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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments No comments

125 answers

Sort by: Oldest
  1. Anonymous
    2022-10-06T12:51:18+00:00

    If you go up in this thread a few posts you will see the step by step instructions.

    I am not a IT "pro" by any means, and I was able to add the KEYVALUE to the registry, assign it a "1" value, and restart and everything worked fine after that.

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments No comments
  2. Anonymous
    2022-10-07T13:33:35+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

    I confirm that the solution you report does it work! thanks a lot! In the next updates do you think the problem will be solved? otherwise I will have to do this manual adjustment on the pc of all employees ... 😒

    Was this answer helpful?

    4 people found this answer helpful.
    0 comments No comments
  3. Anonymous
    2022-10-07T15:30:07+00:00

    I am getting the 204 error. I put the recommended fix in the registry and still getting the same error. Can anyone please help

    Was this answer helpful?

    3 people found this answer helpful.
    0 comments No comments
  4. Anonymous
    2022-10-10T22:10:32+00:00

    Make sure you set the value in the client machine (source Machine) and give it a reboot. After the reboot double check again the value is set to 1.

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments No comments
  5. Anonymous
    2022-10-12T14:34:26+00:00

    I've done everything noted here and I'm still getting a 0x4 error when trying to connect over the internet.

    Connecting via local network is fine, though.

    Was this answer helpful?

    0 comments No comments