KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q163512: Err. Msg.: The Mapi Spooler Has Shut Down Unexpectedly

Article: Q163512
Product(s): Microsoft Windows NT
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbnetworkkbbuglist kbfixlist
Last Modified: 10-AUG-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows NT Workstation version 4.0 
- Microsoft Windows NT Server version 4.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

When you use the Windows Messaging client included with Windows NT 4.0 Server or
Workstation to send an attached file via Internet email through a POP3 mail
server, you may receive the following error message:

  Microsoft Windows Messaging Subsystem:
  The MAPI Spooler has shut down unexpectedly. Close all mail-enabled
  applications before attempting to log on again.

After shutting down and restarting the Exchange client, you receive the same
message.

CAUSE
=====

This error is caused when you send an attached file that has no extension on the
file name. This causes the MAPI spooler to access violate when it attempts to
send the file over Internet email. This problem does not occur when you use
Exchange servers as your mail server, only when using a POP3/SMTP mail server.

When the error occurs, the mail message does not leave the Outbox so every time
the client starts, it tries to send the message, causing the MAPI spooler to
access violate again.


RESOLUTION
==========

Once you have encountered this error, the only way to stop it is to install the
fix mentioned below or to delete the mailbox.

STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Windows NT version
4.0. This problem was corrected in the latest Microsoft Windows NT 4.0 U.S.
Service Pack. For information on obtaining the service pack, query on the
following word in the Microsoft Knowledge Base (without the spaces):

  S E R V P A C K


Additional query words: 4.00 prodnt

======================================================================
Keywords          : kbnetwork kbbuglist kbfixlist
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : winnt:4.0
Issue type        : kbbug

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.