FIX: New STA Object Cannot Join Caller's STA If the Caller Is Not Configured

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Article ID: 298127 - View products that this article applies to.
This article was previously published under Q298127
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If a COM+ component (Component1) is marked as single-threaded apartment (STA), when Component1 is instantiated by an STA thread that is not from the COM+ STA thread pool, Component1 is not created in the caller's thread. In other words, Component1 is bound with one of the threads from the COM+ STA thread pool.


When the object from Component1 is instantiated from an STA, the apartment of the caller's thread is only checked if it is in the COM+ STA thread pool. If possible, create all COM+ objects that live on STA threads in the caller's thread. This bug violates this COM+ rule.


To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
This fix is included with the fixes that are described in the following Microsoft Knowledge Base article:
299407 INFO: Post Windows 2000 Service Pack 2 COM+ Rollup Hotfix 13 Is Available


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.


Steps to Reproduce Behavior

  1. Call the CoInitialize function on your main thread into the STA.
  2. Call the CoCreate function on a configured STA component. Note that CoCreate does not run on the thread that you created.


Article ID: 298127 - Last Review: October 23, 2013 - Revision: 2.1
  • Microsoft COM+ 1.0, when used with:
    • Microsoft Windows 2000 Service Pack 2
kbnosurvey kbarchive kbbug kbfix kbwin2000presp3fix kbwin2000sp3fix KB298127

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