One of our larger customers has the following setup:
Windows 2008 R2 Active Directory with 2x DC at a datacentre and 1x DC in their head office, 3x RDS servers in a DNS RR terminal server farm and a DC acting as a gateway server. The end user accesses the RDS infrastructure via an external URL.
The client PCs are Windows 7 x86 with bare minimum software. All clients and servers are up to date with released Windows Updates.
When a user logs into the RDS and leaves their computer, it locks after a certain amount of time. If they unlock their computer all appears well, but when they unlock the RDS session, they invariably see character corruption which means the password is incorrect and they are unable to log in.
There is a workround by users pressing ESC a few times or disconnecting and reconnecting, however a proper resolve to this issue is requested.
Any ideas what is causing this and how I can go about troubleshooting?