.IO.Compression.ZipFile]::OpenRead($ZipPath)
+
+        $DirectoriesToUnpack = Get-List-Of-Directories-And-Versions-To-Unpack-From-Dotnet-Package -Zip $Zip -OutPath $OutPath
+
+        foreach ($entry in $Zip.Entries) {
+            $PathWithVersion = Get-Path-Prefix-With-Version $entry.FullName
+            if (($null -eq $PathWithVersion) -Or ($DirectoriesToUnpack -contains $PathWithVersion)) {
+                $DestinationPath = Get-Absolute-Path $(Join-Path -Path $OutPath -ChildPath $entry.FullName)
+                $DestinationDir = Split-Path -Parent $DestinationPath
+                $OverrideFiles = $OverrideNonVersionedFiles -Or (-Not (Test-Path $DestinationPath))
+                if ((-Not $DestinationPath.EndsWith("\")) -And $OverrideFiles) {
+                    New-Item -ItemType Directory -Force -Path $DestinationDir | Out-Null
+                    [System.IO.Compression.ZipFileExtensions]::ExtractToFile($entry, $DestinationPath, $OverrideNonVersionedFiles)
+                }
+            }
+        }
+    }
+    catch {
+        Say-Error "Failed to extract package. Exception: $_"
+        throw;
+    }
+    finally {
+        if ($null -ne $Zip) {
+            $Zip.Dispose()
+        }
+    }
+}
+
+function DownloadFile($Source, [string]$OutPath) {
+    if ($Source -notlike "http*") {
+        #  Using System.IO.Path.GetFullPath to get the current directory
+        #    does not work in this context - $pwd gives the current directory
+        if (![System.IO.Path]::IsPathRooted($Source)) {
+            $Source = $(Join-Path -Path $pwd -ChildPath $Source)
+        }
+        $Source = Get-Absolute-Path $Source
+        Say "Copying file from $Source to $OutPath"
+        Copy-Item $Source $OutPath
+        return
+    }
+
+    $Stream = $null
+    
+    try {
+        $Response = GetHTTPResponse -Uri $Source
+        $Stream = $Response.Content.ReadAsStreamAsync().Result
+        $File = [System.IO.File]::Create($OutPath)
+        $Stream.CopyTo($File)
+        $File.Close()
+
+        ValidateRemoteLocalFileSizes -LocalFileOutPath $OutPath -SourceUri $Source
+    }
+    finally {
+        if ($null -ne $Stream) {
+            $Stream.Dispose()
+        }
+    }
+}
+
+function ValidateRemoteLocalFileSizes([string]$LocalFileOutPath, $SourceUri) {
+    try {
+        $remoteFileSize = Get-Remote-File-Size -zipUri $SourceUri
+        $fileSize = [long](Get-Item $LocalFileOutPath).Length
+        Say "Downloaded file $SourceUri size is $fileSize bytes."
+    
+        if ((![string]::IsNullOrEmpty($remoteFileSize)) -and !([string]::IsNullOrEmpty($fileSize)) ) {
+            if ($remoteFileSize -ne $fileSize) {
+                Say "The remote and local file sizes are not equal. Remote file size is $remoteFileSize bytes and local size is $fileSize bytes. The local package may be corrupted."
+            }
+            else {
+                Say "The remote and local file sizes are equal."
+            }   
+        }
+        else {
+            Say "Either downloaded or local package size can not be measured. One of them may be corrupted."
+        }
+    }
+    catch {
+        Say "Either downloaded or local package size can not be measured. One of them may be corrupted."
+    }
+}
+
+function SafeRemoveFile($Path) {
+    try {
+        if (Test-Path $Path) {
+            Remove-Item $Path
+            Say-Verbose "The temporary file `"$Path`" was removed."
+        }
+        else {
+            Say-Verbose "The temporary file `"$Path`" does not exist, therefore is not removed."
+        }
+    }
+    catch {
+        Say-Warning "Failed to remove the temporary file: `"$Path`", remove it manually."
+    }
+}
+
+function Prepend-Sdk-InstallRoot-To-Path([string]$InstallRoot) {
+    $BinPath = Get-Absolute-Path $(Join-Path -Path $InstallRoot -ChildPath "")
+    if (-Not $NoPath) {
+        $SuffixedBinPath = "$BinPath;"
+        if (-Not $env:path.Contains($SuffixedBinPath)) {
+            Say "Adding to current process PATH: `"$BinPath`". Note: This change will not be visible if PowerShell was run as a child process."
