Microsoft KB Archive/839937

= The KeBugCheckEx function causes a system reset on multiprocessor Windows Server 2003-based computers =

Article ID: 839937

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise x64 Edition

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SYMPTOMS
If the KeBugcheckEx function runs on a multiprocessor Microsoft Windows Server 2003-based computer, the computer may experience a triple fault exception. This scenario forces a restart.



CAUSE
This problem occurs because machine check exceptions are delivered to multiple processors on the computer at the same time. When this problem occurs, the KeBugCheckEx function may be running on a secondary processor while another processor is performing a task, such as a memory dump. The result is a triple fault exception that forces an automatic reset of the computer.



RESOLUTION
To resolve this problem, apply the hotfix that is described in Knowledge Base 835768.

For additional information about how to obtain the hotfix to resolve this problem, click the following article number to view the article in the Microsoft Knowledge Base:

835768 A machine check error may occur without any noticeable symptoms in Windows Server 2003



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
This problem was discovered during the development and the machine check exception testing of the hotfix that was created for Knowledge Base article 835768.

Keywords: kbbug kbfix kbqfe kbwinserv2003presp1fix KB839937

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