The servers reboot at 20:00:00 to clear any connections to the database, before the nightly utilities start at 20:30:00. User can log back in after servers come back up and continue working with email, Word, Excel and the like until 22:00:00 then the system policy takes over and logs them out.

As for the application, we didn’t write it and the problem has been brought up to the vendor several times, but they have not come up with a solution.