Symptoms

On a Windows Server 2008-based computer, you use the Windows Network Load Balancing (NLB) Management Pack to monitor NLB clusters. After several days, the WMI Provider Host program (Wmiprvse.exe) may crash.

After the issue occurs, you can just ignore the report about the crash in the WMI host program because the process will restart with the next request by itself. However, this issue may affect other WMI queries running against the system at the same time that the crash happens.

Cause

The issue occurs because the NLB WMI provider leaks memory which results in the wmiprsve.exe process crash.

The extent of the memory leak and the frequency of the crash in the process depend on the specific execution of WMI query and the rate of invoking WMI queries to NLB.

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.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, you must have Windows Server 2008 installed. In additional, the NLB feature must be installed on this Windows Server 2008-based computer.

Restart requirement

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

If you applied the hotfix while this node was an active part of the NLB cluster, after you apply the hotfix and restart the cluster node, check that the service is running and that the service start type is set correctly. To do this, follow these steps:

  1. Start a command prompt as administrator.

  2. Type sc query wlbs, and confirm that the state is RUNNING. If it is not, start the service by running the following:

    net start wlbs

  3. Type sc qc wlbs and confirm that the start type is SYSTEM_START. If it is not, set it to system by running the following command.

    sc config wlbs start= systemNote There is a space before “system.”

  4. Open NLB Manager on the node, and then confirm that all nodes are converged. You might have to refresh the cluster state.

Note You should also follow these steps if the hotfix is uninstalled.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

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 Vista and Windows Server 2008 file information notes

The .manifest files and the .mum files that are installed in each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. These files and their associated .cat (security catalog) files are critical to maintaining the state of the updated component. The .cat files are signed with a Microsoft digital signature. The attributes of these security files are not listed.

For all supported x86-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Nlb-unattend.exe

