DOCUMENT:Q193707  02-MAY-1999  [exchange]
TITLE   :XADM: Error Message: Could not open the file named Mdbmsg.dll
PRODUCT :Microsoft Exchange
PROD/VER:WINDOWS:5.5
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When you upgrade from Exchange Server 5.5 to Exchange Server 5.5 Service Pack 1,
the following error message may appear:

   Could not open the file named <drive>:exchsrvr\res\mdbmsg.dll

   Abort Retry Fail

CAUSE
=====

The Mdbmsg.dll file is being held open by some process, usually the Event
Viewer.

WORKAROUND
==========

Close the process that is holding the Mdbmsg.dll file open and click Retry. The
Exchange 5.5 SP1 Setup will continue.

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Keywords          :  
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : WINDOWS:5.5
Issue type        : kbprb

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