+            $env:path = $SuffixedBinPath + $env:path
+        }
+        else {
+            Say-Verbose "Current process PATH already contains `"$BinPath`""
+        }
+    }
+    else {
+        Say "Binaries of dotnet can be found in $BinPath"
+    }
+}
+
+function PrintDryRunOutput($Invocation, $DownloadLinks) {
+    Say "Payload URLs:"
+    
+    for ($linkIndex = 0; $linkIndex -lt $DownloadLinks.count; $linkIndex++) {
+        Say "URL #$linkIndex - $($DownloadLinks[$linkIndex].type): $($DownloadLinks[$linkIndex].downloadLink)"
+    }
+    $RepeatableCommand = ".\$ScriptName -Version `"$SpecificVersion`" -InstallDir `"$InstallRoot`" -Architecture `"$CLIArchitecture`""
+    if ($Runtime -eq "dotnet") {
+        $RepeatableCommand += " -Runtime `"dotnet`""
+    }
+    elseif ($Runtime -eq "aspnetcore") {
+        $RepeatableCommand += " -Runtime `"aspnetcore`""
+    }
+
+    foreach ($key in $Invocation.BoundParameters.Keys) {
+        if (-not (@("Architecture", "Channel", "DryRun", "InstallDir", "Runtime", "SharedRuntime", "Version", "Quality", "FeedCredential") -contains $key)) {
+            $RepeatableCommand += " -$key `"$($Invocation.BoundParameters[$key])`""
+        }
+    }
+    if ($Invocation.BoundParameters.Keys -contains "FeedCredential") {
+        $RepeatableCommand += " -FeedCredential `"<feedCredential>`""
+    }
+    Say "Repeatable invocation: $RepeatableCommand"
+    if ($SpecificVersion -ne $EffectiveVersion) {
+        Say "NOTE: Due to finding a version manifest with this runtime, it would actually install with version '$EffectiveVersion'"
+    }
+}
+
+# grab the 'stem' of the redirect and check it against all of our configured feeds, 
+# if it matches, we can be sure that the redirect is valid and we should use it for
+# subsequent processing
+function Sanitize-RedirectUrl([string]$url) {
+    $urlSegments = ([System.Uri]$url).Segments;
+    $urlStem = $urlSegments[2..($urlSegments.Length - 1)] -join "";
+    Write-Verbose "Checking configured feeds for the asset at $urlStem"
+    foreach ($prospectiveFeed in $feeds) {
+        $trialUrl = "$prospectiveFeed/$urlStem";
+        Write-Verbose "Checking $trialUrl"
+        try {
+            $trialResponse = Invoke-WebRequest -Uri $trialUrl -Method HEAD
+            if ($trialResponse.StatusCode -eq 200) {
+                Write-Verbose "Found a match at $trialUrl"
+                return $trialUrl;
+            }
+            else {
+                Write-Verbose "No match at $trialUrl"
+            }
+        }
+        catch {
+            Write-Verbose "Failed to check $trialUrl"
+        }
+    }
+}
+
+function Get-AkaMSDownloadLink([string]$Channel, [string]$Quality, [bool]$Internal, [string]$Product, [string]$Architecture) {
+    Say-Invocation $MyInvocation 
+
+    #quality is not supported for LTS or STS channel
+    if (![string]::IsNullOrEmpty($Quality) -and (@("LTS", "STS") -contains $Channel)) {
+        $Quality = ""
+        Say-Warning "Specifying quality for STS or LTS channel is not supported, the quality will be ignored."
+    }
+    Say-Verbose "Retrieving primary payload URL from aka.ms link for channel: '$Channel', quality: '$Quality' product: '$Product', os: 'win', architecture: '$Architecture'." 
+   
+    #construct aka.ms link
+    $akaMsLink = "https://aka.ms/dotnet"
+    if ($Internal) {
+        $akaMsLink += "/internal"
+    }
+    $akaMsLink += "/$Channel"
+    if (-not [string]::IsNullOrEmpty($Quality)) {
+        $akaMsLink += "/$Quality"
+    }
+    $akaMsLink += "/$Product-win-$Architecture.zip"
+    Say-Verbose  "Constructed aka.ms link: '$akaMsLink'."
