Windows Server 2022 Remote desktop Server UDP issue

Hello everybody,

I have been facing this problem since my first configurations in Windows Server 2022 more than a year ago, I thought it was a passing bug which will be resolved quickly but I am still waiting, I will share with you so the details:

- Configuration: VM WS2022 Standard FRENCH: Roles: AD Server, RDS Server (Gateway+Host Server+License Server)

-Symptoms :

With default settings (UDP enabled in RD Gateway) the client connection is dropped after 3 minutes with the following message: "Remote Desktop Connection: Your Remote Desktop session ended because the remote computer didn't receive any input from you".

I tested the same configuration on other platforms (with other firewalls) I even tested on a physical server instead of the VM ; always the same problem.

I also did tests with other versions of Windows Server (2019, 2016): no errors, no connection drop.

The workaround is to disable UDP:

- Client side (registry): fClientDisableUDP at 1

or

- RDGateway side: Uncheck  UDP Transport option

or

-Firewall side: Block UDP port 3391

I haven't found much documentation of this issue  I'm posting in the hope that someone else is facing the same problem.