When you remove a virtual hard disk from a virtual machine in System Center Virtual Machine Manager 2008 R2, the .vhd file on the Hyper-V server is deleted without warning


In Microsoft System Center Virtual Machine Manager 2008 R2, you remove a virtual hard disk (VHD) from a virtual machine. You expect that the .vhd file is detached from the virtual machine. However, the .vhd file is actually deleted on the Hyper-V server.


A hotfix is available that fixes this problem. To obtain this hotfix, visit the Microsoft Update Web site:After you apply this hotfix, you will receive the following warning message when you remove a .vhd file from a virtual machine:
You have chosen to remove virtual hard disks from virtual machine VMName. This action will delete the .vhd files.
Do you want to continue?

If you click Yes, the .vhd file is deleted from the Hyper-V server. If you click No, the .vhd file remains attached to the virtual machine and is not deleted from the Hyper-V server.

If you want to remove a VHD from a virtual machine without deleting the VHD file on the Hyper-V server, use the Hyper-V Manager console.

Hotfix information


To apply this hotfix, you must have System Center Virtual Machine Manager 2008 R2 Administrator Console installed.

Restart requirement

You must restart the computer after you apply this 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.
File nameFile versionFile sizeDateTimePlatform
Errors.dll2.0.4272.0669,60826-10-200915:46x86, x64
Ui.hardwareproperties.dll2.0.4272.0546,72826-10-200915:46x86, x64
Ui.library.dll2.0.4272.0653,22426-10-200915:46x86, x64


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