+    $akaMsDownloadLink = $null
+
+    for ($maxRedirections = 9; $maxRedirections -ge 0; $maxRedirections--) {
+        #get HTTP response
+        #do not pass credentials as a part of the $akaMsLink and do not apply credentials in the GetHTTPResponse function
+        #otherwise the redirect link would have credentials as well
+        #it would result in applying credentials twice to the resulting link and thus breaking it, and in echoing credentials to the output as a part of redirect link
+        $Response = GetHTTPResponse -Uri $akaMsLink -HeaderOnly $true -DisableRedirect $true -DisableFeedCredential $true
+        Say-Verbose "Received response:`n$Response"
+
+        if ([string]::IsNullOrEmpty($Response)) {
+            Say-Verbose "The link '$akaMsLink' is not valid: failed to get redirect location. The resource is not available."
+            return $null
+        }
+
+        #if HTTP code is 301 (Moved Permanently), the redirect link exists
+        if ($Response.StatusCode -eq 301) {
+            try {
+                $akaMsDownloadLink = $Response.Headers.GetValues("Location")[0]
+
+                if ([string]::IsNullOrEmpty($akaMsDownloadLink)) {
+                    Say-Verbose "The link '$akaMsLink' is not valid: server returned 301 (Moved Permanently), but the headers do not contain the redirect location."
+                    return $null
+                }
+
+                Say-Verbose "The redirect location retrieved: '$akaMsDownloadLink'."
+                # This may yet be a link to another redirection. Attempt to retrieve the page again.
+                $akaMsLink = $akaMsDownloadLink
+                continue
+            }
+            catch {
+                Say-Verbose "The link '$akaMsLink' is not valid: failed to get redirect location."
+                return $null
+            }
+        }
+        elseif ((($Response.StatusCode -lt 300) -or ($Response.StatusCode -ge 400)) -and (-not [string]::IsNullOrEmpty($akaMsDownloadLink))) {
+            # Redirections have ended.
+            $actualRedirectUrl = Sanitize-RedirectUrl $akaMsDownloadLink
+            if ($null -ne $actualRedirectUrl) {
+                $akaMsDownloadLink = $actualRedirectUrl
+            }
+
+            return $akaMsDownloadLink
+        }
+
+        Say-Verbose "The link '$akaMsLink' is not valid: failed to retrieve the redirection location."
+        return $null
+    }
+
+    Say-Verbose "Aka.ms links have redirected more than the maximum allowed redirections. This may be caused by a cyclic redirection of aka.ms links."
+    return $null
+
+}
+
+function Get-AkaMsLink-And-Version([string] $NormalizedChannel, [string] $NormalizedQuality, [bool] $Internal, [string] $ProductName, [string] $Architecture) {
+    $AkaMsDownloadLink = Get-AkaMSDownloadLink -Channel $NormalizedChannel -Quality $NormalizedQuality -Internal $Internal -Product $ProductName -Architecture $Architecture
+   
+    if ([string]::IsNullOrEmpty($AkaMsDownloadLink)) {
+        if (-not [string]::IsNullOrEmpty($NormalizedQuality)) {
+            # if quality is specified - exit with error - there is no fallback approach
+            Say-Error "Failed to locate the latest version in the channel '$NormalizedChannel' with '$NormalizedQuality' quality for '$ProductName', os: 'win', architecture: '$Architecture'."
+            Say-Error "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support."
+            throw "aka.ms link resolution failure"
+        }
+        Say-Verbose "Falling back to latest.version file approach."
+        return ($null, $null, $null)
+    }
+    else {
+        Say-Verbose "Retrieved primary named payload URL from aka.ms link: '$AkaMsDownloadLink'."
+        Say-Verbose  "Downloading using legacy url will not be attempted."
+
+        #get version from the path
+        $pathParts = $AkaMsDownloadLink.Split('/')
+        if ($pathParts.Length -ge 2) { 
+            $SpecificVersion = $pathParts[$pathParts.Length - 2]
+            Say-Verbose "Version: '$SpecificVersion'."
+        }
+        else {
+            Say-Error "Failed to extract the version from download link '$AkaMsDownloadLink'."
