KB2668084 – VM Restored In Saved State Incorrectly On Windows Server 2008 R2 Hyper-V

Microsoft has released an elective hotfix (hotfixes are never in Windows Update/WSUS/etc) for when a virtual machine is restored in the Saved state incorrectly on a Hyper-V server that is running Windows Server 2008 R2:

Consider the following scenario:

  • You have two Hyper-V servers that are running Windows Server 2008 R2.
  • On one Hyper-V server, you perform a redirected restore operation to restore a Hyper-V virtual machine that is located on the other Hyper-V server.
  • The Hyper-V Integration component that is installed on the guest operating system is incompatible with the target Hyper-V server.

In this scenario, the virtual machine is restored in the Saved state. Additionally, you must delete the saved state file before you use this virtual machine.

This issue occurs because the Volume Shadow Copy Service backup requester copies corrupted .vsv file during the restore operation.

A supported hotfix is available from Microsoft.

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