From now on and thanks to this lite utility, that will never happen again.
WinLock is run with Windows and can be setup so it will end the session whenever we decide. Just program it and forget about the time it has to be switched off.
If you prefer the computer to be switched of instead of the session closed, you can set it too.
But those aren't the only features included in the application: it can block contents, folders, remote access,...
In addition it's not difficult to use and the interface is really intuitive, so you will not have any problem using it.
30 days trial version