My users are now unable to access the database. This problem did not begin until a week ago. When ever some of users attemted to open up the database they receive this error "Could not use 'Admin'; file already in use." instead of getting the logon box. This also occurs even when they are the only one trying to logon. I have check their security setting and could not find anything different than the other users. I need someone who really knows a great deal about MS Access security.