The Win32_Processor class returns the incorrect Name property for the processor in a Windows XP-based computer that has an Intel Celeron processor installed

Support for Windows XP has ended

Microsoft ended support for Windows XP on April 8, 2014. 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This article has been archived.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.
Typically, a program can use the Win32_Processor Windows Management Instrumentation (WMI) class in the root\cimv2 namespace to determine the kind of processor that is installed in a computer. However, on a Windows XP-based computer that has an Intel Celeron processor installed, the Name property is not identified correctly. In this situation, the name of the processor that the Win32_Processor class returns differs from the name that is shown in Device Manager. Specifically, the Win32_Processor class shows the name as Intel Pentium II.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


To apply this hotfix, you must have Windows XP Service Pack 2 (SP2) or Windows XP Service Pack 3 (SP3) installed.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows XP with SP2, x86-based versions
File nameFile versionFile sizeDateTimePlatform
Windows XP with SP3, x86-based versions
File nameFile versionFile sizeDateTimePlatform
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
For more information about the Win32_Processor class, visit the following Microsoft Web site:For more 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

Steps to reproduce the problem

  1. Click Start, click Run, type wbemtest.exe in the Open box, and then press ENTER.
  2. Click Connect.
  3. In Namespace box, type root\cimv2, and then click Connect.
  4. Click Enum Instances.
  5. In the Enter superclass name box, type win32_processor, and then press ENTER.
  6. Double-click the first object that is returned in the query result.
  7. Verify the value of the Name property that appears in the Properties box. The name of the processor differs from the name that is shown in Device Manager.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Article ID: 946554 - Last Review: 01/16/2015 10:00:47 - Revision: 3.0

  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
  • kbnosurvey kbarchive kbautohotfix kbexpertiseadvanced kbfix kbqfe kbhotfixserver KB946554