I've been dealing with a frustrating issue where Microsoft Remote Desktop Connection (MSTSC.exe) randomly freezes during active sessions on Windows 11 after the latest updates. I've noticed that the freezing doesn't trigger any error logs on either the client or server, which makes troubleshooting really tricky. The only way to restore the session seems to be by manually disconnecting and reconnecting or unplugging and replugging the network connection. It's really annoying because other RDP sessions and network activities run fine. I've experienced this on multiple Windows 11 devices connecting to a Windows Server 2019, and all have the latest cumulative updates. I'm hoping to find a workaround or any advice from others who might be facing this issue too.
5 Answers
Seems like Microsoft is really dropping the ball lately! Too many issues cropping up with updates, huh? Let’s hope they resolve this soon.
I had a similar issue with one of our SQL Servers where the RDP session would just lock up out of the blue. The only fix was reconnecting. It seems like a weird glitch sometimes, doesn't it?
We've encountered similar problems a while back when RDP users would get stuck at the "Please Wait" message after the Duo handshake. We eventually managed to reduce the occurrence by enforcing TCP connections. It feels like the whole situation might have flared up again with this last round of updates, unfortunately.
I haven't personally encountered this problem, but it's definitely concerning that so many people are experiencing it. Hope you find a good fix soon!
I recently faced an issue with a remote desktop services farm where half the users couldn’t connect. I found that disabling UDP for RDP seemed to help. You can set this registry key on the affected clients: `reg add "HKLMSOFTWAREPoliciesMicrosoftWindows NTTerminal ServicesClient" /v fClientDisableUDP /t REG_DWORD /d 1 /f`.

We're not using Duo in our setup, just straight RDP. It's frustrating! I'm really hoping this KB5078127 patch helps with the MSTSC issues.