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Q241525: Duplicate Transactional Messages Sent by MSMQ

Article: Q241525
Product(s): Microsoft Windows NT
Version(s): winnt:4.0,4.0 SP4,4.0 SP5
Operating System(s): 
Keyword(s): kbinterop kbWinNT4sp6fix
Last Modified: 20-MAY-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0, Terminal Server Edition 
- Microsoft Windows NT version 4.0 Option Pack 
- Microsoft Windows NT Server versions 4.0, 4.0 SP4, 4.0 SP5 
- Microsoft Windows NT Server, Enterprise Edition versions 4.0, 4.0 SP4, 4.0 SP5 
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SYMPTOMS
========

When you use Microsoft Message Queue Server (MSMQ) on your computer running
Windows NT 4.0, MSMQ can be configured to guarantee "only once" delivery of
transactional messages without duplicate messages for forty-five days. However,
it is possible, under certain conditions, to receive duplicate transactional
messages within a twenty-four hour time frame.

CAUSE
=====

This behavior may occur when the receiving computer is restarting while
transactional messages are being sent.

RESOLUTION
==========

Windows NT Server or Workstation 4.0
------------------------------------

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the
individual software update. For information on obtaining the latest service
pack, please go to:

- http://www.microsoft.com/Windows/ServicePacks/

-or-

- Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

For information on obtaining the individual software update, contact Microsoft
Product Support Services. For a complete list of Microsoft Product Support
Services phone numbers and information on support costs, please go to the
following address on the World Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS


Windows NT Server 4.0, Terminal Server Edition
----------------------------------------------

To resolve this problem, obtain the latest service pack for Windows NT Server
4.0, Terminal Server Edition. For additional information, please see the
following article in the Microsoft Knowledge Base:

  Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0 and Windows NT
Server 4.0, Terminal Server Edition.

This problem was first corrected in Windows NT Server 4.0 Service Pack 6 and
Windows NT Server 4.0, Terminal Server Edition Service Pack 6.

MORE INFORMATION
================

For additional information about message queuing, please visit the following
Microsoft Web site:

  http://www.microsoft.com/NTServer/appservice/exec/overview/MSMQ_Overview.asp

Additional query words:

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Keywords          : kbinterop kbWinNT4sp6fix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400sp5 kbWinNTSEnt400sp4 kbWinNTSEnt400 kbWinNTS400sp5 kbWinNTS400sp4 kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch kbWinNT400OptionPack
Version           : winnt:4.0,4.0 SP4,4.0 SP5
Issue type        : kbbug
Solution Type     : kbfix

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