Slow initial RDP connection

M

Martijn Ruiter

Hello.


I have a strange problem: since we recently moved from a 2003 domain (I know, way too long used) to a 2016 domain (no domain upgrade but a fresh install), RDP to a PC is taking a long time to login. A connection is made, but the RDP window shows a spinning circle at “Welcome” for around 90 seconds. After this, for the most PCs the desktop is shown and the RDP connection is as fast as it should be. Some PCs however never login, the welcome keeps spinning. Even worse: if you disconnect/connect the RDP connection a couple of times and you try to reconnect again, the target PC will never login and even physically you are unable to login… a hard reset only will solve the problem…

This behavior is only when RDP to Windows 7 or Server 2012. Logging in remote to Windows 10 or Server 2016 works without any delay. I tried different combinations:


PC A taken out domain and PC B taken out domain: RDP from A to B no problem

PC A taken out domain and PC B taken out domain: RDP from B to A no problem

PC A taken out domain en PC B member of domain: RDP from A to B 90 sec delay at logging in

PC A taken out domain en PC B member of domain: RDP from B to A no problem

PC A member of domain en PC B member of domain: RDP from A or B to B or A 90 sec delay at logging in

PC A member of domain but no GPO policies applied and PC B member of domain but no GPO policies applied: RDP 90 sec delay at logging in


PC A and PC B are Windows 7 Pro, fully updated or vanilla.


I tried all the GPO fixes found on the net about RDP tweaking, changing ports, or adding enablecredsspsupport:i:0 to default.rdp file.

The eventlog (of RDP or terminal services) of the target PC is not showing any errors.


Somehow the new domain is causing this behavior…


Thanks in advance,


Martijn Ruiter

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