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Symptoms

Consider the following scenario:

  • You create a failover cluster among many nodes that are running Windows Server 2008 or Windows Server 2008 R2 with the Failover Cluster feature installed.

  • A cluster-aware application, such as a SQL Server 2012 AlwaysOn Availability Group, registers for multiple registry key change notifications when changes are made to the cluster.

  • There are some registry changes in the cluster. This is the expected behavior in a cluster that works correctly.

In this scenario, the Cluster service sends unnecessary notifications among cluster nodes. Specifically, each registry key change notification is sent to every cluster node by every other cluster node. The unnecessary propagation of registry notifications limits network bandwidth and is a serious issue in a large cluster environment.

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 one of the following operating systems:

  • Windows Server 2008 Service Pack 2 (SP2)

  • Windows Server 2008 R2 Service Pack 1 (SP1)

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 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

Registry information

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

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 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
    2.
    22xxx

    Windows Server 2008

    SP2

    LDR

  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxx version number.

  • 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

Clussvc.exe

6.0.6002.22712

2,352,640

07-Sep-2011

15:07

x86

Cluswmi.dll

6.0.6002.22712

165,888

07-Sep-2011

18:32

x86

Cluswmi.mof

Not applicable

68,218

07-Sep-2011

11:19

Not applicable

Cluswmiuninstall.mof

Not applicable

176

07-Sep-2011

11:19

Not applicable

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Clussvc.exe

6.0.6002.22712

3,890,176

07-Sep-2011

13:31

x64

Cluswmi.dll

6.0.6002.22712

281,088

07-Sep-2011

15:19

x64

Cluswmi.mof

Not applicable

68,218

07-Sep-2011

11:02

Not applicable

Cluswmiuninstall.mof

Not applicable

176

07-Sep-2011

11:02

Not applicable

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

File name

File version

File size

Date

Time

Platform

Clussvc.exe

6.0.6002.22712

6,516,224

07-Sep-2011

13:34

IA-64

Cluswmi.dll

6.0.6002.22712

500,224

07-Sep-2011

15:14

IA-64

Cluswmi.mof

Not applicable

68,218

07-Sep-2011

11:32

Not applicable

Cluswmiuninstall.mof

Not applicable

176

07-Sep-2011

11:32

Not applicable

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

    6.1.760
    1.
    17xxx

    Windows Server 2008 R2

    SP1

    GDR

    6.1.760
    1.
    21xxx

    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" 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 x64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Clussvc.exe

6.1.7601.17730

4,584,960

24-Nov-2011

07:11

x64

Clussvc.exe

6.1.7601.21867

4,605,440

28-Nov-2011

06:13

x64

Cluswmi.dll

6.1.7601.21867

542,208

28-Nov-2011

06:15

x64

Cluswmi.mof

Not Applicable

76,752

27-Nov-2011

23:56

Not Applicable

Cluswmiuninstall.mof

Not Applicable

176

27-Nov-2011

23:56

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Clussvc.exe

6.1.7601.17730

7,708,672

24-Nov-2011

05:36

IA-64

Clussvc.exe

6.1.7601.21867

7,746,048

28-Nov-2011

05:13

IA-64

Cluswmi.dll

6.1.7601.21867

887,296

28-Nov-2011

05:15

IA-64

Cluswmi.mof

Not Applicable

76,752

27-Nov-2011

23:44

Not Applicable

Cluswmiuninstall.mof

Not Applicable

176

27-Nov-2011

23:44

Not Applicable

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

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

17,294

Date (UTC)

08-Sep-2011

Time (UTC)

19:20

Platform

Not applicable

File name

X86_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.0.6002.22712_none_bc28f9beb7d5f78c.manifest

File version

Not applicable

File size

15,117

Date (UTC)

07-Sep-2011

Time (UTC)

19:24

Platform

Not applicable

File name

X86_microsoft-windows-f..overcluster-cluswmi_31bf3856ad364e35_6.0.6002.22712_none_bed6f302b61b9169.manifest

