I suggest that before he try to re-open the file, he pull down the window menu and select the Show sub menu to see a list of all files open in the background. I suspect that the file is already open as a hidden background file and this would explain both why he did not get a log in dialog dialog and why he finds that the privileges are different. This could happen if an external file reference in file A requires File B to be open. When the user closes File B, open with the Password that he entered, the reference in File A forces the file back open in the background. If the current account name (not user name) and password used to Open File A is different than that used to open File B, FileMaker will first attempt to open that file with the same account name and password as File A so this can re-open the file with different credentials.
Note: Account names are Specified in Manage | Security. User names are specified in preferences. And not to make this more confusing, when FileMaker displays the log in dialog when a file first opens, it inserts the current user name as the default account name in the dialog.
makes sense. I do know that some of these are used as Data Sources to others. Ill have him take a look at the Window menu. Thanks.