XADM: Error Message: An Unknown, Unexpected Error Has Occurred
ID: Q174172
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The information in this article applies to:
- Microsoft Exchange Server, versions 5.0, 5.5
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SYMPTOMS
========
When you start the Exchange Administrator program, the following error
message may appear:
An unknown, unexpected error has occurred.
MAPI or an unspecified service provider
ID no. 0000000-0000-00000000
CAUSE
=====
This may be due to an incorrect version of Riched32.dll or Mapi32.dll in
the system32 directory on this computer. This problem may occur if the
system has been downgraded to a previous version of Exchange. Setup will
not overwrite newer files, and because the newer DLL file is not backward
compatible, this error will occur.
RESOLUTION
==========
To resolve this problem, do the following:
1. Rename Riched32.dll and Mapi32.dll in the winnt\system32 directory.
2. Run Exchange Server Setup and choose Reinstall. If any Exchange service
Keywords : kbusage XADM
Version : WinNT:5.0
Platform : WINDOWS
Issue type :
Last Reviewed: July 15, 1998