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Article ID: 956697 - Last Review: November 22, 2010 - Revision: 1.2

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SYMPTOMS

Consider the following scenario:
  • In Windows Server 2008, "Microsoft Hyper-V VSS Writer" is not listed when you run the vssadmin list writers command.
  • When you perform a backup of the Hyper-V virtual machines, the following event is logged to the Hyper-V-VMMS event log:

    Log Name: Microsoft-Windows-Hyper-V-VMMS-Admin
    Source: Microsoft-Windows-Hyper-V-VMMS
    Event ID: 10107
    Description:
    An error occurred while identifying the Hyper-V VSS writer. Check for any corrupt or invalid configuration files and try again.

In this scenario, the backups of the virtual machines may be inconsistent because the Hyper-V VSS writer is not used during the backup job.

CAUSE

This problem occurs because of corrupted or invalid virtual machine configuration files.

RESOLUTION

Service Pack Information

To resolve this problem, obtain the latest service pack for Windows Server 2008. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
968849  (http://support.microsoft.com/kb/968849/ ) How to obtain the latest service pack for Windows Server 2008

Update information

The following file is available for download from the Microsoft Download Center:

Collapse this imageExpand this image
Download
Download the Update for Windows Server 2008 x64 Edition (KB956697) package now. (http://www.microsoft.com/downloads/details.aspx?FamilyId=5EB76BDA-8794-412A-9FD4-1BCCBBC34C82)

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591  (http://support.microsoft.com/kb/119591/ ) How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Release Date: September 9, 2008

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591  (http://support.microsoft.com/kb/119591/ ) How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

You must have Windows Server 2008 installed to apply this update.

Restart requirement

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

Update replacement information

This update does not replace any other updates.

File information

The English version of this update 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.
  • The binary files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.0.6000.16xxxWindows Server 2008 SP1SP1GDR
    6.0.6001.22xxxWindows Server 2008 SP1SP1LDR
For all supported 64-bit versions of Windows Server 2008
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File nameFile versionFile sizeDateTimePlatform
Vmms.exe6.0.6001.181253,871,23220-Aug-200804:01x64
Vmms.exe6.0.6001.222473,871,23220-Aug-200804:44x64

STATUS

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

MORE INFORMATION

After you apply this update, the following event will continue to be logged. However, you can safely ignore the event.

Log Name: Microsoft-Windows-Hyper-V-VMMS-Admin
Source: Microsoft-Windows-Hyper-V-VMMS
Event ID: 10107
Description:
An error occurred while identifying the Hyper-V VSS writer. Check for any corrupt or invalid configuration files and try again.

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/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 64-bit versions of Windows Server 2008
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File nameAmd64_f97e0aa14ea570b77b803a675103a80c_31bf3856ad364e35_6.0.6001.18125_none_0aca2a61230e33dd.manifest
File versionNot Applicable
File size703
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File nameAmd64_ffdaca8b2f859655546d39218a9d88b3_31bf3856ad364e35_6.0.6001.22247_none_543c9b8120756c63.manifest
File versionNot Applicable
File size703
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File nameAmd64_microsoft-hyper-v-vstack-vmms_31bf3856ad364e35_6.0.6001.18125_none_92a406a41755daae.manifest
File versionNot Applicable
File size249,723
Date (UTC)20-Aug-2008
Time (UTC)04:35
PlatformNot Applicable
File nameAmd64_microsoft-hyper-v-vstack-vmms_31bf3856ad364e35_6.0.6001.22247_none_931a042b3081e508.manifest
File versionNot Applicable
File size249,723
Date (UTC)20-Aug-2008
Time (UTC)05:27
PlatformNot Applicable
File namePackage_1_for_kb956697_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,847
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_1_for_kb956697~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size2,560
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_2_for_kb956697_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,847
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_2_for_kb956697~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size2,560
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_sc_0_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,505
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_sc_0~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,528
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_sc_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,411
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_sc~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,430
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_server_0_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,509
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_server_0~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,532
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_server_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,419
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File namePackage_for_kb956697_server~31bf3856ad364e35~amd64~~6.0.1.1.mum
File versionNot Applicable
File size1,438
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable
File nameUpdate-bf.mum
File versionNot Applicable
File size1,770
Date (UTC)21-Aug-2008
Time (UTC)00:51
PlatformNot Applicable

APPLIES TO
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
Keywords: 
kbhyperv kbexpertiseinter kbfix kbqfe KB956697
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