Deadlock When the LogonUser and the LoadUserProfile Functions Are Run from Multiple Threads (821106)


The information in this article applies to:

  • Microsoft Windows 2000 Advanced Server SP3
  • Microsoft Windows 2000 Server SP3
  • Microsoft Windows 2000 Professional SP3
  • Microsoft Windows 2000 Datacenter Server SP3

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

Modification Type:MajorLast Reviewed:7/17/2003
Keywords:kbQFE kbWin2000preSP4Fix kbfix kbbug KB821106 kbAudITPRO
©2003 Microsoft Corporation. All rights reserved.