If your Microsoft Access project (.adp) is connected to a Microsoft SQL Server 6.5 (or later) database with SQL Server security implemented, then you can change the logon password from within Access.
Guidelines for passwords
User names can range from 1 to 20 characters, and can include alphabetic characters, accented characters, numbers, spaces, and symbols, with the following exceptions:
Note Passwords are case-sensitive.
The password is now changed and Access resets the .adp connection with the new password information. The next time you or any other user opens the project, a dialog box will be displayed that requests the new password.
Important If you lose or forget your password, it can't be recovered, and you won't be able to open your project.