This article outlines a workaround to an issue identified for users running Windows 11 22H2 Feature Update that impacts access to our RemoteApp platform. This article has been updated to reflect official information now published on the issue from Microsoft.
See official known issues guide posted here: Windows 11, version 22H2 known issues and notifications | Microsoft Learn
Problem Summary
After a user endpoint has upgraded to Windows 11 22H2 (build 22621), we have seen reports of issues connecting to hosted RemoteApps via the .rdp file download method. After installing Windows 11, version 22H2 (also called Windows 11 2022 Update), the Windows Remote Desktop application might stop responding when connecting via a Remote Desktop gateway or Remote Desktop Connection Broker. This issue can be observed when the client is at the "Loading virtual machine" or "Configuring remote connection" steps and might occur regardless of the OS version installed on the server hosting your RemoteApp. In some cases, the error message "Your Remote Desktop Services session has ended" can appear. If the application becomes unresponsive, it might need to be terminated using Windows Task Manager. See the Workaround section for guidance.
Workaround / Solution
If the Remote Desktop application becomes unresponsive, Windows Task Manager can be used to terminate it.
- Press and hold the Ctrl, Shift, and Esc keys on your keyboard.
- Select Processes from the left-hand side menu
- In the list that appears, find the process mstsc.exe
- Right-click on the process name and select End task
The workaround for issues mentioned in this article can be addressed by configuring a special Group Policy in the Windows client connecting to our RemoteApp platform.
Warning/Note: Remote Desktop sessions which connect over WAN (wide-area network) might experience poor performance following the application of the below workaround. Setting this policy also disables UDP (User Datagram Protocol) for all Remote Desktop connections made from the end-user device; either locally over the network (LAN) or remotely over the internet (WAN). We strongly recommend that this Group Policy change is reverted once this issue is resolved in a future Windows update.
- Open the appropriate Group Policy editor.
- For managed devices (common for enterprises and organizations), open the Group Policy Management Console and create or edit a policy that targets your clients
- For unmanaged devices (common for home users), open the Group Policy Editor. This can be accomplished by opening the Start Menu and typing group policy. Select Edit group policy from the results
- Using the right-side panel, browse to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Connection Client
- From the left-side panel, double-click the policy setting Turn Off UDP On Client and set it to Enabled
- Select OK and restart your device(s) to apply the policy setting
Next steps: Microsoft are working on a resolution and will provide an update in an upcoming release.
Affected Operating System Platforms:
- Client: Windows 11, version 22H2
- Server: None
