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A crash of the Microsoft Distributed Transaction Service (MSDTC) service process can cause the Microsoft COM+ Queued Component (QC)Listener to lose QC messages.
Even if a COM+ QC must be executed in a transaction because the COM+ Transaction property is set to required or to required new, the QC Listener reads QC messages in a non-transactional way when it cannot read the messages in a transactional way.
How to obtain the hotfix
This issue is fixed in the Windows 2000 Server COM+ 1.0 Hotfix Package 28. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
828748 FIX: Availability of Windows 2000 Post-Service Pack 4 COM+ 1.0 Hotfix Rollup Package 28
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section of this article.