+            return ($null, $null, $null)
+        }
+
+        #retrieve effective (product) version
+        $EffectiveVersion = Get-Product-Version -SpecificVersion $SpecificVersion -PackageDownloadLink $AkaMsDownloadLink
+        Say-Verbose "Product version: '$EffectiveVersion'."
+
+        return ($AkaMsDownloadLink, $SpecificVersion, $EffectiveVersion);
+    }
+}
+
+function Get-Feeds-To-Use() {
+    $feeds = @(
+        "https://builds.dotnet.microsoft.com/dotnet"
+        "https://dotnetcli.azureedge.net/dotnet"
+        "https://ci.dot.net/public"
+        "https://dotnetbuilds.azureedge.net/public"
+    )
+
+    if (-not [string]::IsNullOrEmpty($AzureFeed)) {
+        $feeds = @($AzureFeed)
+    }
+
+    if ($NoCdn) {
+        $feeds = @(
+            "https://dotnetcli.blob.core.windows.net/dotnet",
+            "https://dotnetbuilds.blob.core.windows.net/public"
+        )
+
+        if (-not [string]::IsNullOrEmpty($UncachedFeed)) {
+            $feeds = @($UncachedFeed)
+        }
+    }
+
+    Write-Verbose "Initialized feeds: $feeds"
+
+    return $feeds
+}
+
+function Resolve-AssetName-And-RelativePath([string] $Runtime) {
+    
+    if ($Runtime -eq "dotnet") {
+        $assetName = ".NET Core Runtime"
+        $dotnetPackageRelativePath = "shared\Microsoft.NETCore.App"
+    }
+    elseif ($Runtime -eq "aspnetcore") {
+        $assetName = "ASP.NET Core Runtime"
+        $dotnetPackageRelativePath = "shared\Microsoft.AspNetCore.App"
+    }
+    elseif ($Runtime -eq "windowsdesktop") {
+        $assetName = ".NET Core Windows Desktop Runtime"
+        $dotnetPackageRelativePath = "shared\Microsoft.WindowsDesktop.App"
+    }
+    elseif (-not $Runtime) {
+        $assetName = ".NET Core SDK"
+        $dotnetPackageRelativePath = "sdk"
+    }
+    else {
+        throw "Invalid value for `$Runtime"
+    }
+
+    return ($assetName, $dotnetPackageRelativePath)
+}
+
+function Prepare-Install-Directory {
+    $diskSpaceWarning = "Failed to check the disk space. Installation will continue, but it may fail if you do not have enough disk space.";
+
+    if ($PSVersionTable.PSVersion.Major -lt 7) {
+        Say-Verbose $diskSpaceWarning
+        return
+    }
+
+    New-Item -ItemType Directory -Force -Path $InstallRoot | Out-Null
+
+    $installDrive = $((Get-Item $InstallRoot -Force).PSDrive.Name);
+    $diskInfo = $null
+    try {
+        $diskInfo = Get-PSDrive -Name $installDrive
+    }
+    catch {
+        Say-Warning $diskSpaceWarning
+    }
+
+    # The check is relevant for PS version >= 7, the result can be irrelevant for older versions. See https://github.com/PowerShell/PowerShell/issues/12442.
+    if ( ($null -ne $diskInfo) -and ($diskInfo.Free / 1MB -le 100)) {
+        throw "There is not enough disk space on drive ${installDrive}:"
+    }
+}
+
+if ($Help) {
+    Get-Help $PSCommandPath -Examples
+    exit
+}
+
+Say-Verbose "Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:"
+Say-Verbose "- The SDK needs to be installed without user interaction and without admin rights."
+Say-Verbose "- The SDK installation doesn't need to persist across multiple CI runs."
