System Monitor shows only one active CPU on a 64-bit multiprocessor in Windows Server 2003

Support for Windows Server 2003 ended on July 14, 2015

Microsoft ended support for Windows Server 2003 on July 14, 2015. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article has been archived. It is offered "as is" and will no longer be updated.
Symptoms
When you use System Monitor to monitor the Processor object on a multiprocessor computer that is running a 64-bit version of Microsoft Windows Server 2003, System Monitor shows only one active processor. The processor that appears to be active is processor 0.
Cause
This problem occurs because a program calls the timeSetEvent() function and sets the uResolution parameter to a value that is less than 10 milliseconds.
Resolution
To resolve this problem, obtain the latest service pack for Microsoft Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
889100 How to obtain the latest service pack for Windows Server 2003
Workaround
To work around this problem, set the uResolution parameter in the timeSetEvent() function to a value of 10 milliseconds or more.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article. This problem was first corrected in Microsoft Windows Server 2003 Service Pack 1.
More information
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
SP sysmon
Properties

Article ID: 838987 - Last Review: 01/09/2015 13:22:00 - Revision: 4.0

  • Microsoft Windows Server 2003, Enterprise x64 Edition
  • kbnosurvey kbarchive kbwinxp64bit2003sp1fix atdownload kbpending kbbug kbfix kbwinserv2003presp1fix kbqfe kbhotfixserver KB838987
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