6.0.6001.22320

37,888

02-Dec-2008

04:36

x86

Nlbcfg.dll

6.0.6001.22320

66,560

02-Dec-2008

04:36

x86

Nlbmigplugin.dll

6.0.6001.22320

135,680

02-Dec-2008

04:36

x86

Nlbmprov.dll

6.0.6001.22320

102,400

02-Dec-2008

04:36

x86

Nlbmprov.mof

Not Applicable

8,372

01-Dec-2008

23:52

Not Applicable

Nlbmprovuninstall.mof

Not Applicable

138

01-Dec-2008

23:52

Not Applicable

Nlbtrace.mof

Not Applicable

2,393

18-Dec-2007

21:11

Not Applicable

Wlbsctrl.dll

6.0.6001.22320

80,384

02-Dec-2008

04:36

x86

Wlbsprov.dll

6.0.6001.22320

147,456

02-Dec-2008

04:36

x86

Wlbsprov.mof

Not Applicable

131,044

01-Dec-2008

23:52

Not Applicable

Wlbsprovuninstall.mof

Not Applicable

138

01-Dec-2008

23:52

Not Applicable

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Nlb-unattend.exe

6.0.6001.22320

38,912

02-Dec-2008

05:50

x64

Nlbcfg.dll

6.0.6001.22320

78,848

02-Dec-2008

05:52

x64

Nlbmigplugin.dll

6.0.6001.22320

163,840

02-Dec-2008

05:52

x64

Nlbmprov.dll

6.0.6001.22320

122,368

02-Dec-2008

05:52

x64

Nlbmprov.mof

Not Applicable

8,372

02-Dec-2008

00:35

Not Applicable

Nlbmprovuninstall.mof

Not Applicable

138

02-Dec-2008

00:35

Not Applicable

Nlbtrace.mof

Not Applicable

2,393

18-Dec-2007

21:11

Not Applicable

Wlbsctrl.dll

6.0.6001.22320

93,184

02-Dec-2008

05:52

x64

Wlbsprov.dll

6.0.6001.22320

226,304

02-Dec-2008

05:52

x64

Wlbsprov.mof

Not Applicable

131,044

02-Dec-2008

00:35

Not Applicable

Wlbsprovuninstall.mof

Not Applicable

138

02-Dec-2008

00:35

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Nlb-unattend.exe

6.0.6001.22320

81,920

02-Dec-2008

05:36

IA-64

Nlbcfg.dll

6.0.6001.22320

172,544

02-Dec-2008

05:47

IA-64

Nlbmigplugin.dll

6.0.6001.22320

347,136

02-Dec-2008

05:47

IA-64

Nlbmprov.dll

6.0.6001.22320

274,432

02-Dec-2008

05:47

IA-64

Nlbmprov.mof

Not Applicable

8,372

02-Dec-2008

00:37

Not Applicable

Nlbmprovuninstall.mof

Not Applicable

138

02-Dec-2008

00:37

Not Applicable

Nlbtrace.mof

Not Applicable

2,393

18-Dec-2007

21:11

Not Applicable

Wlbsctrl.dll

6.0.6001.22320

204,288

02-Dec-2008

05:51

IA-64

Wlbsprov.dll

6.0.6001.22320

461,824

02-Dec-2008

05:51

IA-64

Wlbsprov.mof

Not Applicable

131,044

02-Dec-2008

00:37

Not Applicable

Wlbsprovuninstall.mof

Not Applicable

138

02-Dec-2008

00:37

Not Applicable

Status

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

References

For more information about WMI providers, visit the following Web site:

http://msdn.microsoft.com/en-us/library/aa394570.aspx For more information about management pack files, visit the following Microsoft Web site:

http://technet.microsoft.com/en-us/library/cc468592.aspx

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

Additional file information for Windows Server 2008

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

File name

Package_for_kb959493_sc_0~31bf3856ad364e35~x86~~6.0.2.0.mum

File version

Not Applicable

File size

1,423

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Package_for_kb959493_sc~31bf3856ad364e35~x86~~6.0.2.0.mum

File version

Not Applicable

File size

1,422

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Package_for_kb959493_server_0~31bf3856ad364e35~x86~~6.0.2.0.mum

File version

Not Applicable

File size

1,423

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Package_for_kb959493_server~31bf3856ad364e35~x86~~6.0.2.0.mum

File version

Not Applicable

File size

1,430

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

X86_e47bfb77aaa7709a3c399c4a2f21237e_31bf3856ad364e35_6.0.6001.22320_none_9c2ea2fa9ec3cb57.manifest

File version

Not Applicable

File size

713

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

X86_microsoft-windows-n..kloadbalancing-core_31bf3856ad364e35_6.0.6001.22320_none_14ebba8dea6cceb1.manifest

File version

Not Applicable

File size

30,460

Date (UTC)

02-Dec-2008

Time (UTC)

05:47

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

File name

Ia64_c0d61afd4b036cf061aa7e4849b33f42_31bf3856ad364e35_6.0.6001.22320_none_12e50a96d0d84e40.manifest

File version

Not Applicable

File size

715

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Ia64_microsoft-windows-n..kloadbalancing-core_31bf3856ad364e35_6.0.6001.22320_none_14ed5e83ea6ad7ad.manifest

File version

Not Applicable

File size

30,768

Date (UTC)

02-Dec-2008

Time (UTC)

07:13

File name

Package_for_kb959493_server_0~31bf3856ad364e35~ia64~~6.0.2.0.mum

File version

Not Applicable

File size

1,427

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Package_for_kb959493_server~31bf3856ad364e35~ia64~~6.0.2.0.mum

File version

Not Applicable

File size

1,434

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

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

File name

Amd64_beb7e0760133dc95651ba6c07e4d0f6a_31bf3856ad364e35_6.0.6001.22320_none_7972d973a5cdee9c.manifest

File version

Not Applicable

File size

717

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Amd64_microsoft-windows-n..kloadbalancing-core_31bf3856ad364e35_6.0.6001.22320_none_710a5611a2ca3fe7.manifest

File version

Not Applicable

File size

30,789

Date (UTC)

02-Dec-2008

Time (UTC)

06:44

File name

Package_for_kb959493_sc_0~31bf3856ad364e35~amd64~~6.0.2.0.mum

File version

Not Applicable

File size

1,431

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Package_for_kb959493_sc~31bf3856ad364e35~amd64~~6.0.2.0.mum

File version

Not Applicable

File size

1,430

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Package_for_kb959493_server_0~31bf3856ad364e35~amd64~~6.0.2.0.mum

File version

Not Applicable

File size

1,431

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

File name

Package_for_kb959493_server~31bf3856ad364e35~amd64~~6.0.2.0.mum

File version

Not Applicable

File size

1,438

Date (UTC)

02-Dec-2008

Time (UTC)

19:11

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