Microsoft KB Archive/821106

= Deadlock When the LogonUser and the LoadUserProfile Functions Are Run from Multiple Threads =

Article ID: 821106

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Service Pack 3

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SYMPTOMS
When you have a program that runs the LogonUser and the LoadUserProfile functions in multiple threads or in multiple processes, the UnloadUSerProfile function may experience a deadlock where it cannot unload the user profile.



CAUSE
This issue occurs because the thread synchronization object (mutex) does not correctly handle simultaneous logons of the same user account.



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.



MORE INFORMATION
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

Keywords: kbbug kbfix kbwin2000presp4fix kbqfe KB821106

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