diff --git a/src/SignalRServiceExtension/Bindings/SignalRAsyncCollector.cs b/src/SignalRServiceExtension/Bindings/SignalRAsyncCollector.cs
index 92f3183b..b434853c 100644
--- a/src/SignalRServiceExtension/Bindings/SignalRAsyncCollector.cs
+++ b/src/SignalRServiceExtension/Bindings/SignalRAsyncCollector.cs
@@ -59,24 +59,29 @@ internal SignalRAsyncCollector(IAzureSignalRSender client)
 
                 if (!string.IsNullOrEmpty(groupAction.ConnectionId))
                 {
-                    if (groupAction.Action == GroupAction.Add)
+                    switch(groupAction.Action)
                     {
-                        await client.AddConnectionToGroup(groupAction.ConnectionId, groupAction.GroupName).ConfigureAwait(false);
-                    }
-                    else
-                    {
-                        await client.RemoveConnectionFromGroup(groupAction.ConnectionId, groupAction.GroupName).ConfigureAwait(false);
+                        case GroupAction.Add:
+                            await client.AddConnectionToGroup(groupAction.ConnectionId, groupAction.GroupName).ConfigureAwait(false);
+                            break;
+                        case GroupAction.Remove:
+                            await client.RemoveConnectionFromGroup(groupAction.ConnectionId, groupAction.GroupName).ConfigureAwait(false);
+                            break;
                     }
                 }
                 else if (!string.IsNullOrEmpty(groupAction.UserId))
                 {
-                    if (groupAction.Action == GroupAction.Add)
-                    {
-                        await client.AddUserToGroup(groupAction.UserId, groupAction.GroupName).ConfigureAwait(false);
-                    }
-                    else
+                    switch (groupAction.Action)
                     {
-                        await client.RemoveUserFromGroup(groupAction.UserId, groupAction.GroupName).ConfigureAwait(false);
+                        case GroupAction.Add:
+                            await client.AddUserToGroup(groupAction.UserId, groupAction.GroupName).ConfigureAwait(false);
+                            break;
+                        case GroupAction.Remove:
+                            await client.RemoveUserFromGroup(groupAction.UserId, groupAction.GroupName).ConfigureAwait(false);
+                            break;
+                        case GroupAction.RemoveAll:
+                            await client.RemoveUserFromAllGroups(groupAction.UserId).ConfigureAwait(false);
+                            break;
                     }
                 }
                 else
@@ -95,4 +100,4 @@ internal SignalRAsyncCollector(IAzureSignalRSender client)
             return Task.CompletedTask;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/SignalRServiceExtension/Bindings/SignalRGroupAction.cs b/src/SignalRServiceExtension/Bindings/SignalRGroupAction.cs
index dff7b900..1bf611bf 100644
--- a/src/SignalRServiceExtension/Bindings/SignalRGroupAction.cs
+++ b/src/SignalRServiceExtension/Bindings/SignalRGroupAction.cs
@@ -33,6 +33,8 @@ public enum GroupAction
         [EnumMember(Value = "add")]
         Add,
         [EnumMember(Value = "remove")]
-        Remove
+        Remove,
+        [EnumMember(Value = "removeAll")]
+        RemoveAll
     }
 }
\ No newline at end of file
diff --git a/src/SignalRServiceExtension/Client/AzureSignalRClient.cs b/src/SignalRServiceExtension/Client/AzureSignalRClient.cs
index ec062216..385a5a4d 100644
--- a/src/SignalRServiceExtension/Client/AzureSignalRClient.cs
+++ b/src/SignalRServiceExtension/Client/AzureSignalRClient.cs
@@ -117,6 +117,16 @@ public async Task RemoveUserFromGroup(string userId, string groupName)
             await serviceHubContext.UserGroups.RemoveFromGroupAsync(userId, groupName);
         }
 
+        public async Task RemoveUserFromAllGroups(string userId)
+        {
+            if (string.IsNullOrEmpty(userId))
+            {
+                throw new ArgumentException($"{nameof(userId)} cannot be null or empty");
+            }
+            var serviceHubContext = await serviceManagerStore.GetOrAddByConnectionString(connectionString).GetAsync(hubName);
+            await serviceHubContext.UserGroups.RemoveFromAllGroupsAsync(userId);
+        }
+
         public async Task AddConnectionToGroup(string connectionId, string groupName)
         {
             if (string.IsNullOrEmpty(connectionId))
@@ -165,4 +175,4 @@ private static IEnumerable<Claim> BuildJwtClaims(IEnumerable<Claim> customerClai
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/SignalRServiceExtension/Client/IAzureSignalRSender.cs b/src/SignalRServiceExtension/Client/IAzureSignalRSender.cs
index 47534104..287e7877 100644
--- a/src/SignalRServiceExtension/Client/IAzureSignalRSender.cs
+++ b/src/SignalRServiceExtension/Client/IAzureSignalRSender.cs
@@ -14,7 +14,8 @@ internal interface IAzureSignalRSender
         Task SendToGroup(string group, SignalRData data);
         Task AddUserToGroup(string userId, string groupName);
         Task RemoveUserFromGroup(string userId, string groupName);
+        Task RemoveUserFromAllGroups(string userId);
         Task AddConnectionToGroup(string connectionId, string groupName);
         Task RemoveConnectionFromGroup(string connectionId, string groupName);
     }
-}
\ No newline at end of file
+}
diff --git a/test/SignalRServiceExtension.Tests/SignalRAsyncCollectorTests.cs b/test/SignalRServiceExtension.Tests/SignalRAsyncCollectorTests.cs
index 255ec57b..6e8a668c 100644
--- a/test/SignalRServiceExtension.Tests/SignalRAsyncCollectorTests.cs
+++ b/test/SignalRServiceExtension.Tests/SignalRAsyncCollectorTests.cs
@@ -123,6 +123,26 @@ await collector.AddAsync(new SignalRGroupAction
             Assert.Equal("group1", actualData.Arguments[1]);
         }
 
+        [Fact]
+        public async Task AddAsync_WithUserId_CallsRemoveUserFromAllGroups()
+        {
+            var signalRSenderMock = new Mock<IAzureSignalRSender>();
+            var collector = new SignalRAsyncCollector<SignalRGroupAction>(signalRSenderMock.Object);
+
+            await collector.AddAsync(new SignalRGroupAction
+            {
+                UserId = "userId1",
+                Action = GroupAction.RemoveAll
+            });
+
+            signalRSenderMock.Verify(
+                c => c.RemoveUserFromAllGroups("userId1"),
+                Times.Once);
+            signalRSenderMock.VerifyNoOtherCalls();
+            var actualData = signalRSenderMock.Invocations[0];
+            Assert.Equal("userId1", actualData.Arguments[0]);
+        }
+
         [Fact]
         public async Task AddAsync_InvalidTypeThrowException()
         {
@@ -240,4 +260,4 @@ public async Task AddAsync_GroupOperation_WithoutParametersThrowException()
             await Assert.ThrowsAsync<ArgumentException>(() => collector.AddAsync(item));
         }
     }
-}
\ No newline at end of file
+}