diff --git a/src/Common/src/Interop/Windows/winhttp/Interop.SafeWinHttpHandle.cs b/src/Common/src/Interop/Windows/winhttp/Interop.SafeWinHttpHandle.cs
index f04412fbc504..8342b8dd286d 100644
--- a/src/Common/src/Interop/Windows/winhttp/Interop.SafeWinHttpHandle.cs
+++ b/src/Common/src/Interop/Windows/winhttp/Interop.SafeWinHttpHandle.cs
@@ -12,9 +12,6 @@ internal partial class Interop
 {
     internal partial class WinHttp
     {
-        // Issue 2501: Fold SafeWinHttpHandleWithCallback and SafeWinHttpHandle into a single type.
-        // SafeWinHttpHandleWithCallback is incorrectly overriding the Dispose(bool disposing) method
-        // and will be fixed as part of merging the classes.
         internal class SafeWinHttpHandle : SafeHandleZeroOrMinusOneIsInvalid
         {
             private SafeWinHttpHandle _parentHandle = null;
@@ -59,43 +56,5 @@ protected override bool ReleaseHandle()
                 return Interop.WinHttp.WinHttpCloseHandle(handle);
             }
         }
-
-        internal sealed class SafeWinHttpHandleWithCallback : SafeWinHttpHandle
-        {
-            // Add a reference to this object so that the AppDomain doesn't get unloaded before the last WinHttp callback.
-            public void AttachCallback()
-            {
-                bool ignore = false;
-                DangerousAddRef(ref ignore);
-            }
-
-            public void DetachCallback()
-            {
-                DangerousRelease();
-            }
-
-            protected override void Dispose(bool disposing)
-            {
-                if (disposing)
-                {
-                    // We need to initiate the asynchronous process of closing the WinHttp handle:
-                    // 1. Ensure that all other WinHttp function calls for this handle have returned.
-                    // 2. Call WinHttpCloseHandle.
-                    // 3. Wait for WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING in the callback.
-                    //    On this event, call DetachCallback.
-                    //
-                    // WinHttp guarantees that no other calls to the callback are made for this handle after 
-                    // WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING has been received.
-                    // Holding the reference to the SafeHandle object ensures that the appdomain where the SafeHandle 
-                    // lives until it is guaranteed that no further callback calls are made from the native (WinHttp) side.
-                    Interop.WinHttp.WinHttpCloseHandle(handle);
-                }
-            }
-
-            protected override bool ReleaseHandle()
-            {
-                return base.ReleaseHandle();
-            }
-        }
     }
 }
diff --git a/src/Common/src/Interop/Windows/winhttp/Interop.winhttp.cs b/src/Common/src/Interop/Windows/winhttp/Interop.winhttp.cs
index 4230bf7fd1a6..40c29fe741b8 100644
--- a/src/Common/src/Interop/Windows/winhttp/Interop.winhttp.cs
+++ b/src/Common/src/Interop/Windows/winhttp/Interop.winhttp.cs
@@ -29,14 +29,6 @@ public static extern SafeWinHttpHandle WinHttpConnect(
             ushort serverPort,
             uint reserved);
 
-        // NOTE: except for the return type, this refers to the same function as WinHttpConnect.
-        [DllImport(Interop.Libraries.WinHttp, EntryPoint = "WinHttpConnect", CharSet = CharSet.Unicode, SetLastError = true)]
-        public static extern SafeWinHttpHandleWithCallback WinHttpConnectWithCallback(
-            SafeWinHttpHandle sessionHandle,
-            string serverName,
-            ushort serverPort,
-            uint reserved);
-
         [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = true)]
         public static extern SafeWinHttpHandle WinHttpOpenRequest(
             SafeWinHttpHandle connectHandle,
@@ -47,17 +39,6 @@ public static extern SafeWinHttpHandle WinHttpOpenRequest(
             string acceptTypes,
             uint flags);
 
-        // NOTE: except for the return type, this refers to the same function as WinHttpOpenRequest.
-        [DllImport(Interop.Libraries.WinHttp, EntryPoint = "WinHttpOpenRequest", CharSet = CharSet.Unicode, SetLastError = true)]
-        public static extern SafeWinHttpHandleWithCallback WinHttpOpenRequestWithCallback(
-            SafeWinHttpHandle connectHandle,
-            string verb,
-            string objectName,
-            string version,
-            string referrer,
-            string acceptTypes,
-            uint flags);
-
         [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = true)]
         [return: MarshalAs(UnmanagedType.Bool)]
         public static extern bool WinHttpAddRequestHeaders(
@@ -256,61 +237,5 @@ public static extern IntPtr WinHttpSetStatusCallback(
             WINHTTP_STATUS_CALLBACK callback,
             uint notificationFlags,
             IntPtr reserved);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = true)]
-        public static extern SafeWinHttpHandleWithCallback WinHttpWebSocketCompleteUpgrade(
-            SafeWinHttpHandle requestHandle,
-            IntPtr context);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = false)]
-        public static extern uint WinHttpWebSocketSend(
-            SafeWinHttpHandle webSocketHandle,
-            WINHTTP_WEB_SOCKET_BUFFER_TYPE bufferType,
-            IntPtr buffer,
-            uint bufferLength);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = false)]
-        public static extern uint WinHttpWebSocketReceive(
-            SafeWinHttpHandle webSocketHandle,
-            IntPtr buffer,
-            uint bufferLength,
-            out uint bytesRead,
-            out WINHTTP_WEB_SOCKET_BUFFER_TYPE bufferType);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = false)]
-        public static extern uint WinHttpWebSocketShutdown(
-            SafeWinHttpHandle webSocketHandle,
-            ushort status,
-            byte[] reason,
-            uint reasonLength);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = false)]
-        public static extern uint WinHttpWebSocketShutdown(
-            SafeWinHttpHandle webSocketHandle,
-            ushort status,
-            IntPtr reason,
-            uint reasonLength);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = false)]
-        public static extern uint WinHttpWebSocketClose(
-            SafeWinHttpHandle webSocketHandle,
-            ushort status,
-            byte[] reason,
-            uint reasonLength);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = false)]
-        public static extern uint WinHttpWebSocketClose(
-            SafeWinHttpHandle webSocketHandle,
-            ushort status,
-            IntPtr reason,
-            uint reasonLength);
-
-        [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = false)]
-        public static extern uint WinHttpWebSocketQueryCloseStatus(
-            SafeWinHttpHandle webSocketHandle,
-            out ushort status,
-            byte[] reason,
-            uint reasonLength,
-            out uint reasonLengthConsumed);
     }
 }