+Say-Verbose "To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.`r`n"
+
+if ($SharedRuntime -and (-not $Runtime)) {
+    $Runtime = "dotnet"
+}
+
+$OverrideNonVersionedFiles = !$SkipNonVersionedFiles
+
+Measure-Action "Product discovery" {
+    $script:CLIArchitecture = Get-CLIArchitecture-From-Architecture $Architecture
+    $script:NormalizedQuality = Get-NormalizedQuality $Quality
+    Say-Verbose "Normalized quality: '$NormalizedQuality'"
+    $script:NormalizedChannel = Get-NormalizedChannel $Channel
+    Say-Verbose "Normalized channel: '$NormalizedChannel'"
+    $script:NormalizedProduct = Get-NormalizedProduct $Runtime
+    Say-Verbose "Normalized product: '$NormalizedProduct'"
+    $script:FeedCredential = ValidateFeedCredential $FeedCredential
+}
+
+$InstallRoot = Resolve-Installation-Path $InstallDir
+if (-not (Test-User-Write-Access $InstallRoot)) {
+    Say-Error "The current user doesn't have write access to the installation root '$InstallRoot' to install .NET. Please try specifying a different installation directory using the -InstallDir parameter, or ensure the selected directory has the appropriate permissions."
+    throw
+}
+Say-Verbose "InstallRoot: $InstallRoot"
+$ScriptName = $MyInvocation.MyCommand.Name
+($assetName, $dotnetPackageRelativePath) = Resolve-AssetName-And-RelativePath -Runtime $Runtime
+
+$feeds = Get-Feeds-To-Use
+$DownloadLinks = @()
+
+if ($Version.ToLowerInvariant() -ne "latest" -and -not [string]::IsNullOrEmpty($Quality)) {
+    throw "Quality and Version options are not allowed to be specified simultaneously. See https:// learn.microsoft.com/dotnet/core/tools/dotnet-install-script#options for details."
+}
+
+# aka.ms links can only be used if the user did not request a specific version via the command line or a global.json file.
+if ([string]::IsNullOrEmpty($JSonFile) -and ($Version -eq "latest")) {
+    ($DownloadLink, $SpecificVersion, $EffectiveVersion) = Get-AkaMsLink-And-Version $NormalizedChannel $NormalizedQuality $Internal $NormalizedProduct $CLIArchitecture
+    
+    if ($null -ne $DownloadLink) {
+        $DownloadLinks += New-Object PSObject -Property @{downloadLink = "$DownloadLink"; specificVersion = "$SpecificVersion"; effectiveVersion = "$EffectiveVersion"; type = 'aka.ms' }
+        Say-Verbose "Generated aka.ms link $DownloadLink with version $EffectiveVersion"
+        
+        if (-Not $DryRun) {
+            Say-Verbose "Checking if the version $EffectiveVersion is already installed"
+            if (Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $EffectiveVersion) {
+                Say "$assetName with version '$EffectiveVersion' is already installed."
+                Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot
+                return
+            }
+        }
+    }
+}
+
+# Primary and legacy links cannot be used if a quality was specified.
+# If we already have an aka.ms link, no need to search the blob feeds.
+if ([string]::IsNullOrEmpty($NormalizedQuality) -and 0 -eq $DownloadLinks.count) {
+    foreach ($feed in $feeds) {
+        try {
+            $SpecificVersion = Get-Specific-Version-From-Version -AzureFeed $feed -Channel $Channel -Version $Version -JSonFile $JSonFile
+            $DownloadLink, $EffectiveVersion = Get-Download-Link -AzureFeed $feed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
+            $LegacyDownloadLink = Get-LegacyDownload-Link -AzureFeed $feed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
+            
+            $DownloadLinks += New-Object PSObject -Property @{downloadLink = "$DownloadLink"; specificVersion = "$SpecificVersion"; effectiveVersion = "$EffectiveVersion"; type = 'primary' }
+            Say-Verbose "Generated primary link $DownloadLink with version $EffectiveVersion"
+    
+            if (-not [string]::IsNullOrEmpty($LegacyDownloadLink)) {
+                $DownloadLinks += New-Object PSObject -Property @{downloadLink = "$LegacyDownloadLink"; specificVersion = "$SpecificVersion"; effectiveVersion = "$EffectiveVersion"; type = 'legacy' }
+                Say-Verbose "Generated legacy link $LegacyDownloadLink with version $EffectiveVersion"
+            }
+    
+            if (-Not $DryRun) {
+                Say-Verbose "Checking if the version $EffectiveVersion is already installed"
+                if (Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $EffectiveVersion) {
+                    Say "$assetName with version '$EffectiveVersion' is already installed."
+                    Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot
+                    return
+                }
+            }
+        }
+        catch {
+            Say-Verbose "Failed to acquire download links from feed $feed. Exception: $_"
+        }
+    }
+}
+
+if ($DownloadLinks.count -eq 0) {
+    throw "Failed to resolve the exact version number."
