FIX: Memory leak in WmiPrvSe.exe when you run a script to connect to the WMI WebAdministration namespace in Windows 7, in Windows Vista, in Windows Server 2008 or in Windows Server 2008 R2

Applies To
Windows Vista Windows 7 Windows Server 2008 Windows Server 2008 R2 Windows Server 2008 R2 Service Pack 1

Symptoms

Consider the following scenario:

  • You install Internet Information Services (IIS) 7.5 on a computer that is running one of the following operating systems:

    • Windows Vista
    • Windows Server 2008
    • Windows 7
    • Windows Server 2008 R2
  • You run a Windows script to connect to the Windows Management Instrumentation (WMI) WebAdministration namespace.
    For example, you run the following VBScript script:

    Set oIIS = GetObject("winmgmts:root\WebAdministration")
    Set oSite = oIIS.Get("Site.Name='Default Web Site'")            
    WScript.Echo "Retrieved an instance of Site "         
    WScript.Echo "        Name: " & oSite.Name
    WScript.Echo "        ID:   " & oSite.ID
    Set objInParam = oSite.Methods_("GetState"). _
        inParameters.SpawnInstance_()
    For i = 0 to 10000
       Set objOutParams = oIIS.ExecMethod("Site.Name='Default Web Site'", "GetState", objInParam)
       Wscript.Echo "Out Parameters: "
       Wscript.Echo "ReturnValue: " & objOutParams.ReturnValue
       WScript.Echo "LoopCount : " & i
       objOutParams = NIL
       Wscript.Echo "NIL is " & objOutParams
    
    Next
    oSite.Stop
    

In this scenario, a memory leak may occur in the WmiPrvSe.exe process.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that 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 website:

http:⁠//support.microsoft.com/contactus/?ws=support 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 have IIS 7.5 installed, with the IIS Management Scripts and Tools module installed, on a computer that is running one of the following operating systems:

  • Windows Vista Service Pack 2 (SP2)
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)

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

935791 How to obtain the latest Windows Vista service pack

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

For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Restart requirement

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

Hotfix replacement information

 This hotfix does not replace a previously released hotfix.

File Information

Windows Vista and 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
    7.0.600
    2.
    22xxx
    Windows Vista and Windows Server 2008 SP2 LDR
  • 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 and for Windows Vista" 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 and of Windows Vista

File name File version File size Date Time Platform
Webadministration.mof Not Applicable 365,274 01-Feb-2012 11:33 Not Applicable
Wmi-appserver.dll 7.0.6002.22789 244,736 01-Feb-2012 14:49 x86

For all supported x64-based versions of Windows Server 2008 and of Windows Vista

File name File version File size Date Time Platform
Webadministration.mof Not Applicable 365,274 01-Feb-2012 11:35 Not Applicable
Wmi-appserver.dll 7.0.6002.22789 382,976 01-Feb-2012 15:29 x64
Webadministration.mof Not Applicable 365,274 01-Feb-2012 11:33 Not Applicable
Wmi-appserver.dll 7.0.6002.22789 244,736 01-Feb-2012 14:49 x86

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

File name File version File size Date Time Platform
Webadministration.mof Not Applicable 365,274 01-Feb-2012 11:51 Not Applicable
Wmi-appserver.dll 7.0.6002.22789 768,512 01-Feb-2012 14:47 IA-64
Webadministration.mof Not Applicable 365,274 01-Feb-2012 11:33 Not Applicable
Wmi-appserver.dll 7.0.6002.22789 244,736 01-Feb-2012 14:49 x86

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 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
    7.5.760
    0.
    20xxx
    Windows 7 and Windows Server 2008 R2 RTM LDR
    7.5.760
    1.
    21xxx
    Windows 7 and Windows Server 2008 R2 SP1 LDR
  • 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 name File version File size Date Time Platform
Wmi-appserver.dll 7.5.7600.20916 247,296 05-Mar-2011 05:54 x86
Wmi-appserver.dll 7.5.7601.21675 247,296 05-Mar-2011 05:27 x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name File version File size Date Time Platform
Wmi-appserver.dll 7.5.7600.20916 387,072 05-Mar-2011 06:28 x64
Wmi-appserver.dll 7.5.7601.21675 387,072 05-Mar-2011 06:17 x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name File version File size Date Time Platform
Wmi-appserver.dll 7.5.7600.20916 779,264 05-Mar-2011 05:22 IA-64
Wmi-appserver.dll 7.5.7601.21675 779,264 05-Mar-2011 05:16 IA-64

              

Status

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

Workaround

To work around this issue, terminate the WmiPrvSe.exe process, and then restart it.

More Information

For more information about how to access WMI namespaces, visit the following MSDN website:

How to access WMI namespaces

Additional file information

Additional file information for Windows Vista and for Windows Server 2008

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

File name Update.mum
File version Not Applicable
File size 3,026
Date (UTC) 01-Feb-2012
Time (UTC) 16:53
Platform Not Applicable
File name X86_892952c282c1d53a86a921117229874b_31bf3856ad364e35_6.0.6002.22789_none_131156bb8e33d316.manifest
File version Not Applicable
File size 716
Date (UTC) 01-Feb-2012
Time (UTC) 16:53
Platform Not Applicable
File name X86_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.0.6002.22789_none_04904f1b845a457f.manifest
File version Not Applicable
File size 55,892
Date (UTC) 01-Feb-2012
Time (UTC) 15:30
Platform Not Applicable

