Error message when you try to open the WMI MMC snap-in by using the "Wmimgmt.msc" command on a Microsoft Windows XP-based computer: "MMC has detected an error in a snap-in"

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On a Microsoft Windows XP-based computer, you receive the following error message when you try to open the Windows Management Instrumentation (WMI) Microsoft Management Console (MMC) snap-in:
MMC has detected an error in a snap-in. It is recommended that you shut down and restart MMC
Then, you can select from among the following three options:
  • Report this error to Microsoft, and then shut down MMC
  • Continue running and ignore errors with this snap-in for the rest of the session
  • Continue running and always ignore errors with this snap-in, regardless of user or session
If you select the second option or the third option, the WMI MMC snap-in opens.

This problem occurs if the following conditions are true:
  • You try to open the WMI MMC snap-in by using the Wmimgmt.msc command
  • MMC 3.0 is installed on the computer
MMC 3.0 introduces new memory-checking logic that checks NULL pointer references. However, the WMI MMC snap-in tries to reference a NULL pointer.

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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, contact 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 installed on the computer. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
322389 How to obtain the latest Windows XP service pack

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 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.
File nameFile versionFile sizeDateTimePlatform
To work around this problem, follow these steps to open the WMI MMC snap-in:
  1. Click Start, click Run, type mmc, and then click OK.
  2. On the File menu, click Add/Remove Snap-in.
  3. In the Add/Remove Snap-in dialog box, click Add.
  4. In the Available standalone snap-ins list, select WMI Control, and then click OK.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about how to obtain Microsoft Management Console 3.0, click the following article number to view the article in the Microsoft Knowledge Base:
907265 MMC 3.0 update is available for Windows Server 2003 and for Windows XP

For more information about software update terminology, 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
WMI snapin av

Article ID: 915843 - Last Review: 12/09/2015 04:56:44 - Revision: 3.0

Microsoft Windows XP Professional, Microsoft Windows XP Home Edition

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