When users connect to our Windows 8.1 virtual desktops from their Wyse WTOS thin clients, they enter in their credentials hit login, the thin client connects and does its thing within 1 second.
Then it hits the RDS server and the Event 303 delay happens:
The user "DOMAIN\JDOE", on client computer "192.168.0.1", disconnected from the following network resource: "rdserver2.my.domain.net". Before the user disconnected, the client transferred 10081 bytes and received 16736 bytes.
The client session duration was 7 seconds. Connection protocol used: "RPC-HTTP".
During this 7 second delay (which ranges from 5 seconds to 20 seconds) the user just gets totally black screen and time stops and they think they are using the slowest computer in the whole world. Then it gets to the Windows login screen and does the normal 'applying group policy' etc, which takes another 15-20 seconds - but that's okay because they can see the computer is "doing something" and not just a black screen. I will do ANYTHING to reduce this event 303 delay.
https://technet.microsoft.com/en-us/library/cc775326(v=ws.10).aspx
Microsoft website says "This is a normal condition. No further action is required." I also created a support case with Microsoft and they did not help.
My users are not normal. How can i reduce this delay? Again, I'll do anything!