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

File name Amd64_7d7891c73028fc6622d8117e5e81e912_31bf3856ad364e35_6.0.6002.22789_none_db48f5651353b1e3.manifest
File version Not Applicable
File size 1,082
Date (UTC) 01-Feb-2012
Time (UTC) 16:53
Platform Not Applicable
File name Amd64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.0.6002.22789_none_60aeea9f3cb7b6b5.manifest
File version Not Applicable
File size 55,918
Date (UTC) 01-Feb-2012
Time (UTC) 15:47
Platform Not Applicable
File name Update.mum
File version Not Applicable
File size 3,050
Date (UTC) 01-Feb-2012
Time (UTC) 16:53
Platform Not Applicable
File name Wow64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.0.6002.22789_none_6b0394f1711878b0.manifest
File version Not Applicable
File size 52,519
Date (UTC) 01-Feb-2012
Time (UTC) 15:14
Platform Not Applicable

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

File name Ia64_d8bf2f748ecdfbfda2d5e5b51aa3bea3_31bf3856ad364e35_6.0.6002.22789_none_07de1ccb7da6d7cc.manifest
File version Not Applicable
File size 1,080
Date (UTC) 01-Feb-2012
Time (UTC) 16:53
Platform Not Applicable
File name Ia64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.0.6002.22789_none_0491f31184584e7b.manifest
File version Not Applicable
File size 55,905
Date (UTC) 01-Feb-2012
Time (UTC) 15:17
Platform Not Applicable
File name Update.mum
File version Not Applicable
File size 1,575
Date (UTC) 01-Feb-2012
Time (UTC) 16:53
Platform Not Applicable
File name Wow64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.0.6002.22789_none_6b0394f1711878b0.manifest
File version Not Applicable
File size 52,519
Date (UTC) 01-Feb-2012
Time (UTC) 15:14
Platform Not Applicable

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

Additional files for all supported x86-based versions of Windows 7

File name Update.mum
File version Not Applicable
File size 2,270
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name X86_06facec1a51198b0a789f2ede983b804_31bf3856ad364e35_6.1.7600.20916_none_16f49d4302392790.manifest
File version Not Applicable
File size 716
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name X86_1284bd7c5c796593f91c58dddd47e251_31bf3856ad364e35_6.1.7601.21675_none_4997a96df3797143.manifest
File version Not Applicable
File size 716
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name X86_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7600.20916_none_031a5842e8152359.manifest
File version Not Applicable
File size 27,757
Date (UTC) 05-Mar-2011
Time (UTC) 06:16
Platform Not Applicable
File name X86_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7601.21675_none_04bed390e56d206d.manifest
File version Not Applicable
File size 27,757
Date (UTC) 05-Mar-2011
Time (UTC) 05:55
Platform Not Applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name Amd64_9c04c72d46bf037685c2aa3cdae1b829_31bf3856ad364e35_6.1.7600.20916_none_2de686ffa61e8ee3.manifest
File version Not Applicable
File size 1,082
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name Amd64_c1dde39cbe56b45db44bf0081bb63ae2_31bf3856ad364e35_6.1.7601.21675_none_3021c071024f36b2.manifest
File version Not Applicable
File size 1,082
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name Amd64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7600.20916_none_5f38f3c6a072948f.manifest
File version Not Applicable
File size 27,763
Date (UTC) 05-Mar-2011
Time (UTC) 07:21
Platform Not Applicable
File name Amd64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7601.21675_none_60dd6f149dca91a3.manifest
File version Not Applicable
File size 27,763
Date (UTC) 05-Mar-2011
Time (UTC) 06:48
Platform Not Applicable
File name Update.mum
File version Not Applicable
File size 2,702
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name Wow64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7600.20916_none_698d9e18d4d3568a.manifest
File version Not Applicable
File size 27,323
Date (UTC) 05-Mar-2011
Time (UTC) 06:09
Platform Not Applicable
File name Wow64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7601.21675_none_6b321966d22b539e.manifest
File version Not Applicable
File size 27,323
Date (UTC) 05-Mar-2011
Time (UTC) 05:42
Platform Not Applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name Ia64_86e3a8c28b8f18a48c352636a9b7539b_31bf3856ad364e35_6.1.7600.20916_none_a204a0b4d96a5e45.manifest
File version Not Applicable
File size 1,080
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name Ia64_ccc411aef1bff42674863ac2893a8cc8_31bf3856ad364e35_6.1.7601.21675_none_084fcf777510377a.manifest
File version Not Applicable
File size 1,080
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name Ia64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7600.20916_none_031bfc38e8132c55.manifest
File version Not Applicable
File size 27,760
Date (UTC) 05-Mar-2011
Time (UTC) 07:15
Platform Not Applicable
File name Ia64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7601.21675_none_04c07786e56b2969.manifest
File version Not Applicable
File size 27,760
Date (UTC) 05-Mar-2011
Time (UTC) 06:43
Platform Not Applicable
File name Update.mum
File version Not Applicable
File size 1,931
Date (UTC) 05-Mar-2011
Time (UTC) 14:59
Platform Not Applicable
File name Wow64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7600.20916_none_698d9e18d4d3568a.manifest
File version Not Applicable
File size 27,323
Date (UTC) 05-Mar-2011
Time (UTC) 06:09
Platform Not Applicable
File name Wow64_microsoft-windows-i..ementscriptingtools_31bf3856ad364e35_6.1.7601.21675_none_6b321966d22b539e.manifest
File version Not Applicable
File size 27,323
Date (UTC) 05-Mar-2011
Time (UTC) 05:42
Platform Not Applicable