<div>
Has the file extension is VHD?<br />
<br />
does the restored VM contains OS or simply data?<br />
<br />
U can mount this VHD file in disk management if this just data file<br />
<a href="http://www.thomasmaurer.ch/2010/12/howto-attach-detach-vhd-in-windows-server-2008-r2/" rel="ugc">http://www.thomasmaurer.ch/2010/12/howto-attach-detach-vhd-in-windows-server-2008-r2/</a><br />
<br />
If old VHD also contains OS as well, then it cannot be recovered
</div>


Has the file extension is VHD?

does the restored VM contains OS or simply data?

U can mount this VHD file in disk management if this just data file
http://www.thomasmaurer.ch/2010/12/howto-attach-detach-vhd-in-windows-server-2008-r2/ [http://www.thomasmaurer.ch/2010/12/howto-attach-detach-vhd-in-windows-server-2008-r2/]

If old VHD also contains OS as well, then it cannot be recovered

<div>
Could you post a list of the files you have? <br />
And the exact error message?
</div>


Could you post a list of the files you have?
And the exact error message?

<div>
&gt; Now I have restored the VM-files (overwriting the old ones).<br />
<br />
how did you restore the VM files? simply import the VM folder or create a new VM using the existing VHD?<br />
<br />
as a best pratice, did you make one more backup before opening the backup?
</div>


> Now I have restored the VM-files (overwriting the old ones).

how did you restore the VM files? simply import the VM folder or create a new VM using the existing VHD?

as a best pratice, did you make one more backup before opening the backup?

<div>
What happens when you try to start the VM? What error are you getting? Can you also please do a icacls of the virtual disks and post those results (run from a command prompt).
</div>


What happens when you try to start the VM? What error are you getting? Can you also please do a icacls of the virtual disks and post those results (run from a command prompt).

<div>
any feedback from the author please?
</div>


<div>
<div class="content wysiwyg-content">
I have an urgent question.<br />
I have a Windows 2008 R2 server with Hyper-V.<br />
I only have file-backup of the folder where the virtual machines was stored (not VSS).<br />
Now I have restored the VM-files (overwriting the old ones).<br />
But I´m unable to open the VMs in Hyper-V.<br />
<br />
What can I do?
</div>
</div>


I have an urgent question.
I have a Windows 2008 R2 server with Hyper-V.
I only have file-backup of the folder where the virtual machines was stored (not VSS).
Now I have restored the VM-files (overwriting the old ones).
But I´m unable to open the VMs in Hyper-V.

What can I do?

Hyper-V: restore of virtual machines

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.

Hyper-V

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.