Microsoft KB Archive/290196

= How to Troubleshoot &quot;STOP 0x0000003E MULTIPROCESSOR_CONFIGURATION_NOT_SUPPORTED&quot; Error Messages =

Article ID: 290196

Article Last Modified on 1/31/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Service Pack 2

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This article was previously published under Q290196



SUMMARY
When you are using a multiple-processor computer that is running Windows 2000, you may receive the following error message:

STOP 0x0000003E (Parameter1, Parameter2, Parameter3, Parameter4)

MULTIPROCESSOR_CONFIGURATION_NOT_SUPPORTED



MORE INFORMATION
The computer has multiple processors, but they are asymmetric in relation to one another. To be symmetric, all processors must be of the same type and level. For example, if you try to mix a Pentium-level processor with an 80486 processor causes this behavior. Additionally, on Intel-based computers, either all processors must have floating point capabilities, or none of the processors should have floating point capabilities.

For additional information about how to use CPUs with different stepping levels, click the article number below to view the article in the Microsoft Knowledge Base:

234556 Description of Windows 2000 Support for Multiple-CPU Computers with Mixed Stepping Levels

Keywords: kberrmsg kbinfo kbtshoot kbenv KB290196

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