Problem: Error-The application administrator locked out the user.
Solution: This error message appears when the database is used for Update\Backup\Technical purposes by the FIRST BIT technical team.
In order to fix the error, you need to do the following:
If the user sees such an error, then he needs to click Remove the lock and log on. 
Sometimes, instead of such a message, the user has these:
If the user sees such an error, then he needs to click OK.