After upgrading to a new version of AccountEdge the software may default to the user name Administrator and the Single-User log on. When you go to log in to the company file for the first time after upgrading, make sure that if you are using AccountEdge Network Edition or AccountEdge Pro for Windows in a Multi-User Environment that you are selecting the Multi-User Sign on Option (when you go to put in your user name and password you have this selection).