Issues with Remote Desktop on Windows 11 after Update 22H2

Anonymous
2022-09-22T13:54:07+00:00

All of our Remote Desktop Users using Windows 11 are having problems connecting to Remote Desktop after installing this update. It just hangs at connecting.

We have found that there is a bug in the Remote Desktop client so that it is only trying the UDP connection and not trying TCP connection. We only allow the port 443 connection through on our firewall.

The only workaround we have found is to make the following change on the Windows 11 computer.

Have to set this value to 1 in the registry for Windows 11 client to work outside the network

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client

KEY VALUE - fClientDisableUDP SET TO 1

Otherwise the Remote client just keeps trying to connect via UDP.

This issue did not start until the Windows 11 update was installed over the last couple days.

Jeff

Windows for business | Windows Server | User experience | Remote desktop clients

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  1. Anonymous
    2023-02-06T07:47:27+00:00

    Hi everyone.

    Microsoft has released an update that fixes the issue.

    You must update to: https://support.microsoft.com/en-us/topic/january-26-2023-kb5022360-os-build-22621-1194-preview-f6973dbe-bcc4-402a-8b9a-0541b0959403

    We have tested and it works.

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  2. Anonymous
    2023-02-06T14:36:23+00:00

    Tried again to install 22h2 including KB5022360 .

    Same issue. No Remote Desktop.

    Removed 22h2 ....

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  3. Anonymous
    2023-02-08T03:52:13+00:00

    Not getting download link anywhere in the below mentioned path. Can you share direct download link.

    https://support.microsoft.com/en-us/topic/january-26-2023-kb5022360-os-build-22621-1194-preview-f6973dbe-bcc4-402a-8b9a-0541b0959403

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  4. Anonymous
    2023-02-09T21:46:10+00:00

    I got this issue a few weeks/months ago after the 22H2 update and the following setting fixed the Remote desktop issue:

    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client

    KEY VALUE - fClientDisableUDP SET TO 1

    On Feb 7th, I installed the KB5022360 and again have the same problem.

    • Tried KEY VALUE - fClientDisableUDP SET TO 1 - still had the issue
    • Tried KEY VALUE - fClientDisableUDP SET TO 0 - still had the issue
    • Tried uninstalling KB5022360 and KEY VALUE - fClientDisableUDP SET TO 1 - it works fine.

    Any suggestions, so I can have the latest updates and Remote desktop also works?

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  5. Anonymous
    2023-02-10T00:07:45+00:00

    Yup, confirming above - I have already had the Registry fix enabled since the issue first arose. Today a user contacted me to say it wasn't working again. When I tested I was getting the original error again. I had to toggle the fClientDisableUDP to 0 again - didn't work, back to 1 - started working again

    Come on MS - fix your stuff properly.

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