+}
+
+if ($DryRun) {
+    PrintDryRunOutput $MyInvocation $DownloadLinks
+    return
+}
+
+Measure-Action "Installation directory preparation" { Prepare-Install-Directory }
+
+Say-Verbose "Zip path: $ZipPath"
+
+$DownloadSucceeded = $false
+$DownloadedLink = $null
+$ErrorMessages = @()
+
+foreach ($link in $DownloadLinks) {
+    Say-Verbose "Downloading `"$($link.type)`" link $($link.downloadLink)"
+
+    try {
+        Measure-Action "Package download" { DownloadFile -Source $link.downloadLink -OutPath $ZipPath }
+        Say-Verbose "Download succeeded."
+        $DownloadSucceeded = $true
+        $DownloadedLink = $link
+        break
+    }
+    catch {
+        $StatusCode = $null
+        $ErrorMessage = $null
+
+        if ($PSItem.Exception.Data.Contains("StatusCode")) {
+            $StatusCode = $PSItem.Exception.Data["StatusCode"]
+        }
+    
+        if ($PSItem.Exception.Data.Contains("ErrorMessage")) {
+            $ErrorMessage = $PSItem.Exception.Data["ErrorMessage"]
+        }
+        else {
+            $ErrorMessage = $PSItem.Exception.Message
+        }
+
+        Say-Verbose "Download failed with status code $StatusCode. Error message: $ErrorMessage"
+        $ErrorMessages += "Downloading from `"$($link.type)`" link has failed with error:`nUri: $($link.downloadLink)`nStatusCode: $StatusCode`nError: $ErrorMessage"
+    }
+
+    # This link failed. Clean up before trying the next one.
+    SafeRemoveFile -Path $ZipPath
+}
+
+if (-not $DownloadSucceeded) {
+    foreach ($ErrorMessage in $ErrorMessages) {
+        Say-Error $ErrorMessages
+    }
+
+    throw "Could not find `"$assetName`" with version = $($DownloadLinks[0].effectiveVersion)`nRefer to: https://aka.ms/dotnet-os-lifecycle for information on .NET support"
+}
+
+Say "Extracting the archive."
+Measure-Action "Package extraction" { Extract-Dotnet-Package -ZipPath $ZipPath -OutPath $InstallRoot }
+
+#  Check if the SDK version is installed; if not, fail the installation.
+$isAssetInstalled = $false
+
+# if the version contains "RTM" or "servicing"; check if a 'release-type' SDK version is installed.
+if ($DownloadedLink.effectiveVersion -Match "rtm" -or $DownloadedLink.effectiveVersion -Match "servicing") {
+    $ReleaseVersion = $DownloadedLink.effectiveVersion.Split("-")[0]
+    Say-Verbose "Checking installation: version = $ReleaseVersion"
+    $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $ReleaseVersion
+}
+
+#  Check if the SDK version is installed.
+if (!$isAssetInstalled) {
+    Say-Verbose "Checking installation: version = $($DownloadedLink.effectiveVersion)"
+    $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $DownloadedLink.effectiveVersion
+}
+
+# Version verification failed. More likely something is wrong either with the downloaded content or with the verification algorithm.
+if (!$isAssetInstalled) {
+    Say-Error "Failed to verify the version of installed `"$assetName`".`nInstallation source: $($DownloadedLink.downloadLink).`nInstallation location: $InstallRoot.`nReport the bug at https://github.com/dotnet/install-scripts/issues."
+    throw "`"$assetName`" with version = $($DownloadedLink.effectiveVersion) failed to install with an unknown error."
+}
+
+if (-not $KeepZip) {
+    SafeRemoveFile -Path $ZipPath
+}
+
+Measure-Action "Setting up shell environment" { Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot }
+
+Say "Note that the script does not ensure your Windows version is supported during the installation."
