Hi Everyone,
We have one of are larger clients that was recently transitioned into a server farm using Broker with 10 hosts (approx. 75 users). Broker and hosts are all on Server 2019 Datacenter. The issue seems to crop up randomly, some users are effected after 10 minutes, some after 5 hours, regardless of host but either way their session hangs (completely unresponsive).
They have 9 offices, all are point to point VPN'd to our Datacenter where the servers are and all of them work fully out of RDP. I've turned logging on the Broker but doesn't seem to be catching much, on the other hand I am getting the following error from the hosts when a user has the "freezing" issue:
EventID 1401: The server is using version 0xA0600 of the RDP graphics protocol (client mode: 0, AVC available: 1).
EventID 266: RDPClient_SSL: An error was encountered when transitioning from TsSslStateDisconnected to TsSslStateDisconnected in response to TsSslEventInvalidState (error code 0x8000FFFF).
Event ID 1105: The multi-transport connection has been disconnected.
They always seem to get this string of reports under Microsoft-Windows-TerminalServices-RDPClient/Operational when the hang happens. We've tried restarting all of the hosts and broker, all firewalls, etc but the issue continues and needless to say they are getting frustrated. The only two "fixes" seem to be booting their session, or waiting the 30+ minutes for the session to come back.
I've done a fair bit of research but most paths seem to lead to a dead end, any insight provided would be massively appreciated. I can upload all the logs I've collected if need be.
Thanks