we have 10 Windows Sever 2019 RD Servers. If a new users logs in to the Server, sometimes the Apps of other users crashs or get unresponsive for some seconds.
It doesn't matter if the new users connect via RDP or Citrix ICA. It's always a published full desktop.
Servers are up to date. And this can't be simulated, because it does not happen every time.
In the event logs, I can only see the AppCrash and some seconds before the new user login.
Any ideas where to search?