Authorization to a secure Application Server can expire
after a certain amount of time (determined by your administrator).
This means that you could leave your Web browser for a period of time
and come back to an expired Xplore session.
If your session expires,
an error message appears that says your session is an invalid session
ID when you try to use Xplore.
To restore authorization,
you must either restart Xplore or use the Web browser's
Back button to return to the login frame and resubmit
your user name and password.