Microsoft KB Archive/50531

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Mac DOS: Err Msg: "You Need to Load AppleTalk" w/ AppleShare PC

Article ID: 50531

Article Last Modified on 10/30/2006


  • Microsoft Mail for AppleTalk Networks 1.37
  • Microsoft Mail for AppleTalk Networks 2.0
  • Microsoft Mail for Appletalk Networks 3.0

This article was previously published under Q50531


To use Microsoft Mail (PC Client) with AppleShare PC version 2.0, you must first load the COMPAT.COM utility (provided with AppleShare PC 2.0) into memory.

AppleShare PC 2.0 uses a new protocol set that allows AppleTalk devices to communicate with each other (AppleTalk Phase 2). PC Client Mail is designed to work with AppleTalk Phase 1 protocol. COMPAT.COM must translate the older protocol so that it is compatible with AppleTalk Phase 2 protocol.

If you attempt to run PC Client Mail without installing COMPAT.COM, Mail cannot locate the AppleTalk driver, and the following message is displayed:

You need to load the AppleTalk device driver software before starting Mail


COMPAT.COM tells PC Client Mail that the AppleTalk driver is loaded at software interrupt address 60. If the MAIL.INI file contains the line INT=xx, where xx is not equal to 60, Mail will not locate the AppleTalk driver at the correct software address, and you will still receive the message "You need to load the AppleTalk device driver software before starting Mail."

Additional query words: 1.37 2.00 3.00

Keywords: KB50531