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Microsoft KB Archive/105542

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Mac Srv: Users Missing After Upgrading to System 7

Article ID: 105542

Article Last Modified on 10/30/2006


  • Microsoft Mail for Appletalk Networks 3.0
  • Microsoft Mail for Appletalk Networks 3.1

This article was previously published under Q105542


Versions 3.0 and 3.1 of the Microsoft Mail for AppleTalk Networks server starts; however, it only contains one account: Network Manager. Also, the server name displays the server serial number rather than any previously assigned friendly name.


During an upgrade of the Macintosh Operating System from System 6 to System 7, the installation script does not move the Microsoft Mail Data file.

With System 6, both the Microsoft Mail Server and the Microsoft Mail Data files must be stored in the System Folder. With System 7 and later, a new subfolder named Extensions stores all extension classified files. Because the Microsoft Mail Server file is classified as an extension, the upgrade procedure correctly moves the Microsoft Mail Server file to the Extensions Folder. The Microsoft Mail Data file, however, is NOT classified as an extension. It is simply a file that retains data for the Microsoft Mail System. The System installer regards this as an unknown file type; therefore, the installer does not move the Microsoft Mail Data file to the Extensions Folder.

When the Macintosh is restarted, the Microsoft Mail Server file does not find the Microsoft Mail Data file. Because one is not available, a new one is created. The new Microsoft Mail Data file will contain a single user, Network Manager, and it will display the serial number in the Chooser.


To work around this problem, perform the following steps:

  1. Move the Microsoft Mail Data file stored in the Extensions folder to another folder. This file is usually fairly small (about 600K).
  2. Move the original Microsoft Mail Data file from the root level of the System Folder into the Extensions Folder.
  3. Restart the Macintosh and verify the server name is correct and the user accounts are present. When you are satisfied that the mail system has been restored to its original state, delete the first (smaller) Microsoft Mail Data file (the one you moved out of the Extensions folder).

Additional query words: 3.00 3.10 corrupt error boot lost users

Keywords: KB105542