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Microsoft KB Archive/104485

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Knowledge Base

PC Ext: Err Msg: Error 21 Missing Routing File

Article ID: 104485

Article Last Modified on 10/30/2006


  • Microsoft Mail for PC Networks 3.2

This article was previously published under Q104485


In version 3.2 of the Microsoft Mail for PC Networks External Mail program (EXTERNAL.EXE), Mail's message transfer agent (MTA), you may receive the following error message:

Error 21 Missing Routing File


This error means that the corresponding .OVL file (ASYNC.OVL, X25EICON.OVL, or X25ATLAN.OVL) cannot be loaded.


To load this file, make sure the machine has MS-DOS extended memory available and the ASYNC.OVL, X25EICON.OVL, and X25ATLAN.OVL files are in the same directory as the EXTERNAL.EXE file.

NOTE: You should store these files on the computer's local disk drive and you should set the MS-DOS temporary (temp) workspace to the local drive.

Additional query words: 3.20

Keywords: KB104485