We have a server farm running terminal services on Windows server 2012 systems. We use user profile disks.
The problem we have is, when we change a setting in the user section of the GPO, it only gets applied to new user accounts, not existing ones. I'm sure stuff is being cached, but I don't see how to force a reset of this information.
Blowing away the user profile disk solves the problem, but we can't do that for 400 users, because each one has some customized icons on their desktop, which would have to be re-configured.
I've got loop back processing enabled and the farm computers are linked to the remote desktop users group policy. Not sure how to move forward with this.