Updates Windows 7 to fix a problem in which the computer may stop responding or restart. This problem occurs if you put the computer into sleep or into hibernation while a virtual machine is running in Windows Virtual PC.
Fixes an issue in which Virtual Disk Service (VDS) on a Windows Server 2003-based computer may experience an access violation during the operation to close VDS. In this situation, VDS stops responding.
Describes an issue in which you cannot export a virtual machine on a Windows Server 2008-based computer that uses Hyper-V if the hard disk configuration settings or network adapter configuration settings are incorrect. Provides a resolution.