About 5 years ago I stopped using roaming profiles (wintendo pcs) when I discovered a strange fault.
If the user logs in on multiple workstations it seems it is possible to corrupt their profile.
If shows as a problem when they logout and then try to log in again, they cannot type anything into any of the login box panels.
Other than crowbarring the pc the only way I found around it was to use the mouse to cancel out of login then start regedit, open any key then close it again, exit regedit and logoff.
Login box then behaved normally.
Getting them to log out of all current pcs and deleting their profile also worked, I think.
I never bothered to try roaming profiles again but perhaps someone has further information on this.
KYOSEI. There are only three groups of people that can count. Those that can, and those that can't.