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Unlike Virtual PC or Virtual Server, Hyper-V continues to maintain a list of registered virtual machines within the Hyper-V Manager console. Provided that the VM settings themselves are accessible, this applies to virtual machines regardless of where the actual virtual hard disks (.vhd) are stored.

If the virtual hard disk for a virtual machine cannot be found, the following error message will be returned when an attempt is made to start or restore the VM. The fix is easy - ensure that the .vhd is not corrupted and accessible (from storage device directly or via the network).

[Window Title]
Virtual Machine Connection

[Main Instruction]
The application encountered an error while attempting to change the state of ‘virtual machine name’.

[Content]
‘virtual machine name’ failed to restore.

Microsoft Emulated IDE Controller (Instance ID { - - - - }): Failed to restore with error ‘The system cannot find the path specified.’

Attachment ‘C:\Program Files\vhd\virtual machine name.vhd’ not found. Error: ‘The system cannot find the path specified.’

Attachment ‘C:\Program Files\vhd\virtual machine name.vhd’ not found. Error: ‘The system cannot find the path specified.’

[Expanded Information]
‘virtual machine name’ failed to restore. (Virtual machine - - - - )

‘virtual machine name’ Microsoft Emulated IDE Controller (Instance ID { - - - -}): Failed to restore with error ‘The system cannot find the path specified.’ (0×80070003). (Virtual machine - - - )

‘virtual machine name’: Attachment ‘C:\Program Files\vhd\virtual machine name.vhd’ not found. Error: ‘The system cannot find the path specified.’ (0×80070003). (Virtual machine - - - - )

‘virtual machine name’: Attachment ‘C:\Program Files\vhd\virtual machine name.vhd’ not found. Error: ‘The system cannot find the path specified.’ (0×80070003). (Virtual machine - - - - )

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Tested on Windows Server 2008 x64 RTM with Hyper-V RC1

Technorati tags: Windows Server 2008, Windows Server Virtualization, Hyper-V

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