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The "Win32_Service" WMI class leaks memory in Windows Server 2008 R2 and in Windows 7


Symptoms

Consider the following scenario:
  • You have a computer that is running Windows Server 2008 R2 or Windows 7.
  • An application or a service uses the Win32_Service Windows Management Instrumentation (WMI) class to query some service information frequently.
In this scenario, the memory usage of the Wmiprvse.exe process keeps increasing, and the system performance decreases. After a while, the system resources may be exhausted. Therefore, the applications or services that are running on the computer may stop working.

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Cause

This issue occurs because some allocated memory is not freed when you use the Win32_Service WMI class to query some service information.

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Resolution

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 the problem described in this article. 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.

Prerequisites

To apply this hotfix, you must be running Windows 7 or Windows Server 2008 R2.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
File nameFile versionFile sizeDateTimePlatform
Cimwin32.dll6.1.7600.206831,340,92803-Apr-201007:57x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Cimwin32.dll6.1.7600.206832,055,16803-Apr-201007:30x64
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Cimwin32.dll6.1.7600.206834,279,80803-Apr-201005:49IA-64

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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More Information

More information about the Win32_Service class, visit the following Microsoft Web site:
General information about the "Win32_Service" class
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

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File nameUpdate.mum
File versionNot Applicable
File size1,618
Date (UTC)04-Apr-2010
Time (UTC)09:35
File nameX86_95da8f7ab7af2c2510b2afb1afbdf646_31bf3856ad364e35_6.1.7600.20683_none_c478db6c920ad15f.manifest
File versionNot Applicable
File size719
Date (UTC)04-Apr-2010
Time (UTC)09:35
File nameX86_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7600.20683_none_d008e7578082c860.manifest
File versionNot Applicable
File size5,224
Date (UTC)03-Apr-2010
Time (UTC)08:30
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameAmd64_5628fe11ac6c8448683a8ee03d7453f1_31bf3856ad364e35_6.1.7600.20683_none_d2d27d61538808a8.manifest
File versionNot Applicable
File size723
Date (UTC)04-Apr-2010
Time (UTC)09:35
File nameAmd64_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7600.20683_none_2c2782db38e03996.manifest
File versionNot Applicable
File size5,228
Date (UTC)03-Apr-2010
Time (UTC)09:31
File nameUpdate.mum
File versionNot Applicable
File size1,850
Date (UTC)04-Apr-2010
Time (UTC)09:35
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_29b7e4ed610d7351356872a91c830a8b_31bf3856ad364e35_6.1.7600.20683_none_bd34cf4385c389ca.manifest
File versionNot Applicable
File size721
Date (UTC)04-Apr-2010
Time (UTC)09:35
File nameIa64_microsoft-windows-w..ovider-cimwin32-dll_31bf3856ad364e35_6.1.7600.20683_none_d00a8b4d8080d15c.manifest
File versionNot Applicable
File size5,226
Date (UTC)03-Apr-2010
Time (UTC)09:24
File nameUpdate.mum
File versionNot Applicable
File size1,684
Date (UTC)04-Apr-2010
Time (UTC)09:35

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Keywords: kbqfe, kbhotfixserver, kbsurveynew, kbautohotfix, kbexpertiseinter, kbexpertiseadvanced, kbbug, kbfix, kb

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Article Info
Article ID : 981314
Revision : 3
Created on : 4/20/2018
Published on : 4/20/2018
Exists online : False
Views : 165