File version

Not applicable

File size

11,233

Date (UTC)

07-Sep-2011

Time (UTC)

19:20

Platform

Not applicable

File name

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

File name

Update.mum

File version

Not applicable

File size

17,454

Date (UTC)

08-Sep-2011

Time (UTC)

19:20

Platform

Not applicable

File name

Wow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.0.6002.22712_none_229c3f94a4942abd.manifest

File version

Not applicable

File size

4,510

Date (UTC)

07-Sep-2011

Time (UTC)

18:50

Platform

Not applicable

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

File name

Ia64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.0.6002.22712_none_bc2a9db4b7d40088.manifest

File version

Not applicable

File size

15,136

Date (UTC)

07-Sep-2011

Time (UTC)

15:33

Platform

Not applicable

File name

Ia64_microsoft-windows-f..overcluster-cluswmi_31bf3856ad364e35_6.0.6002.22712_none_bed896f8b6199a65.manifest

File version

Not applicable

File size

11,245

Date (UTC)

07-Sep-2011

Time (UTC)

15:32

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

4,807

Date (UTC)

08-Sep-2011

Time (UTC)

19:20

Platform

Not applicable

File name

Wow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.0.6002.22712_none_229c3f94a4942abd.manifest

File version

Not applicable

File size

4,510

Date (UTC)

07-Sep-2011

Time (UTC)

18:50

Platform

Not applicable

Additional file information for Windows Server 2008 R2

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

File name

Amd64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.17730_none_17ce1188b83f24b5.manifest

File version

Not Applicable

File size

7,438

Date (UTC)

24-Nov-2011

Time (UTC)

08:19

Platform

Not Applicable

File name

Amd64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21867_none_183e4095d16ec9b3.manifest

File version

Not Applicable

File size

7,438

Date (UTC)

28-Nov-2011

Time (UTC)

06:53

Platform

Not Applicable

File name

Amd64_microsoft-windows-f..overcluster-cluswmi_31bf3856ad364e35_6.1.7601.21867_none_1aec39d9cfb46390.manifest

File version

Not Applicable

File size

6,668

Date (UTC)

28-Nov-2011

Time (UTC)

06:51

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

17,202

Date (UTC)

28-Nov-2011

Time (UTC)

23:45

Platform

Not Applicable

File name

Wow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.17730_none_2222bbdaec9fe6b0.manifest

File version

Not Applicable

File size

4,604

Date (UTC)

24-Nov-2011

Time (UTC)

06:51

Platform

Not Applicable

File name

Wow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21867_none_2292eae805cf8bae.manifest

File version

Not Applicable

File size

4,604

Date (UTC)

28-Nov-2011

Time (UTC)

05:34

Platform

Not Applicable

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

File name

Ia64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.17730_none_bbb119faffdfbc7b.manifest

File version

Not Applicable

File size

7,436

Date (UTC)

24-Nov-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Ia64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21867_none_bc214908190f6179.manifest

File version

Not Applicable

File size

7,436

Date (UTC)

28-Nov-2011

Time (UTC)

06:48

Platform

Not Applicable

File name

Ia64_microsoft-windows-f..overcluster-cluswmi_31bf3856ad364e35_6.1.7601.21867_none_becf424c1754fb56.manifest

File version

Not Applicable

File size

6,666

Date (UTC)

28-Nov-2011

Time (UTC)

06:46

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

4,509

Date (UTC)

28-Nov-2011

Time (UTC)

23:45

Platform

Not Applicable

File name

Wow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.17730_none_2222bbdaec9fe6b0.manifest

File version

Not Applicable

File size

4,604

Date (UTC)

24-Nov-2011

Time (UTC)

06:51

Platform

Not Applicable

File name

Wow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21867_none_2292eae805cf8bae.manifest

File version

Not Applicable

File size

4,604

Date (UTC)

28-Nov-2011

Time (UTC)

05:34

Platform

Not Applicable

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