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:
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 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:Download the Update for Windows Server 2008 x64 Edition (KB956697) package now. 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 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 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:
Version
Product
Milestone
Service branch
6.0.6000.16xxx
Windows Server 2008 SP1
SP1
GDR
6.0.6001.22xxx
Windows Server 2008 SP1
SP1
LDR
For all supported 64-bit versions of Windows Server 2008
File name |
File version |
File size |
Date |
Time |
Platform |
---|---|---|---|---|---|
Vmms.exe |
6.0.6001.18125 |
3,871,232 |
20-Aug-2008 |
04:01 |
x64 |
Vmms.exe |
6.0.6001.22247 |
3,871,232 |
20-Aug-2008 |
04:44 |
x64 |
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.
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 64-bit versions of Windows Server 2008
File name |
Amd64_f97e0aa14ea570b77b803a675103a80c_31bf3856ad364e35_6.0.6001.18125_none_0aca2a61230e33dd.manifest |
File version |
Not Applicable |
File size |
703 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Amd64_ffdaca8b2f859655546d39218a9d88b3_31bf3856ad364e35_6.0.6001.22247_none_543c9b8120756c63.manifest |
File version |
Not Applicable |
File size |
703 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Amd64_microsoft-hyper-v-vstack-vmms_31bf3856ad364e35_6.0.6001.18125_none_92a406a41755daae.manifest |
File version |
Not Applicable |
File size |
249,723 |
Date (UTC) |
20-Aug-2008 |
Time (UTC) |
04:35 |
Platform |
Not Applicable |
File name |
Amd64_microsoft-hyper-v-vstack-vmms_31bf3856ad364e35_6.0.6001.22247_none_931a042b3081e508.manifest |
File version |
Not Applicable |
File size |
249,723 |
Date (UTC) |
20-Aug-2008 |
Time (UTC) |
05:27 |
Platform |
Not Applicable |
File name |
Package_1_for_kb956697_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,847 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_1_for_kb956697~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
2,560 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_2_for_kb956697_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,847 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_2_for_kb956697~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
2,560 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_sc_0_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,505 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_sc_0~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,528 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_sc_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,411 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_sc~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,430 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_server_0_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,509 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_server_0~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,532 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_server_bf~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,419 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Package_for_kb956697_server~31bf3856ad364e35~amd64~~6.0.1.1.mum |
File version |
Not Applicable |
File size |
1,438 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |
File name |
Update-bf.mum |
File version |
Not Applicable |
File size |
1,770 |
Date (UTC) |
21-Aug-2008 |
Time (UTC) |
00:51 |
Platform |
Not Applicable |