A memory leak occurs in Svchost.exe when you apply or update Group Policy preference settings in Windows Server 2008

Symptoms

You apply or update some Group Policy preference settings on a computer that is running Windows Server 2008. However, you find that the memory usage of an instance of the Svchost.exe process keeps increasing. After a while, some applications or services that are running on the computer stop working.

Notes

  • The Group Policy client service runs in an instance of the Svchost.exe process.

  • If you use Performance Monitor to monitor the memory usage of the Svchost.exe process when this issue occurs, you find that the value of the Private Bytes counter keeps increasing.

Cause

This issue occurs because the allocated memory for the Svchost.exe process is not released when Group Policy preference settings are applied or updated.

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:

http://support.microsoft.com/contactus/?ws=supportNote 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 Server 2008 or Windows Server 2008 Service Pack 2 (SP2).

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement



You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global 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 Server 2008 file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.0.600
    1.
    22xxx

    Windows Server 2008

    SP1

    LDR

    6.0.600
    2.
    22xxx

    Windows Server 2008

    SP2

    LDR

  • Service Pack 1 is integrated into the release version of Windows Server 2008.

  • 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" section. MUM files 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 Server 2008

File name

File version

File size

Date

Time

Platform

Gpprefcl.dll

6.0.6001.22770

647,168

30-Sep-2010

14:53

x86

Gpprefcl.dll

6.0.6002.22499

647,168

06-Oct-2010

16:31

x86

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Gpprefcl.dll

6.0.6001.22770

846,336

30-Sep-2010

15:39

x64

Gpprefcl.dll

6.0.6002.22499

846,336

06-Oct-2010

16:52

x64

Gpprefcl.dll

6.0.6001.22770

647,168

30-Sep-2010

14:53

x86

Gpprefcl.dll

6.0.6002.22499

647,168

06-Oct-2010

16:31

x86

For all supported IA-64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Gpprefcl.dll

6.0.6001.22770

1,672,704

30-Sep-2010

14:57

IA-64

Gpprefcl.dll

6.0.6002.22499

1,672,704

06-Oct-2010

16:16

IA-64

Gpprefcl.dll

6.0.6001.22770

647,168

30-Sep-2010

14:53

x86

Gpprefcl.dll

6.0.6002.22499

647,168

06-Oct-2010

16:31

x86

Status

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 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

For more information about handle leak occurs in Svchost.exe, click the following article number to view the article in the Microsoft Knowledge Base:

958089 A Svchost.exe handle leak occurs in Windows Server 2008 when Group Policy preference settings are applied

Additional file information

Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008

File name

Update.mum

File version

Not applicable

File size

2,243

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

X86_8140d17b1260873f09e3807305bf10af_31bf3856ad364e35_6.0.6001.22770_none_992cfe47d64dbd20.manifest

File version

Not applicable

File size

711

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

X86_f893c0f94ed3d1b8af5ed4cb9350764d_31bf3856ad364e35_6.0.6002.22499_none_962e3173df463546.manifest

File version

Not applicable

File size

711

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

X86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6001.22770_none_37872dae6252462d.manifest

File version

Not applicable

File size

106,474

Date (UTC)

30-Sep-2010

Time (UTC)

15:10

Platform

Not applicable

File name

X86_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22499_none_396102585f80b742.manifest

File version

Not applicable

File size

106,474

Date (UTC)

06-Oct-2010

Time (UTC)

16:55

Platform

Not applicable

Additional files for all supported x64-based versions of Windows Server 2008

File name

Amd64_ed59630d1f34411758f1477930988f6b_31bf3856ad364e35_6.0.6001.22770_none_0c285fe6591860c4.manifest

File version

Not applicable

File size

1,072

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

Amd64_fd269708943d4f69b68b179c63f614c6_31bf3856ad364e35_6.0.6002.22499_none_148ee549aae3ef51.manifest

File version

Not applicable

File size

1,072

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

Amd64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6001.22770_none_93a5c9321aafb763.manifest

File version

Not applicable

File size

106,510

Date (UTC)

30-Sep-2010

Time (UTC)

15:56

Platform

Not applicable

File name

Amd64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22499_none_957f9ddc17de2878.manifest

File version

Not applicable

File size

106,510

Date (UTC)

06-Oct-2010

Time (UTC)

17:11

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,259

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

Wow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6001.22770_none_9dfa73844f10795e.manifest

File version

Not applicable

File size

66,987

Date (UTC)

30-Sep-2010

Time (UTC)

15:01

Platform

Not applicable

File name

Wow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22499_none_9fd4482e4c3eea73.manifest

File version

Not applicable

File size

66,987

Date (UTC)

06-Oct-2010

Time (UTC)

16:39

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008

File name

Ia64_3bf4a9dd88bd81770e751c1c369991d9_31bf3856ad364e35_6.0.6001.22770_none_6c89d98ba5e5b307.manifest

File version

Not applicable

File size

1,070

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

Ia64_f9ea2f871d09da8432088ef7d59fb014_31bf3856ad364e35_6.0.6002.22499_none_5a9531f974f7c46a.manifest

File version

Not applicable

File size

1,070

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

Ia64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6001.22770_none_3788d1a462504f29.manifest

File version

Not applicable

File size

106,492

Date (UTC)

30-Sep-2010

Time (UTC)

15:12

Platform

Not applicable

File name

Ia64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22499_none_3962a64e5f7ec03e.manifest

File version

Not applicable

File size

106,492

Date (UTC)

06-Oct-2010

Time (UTC)

16:30

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,249

Date (UTC)

06-Oct-2010

Time (UTC)

22:57

Platform

Not applicable

File name

Wow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6001.22770_none_9dfa73844f10795e.manifest

File version

Not applicable

File size

66,987

Date (UTC)

30-Sep-2010

Time (UTC)

15:01

Platform

Not applicable

File name

Wow64_microsoft-windows-g..ppolicy-policymaker_31bf3856ad364e35_6.0.6002.22499_none_9fd4482e4c3eea73.manifest

File version

Not applicable

File size

66,987

Date (UTC)

06-Oct-2010

Time (UTC)

16:39

Platform

Not applicable

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