Microsoft KB Archive/275168

= FIX: Simultaneous Calls to CoCreateInstance Are Blocked in Windows 2000 =

Article ID: 275168

Article Last Modified on 2/23/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q275168



SYMPTOMS
When a COM server object is registered as single use and is also using the single threaded apartment model, attempts by a client to create a new instance may get delayed.



CAUSE
Windows 2000 sends a create instance request to a previously created instance of the server, even though it was created as single use. If the server is busy (out of its message loop) it could cause a delay.



RESOLUTION
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



STATUS
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 2.

Keywords: kbbug kbfix kbwin2000presp2fix KB275168

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