Remote Desktop intermittently freezing
I also ran into this issue since July 2019 on a Windows 10 1903 acting as the client machine. The following workaround on the client works for me, so that RDP no longer freezes.
Start an elevated invite de commandes (run cmd.exe en tant qu’administrateur), and
then run:
reg add “HKLM\software\policies\microsoft\windows nt\Terminal
Services\Client” /v fClientDisableUDP /d 1 /t REG_DWORD
After that, close and reopen all your RDP sessions on your client computer to restart the Remote Desktop Client (mstsc.exe, aka Microsoft Terminal Services Client) application.
I’m waiting for a final fix to this issue.
Follow-up: I am not sure, but it looks like fixed in 21H1 (both client and server must run 21H1 or higher). For me I no longer see freezes without the disable UDP workaround.