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.
Before you apply this update, the release version of Hyper-V must be installed. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
950050 Description of the update for the release version of the Hyper-V technology for Windows Server 2008
You must restart the computer after you apply this update
Update replacement information
This update does not replace any other updates.
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 Server 2008 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" 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 x64-based versions of Windows Server 2008
The hotfix also contains the GDR version for all supported x64-based versions of Windows Server 2008
After you install this update, the Hyper-V VMMS certificate can be renewed automatically when it is expired.
To work around this issue, you can generate a new certificate. To do this, follow these steps:
Shut down or save all virtual machines.
Restart the Hyper-V VMMS.
Start the virtual machines.
Note Because the Hyper-V VMMS certificate is valid for one year, the update has to be applied to prevent this issue from occurring in the future.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
To determine the expiration date for the Hyper-V VMM service self-signed certificate, follow these steps:
Click Start , click Run , type mmc , and then click OK.
On the File menu, click Add/Remove Snap-in.
Click Certificates , and then click Add.
Click Service account , and then click Next.
Click Local Computer , and then click Next.
Click Hyper-V Virtual Machine Management , and then click Finish.
Click OK to close the Add/Remove Snap-in window.
Expand Certificates - Service , expand Vmms\Personal , and then click Certificates.
Double-click the VMM Service certificate, and then check the expiration date in the VMM Service certificate window.
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 x64-based versions of Windows Server 2008