Fast User Switching is a feature, i.e. a term for some rather loosely specified functionality, of a multi-user operating system. It allows users to switch between user accounts on a single computer without quitting applications and logging out.
This is considered useful so that users do not have to be forced logged out for another user to log in; specifically on a shared desktop.
At CAS, we disable Fast User switching for several reasons:
- Some software cannot have two instances open at the same time.
- Switching over to a new account is not always successful; requiring a reboot to recover.
- Switching back to a previously open account is not always successful; requiring a reboot to recover.
Since the point of using Fast User Switching is to prevent rebooting to allow another user to temporarily use a computer, the benefits are lost with the issues that we've seen.
Force Logoff Screensaver
CAS can enable a screensaver that the forces the logged on user to be logged off automatically after a timer (that's displayed in the screensaver) reaches zero. Simply move the mouse, to cancel the screensaver and the timer.
CAS can enable a screensaver that displays a message allowing anyone force log off the currently logged on user.