Microsoft KB Archive/241525

= Duplicate Transactional Messages Sent by MSMQ =

Article ID: 241525

Article Last Modified on 8/20/2007

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT version 4.0 Option Pack
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5
 * Microsoft Windows NT Server 4.0 Enterprise Edition
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5

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This article was previously published under Q241525



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.



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-


 * 152734how 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/directory/overview.asp

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, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack



STATUS
Microsoft has confirmed that this is 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/windows/windows2000/en/advanced/help/sag_MSMQconcepts_intro.htm

Keywords: kbbug kbfix kbinterop KB241525

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