There are machines in a shared lab. Sometimes someone will lock the machine with the intention of coming back, but for whatever reason they do not. Currently the machine is powered off so another user can use it.
What would be nice would be to set a timer, say 20 minutes, then have a button display that could allow the next user to claim the machine. It should logout the current user and present the login screen to the next user.
Is there a Group Policy setting or perhaps some other means (Windows Credential Provider) to force a user logoff when a machine has been locked for a specified period of time?