+Say "To check the list of supported versions, go to https://learn.microsoft.com/dotnet/core/install/windows#supported-versions"
+Say "Installed version is $($DownloadedLink.effectiveVersion)"
+Say "Installation finished"
+# SIG # Begin signature block
+# MIIoVQYJKoZIhvcNAQcCoIIoRjCCKEICAQExDzANBglghkgBZQMEAgEFADB5Bgor
+# BgEEAYI3AgEEoGswaTA0BgorBgEEAYI3AgEeMCYCAwEAAAQQH8w7YFlLCE63JNLG
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\ No newline at end of file
diff --git a/externals/install-dotnet.sh b/externals/install-dotnet.sh
index 4fc8609bd..9f7912eab 100755
--- a/externals/install-dotnet.sh
+++ b/externals/install-dotnet.sh
@@ -1272,6 +1272,61 @@ downloadwget() {
     return 0
 }
 
+extract_stem() {
+    local url="$1"
+    # extract the protocol
+    proto="$(echo $1 | grep :// | sed -e's,^\(.*://\).*,\1,g')"
+    # remove the protocol
+    url="${1/$proto/}"
+    # extract the path (if any) - since we know all of our feeds have a first path segment, we can skip the first one. otherwise we'd use -f2- to get the full path
+    full_path="$(echo $url | grep / | cut -d/ -f2-)"
+    path="$(echo $full_path | cut -d/ -f2-)"
+    echo $path
+}
+
+check_url_exists() {
+    eval $invocation
+    local url="$1"
+
+    local code=""
+    if machine_has "curl"
+    then
+        code=$(curl --head -o /dev/null -w "%{http_code}" -s --fail "$url");
+    elif machine_has "wget"
+    then
+        # get the http response, grab the status code
+        server_response=$(wget -qO- --method=HEAD --server-response "$url" 2>&1)
+        code=$(echo "$server_response" | grep "HTTP/" | awk '{print $2}')
+    fi
+    if [ $code = "200" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+sanitize_redirect_url() {
+    eval $invocation
+
+    local url_stem
+    url_stem=$(extract_stem "$1")
+    say_verbose "Checking configured feeds for the asset at ${yellow:-}$url_stem${normal:-}"
+
+    for feed in "${feeds[@]}"
+    do
+        local trial_url="$feed/$url_stem"
+        say_verbose "Checking ${yellow:-}$trial_url${normal:-}"
+        if check_url_exists "$trial_url"; then
+            say_verbose "Found a match at ${yellow:-}$trial_url${normal:-}"
+            echo "$trial_url"
+            return 0
+        else
+            say_verbose "No match at ${yellow:-}$trial_url${normal:-}"
+        fi
+    done
+    return 1
+}
+
 get_download_link_from_aka_ms() {
     eval $invocation
 
@@ -1324,6 +1379,11 @@ get_download_link_from_aka_ms() {
             return 1
         fi
 
+        sanitized_redirect_url=$(sanitize_redirect_url "$aka_ms_download_link")
+        if [[ -n "$sanitized_redirect_url" ]]; then
+            aka_ms_download_link="$sanitized_redirect_url"
+        fi
+
         say_verbose "The redirect location retrieved: '$aka_ms_download_link'."
         return 0
     else
@@ -1335,7 +1395,9 @@ get_download_link_from_aka_ms() {
 get_feeds_to_use()
 {
     feeds=(
+    "https://builds.dotnet.microsoft.com/dotnet"
     "https://dotnetcli.azureedge.net/dotnet"
+    "https://ci.dot.net/public"
     "https://dotnetbuilds.azureedge.net/public"
     )
 
diff --git a/src/installer.ts b/src/installer.ts
index c71a8c69d..4773b8d9c 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -101,9 +101,18 @@ export class DotnetVersionResolver {
       allowRetries: true,
       maxRetries: 3
     });
-    const response = await httpClient.getJson<any>(
-      DotnetVersionResolver.DotnetCoreIndexUrl
-    );
+
+    let response;
+    try {
+      response = await httpClient.getJson<any>(
+        DotnetVersionResolver.DotnetCoreIndexUrl
+      );
+    } catch (error) {
+      response = await httpClient.getJson<any>(
+        DotnetVersionResolver.DotnetCoreIndexFallbackUrl
+      );
+    }
+
     const result = response.result || {};
     const releasesInfo: any[] = result['releases-index'];
 
@@ -122,6 +131,8 @@ export class DotnetVersionResolver {
   }
 
   static DotnetCoreIndexUrl =
+    'https://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json';
+  static DotnetCoreIndexFallbackUrl =
     'https://dotnetcli.azureedge.net/dotnet/release-metadata/releases-index.json';
 }