Upgrade Hyper-V integration services error

Hello,

Upgraded our Hyper-V to 2012 R2, and now need to upgrade Integration services on guests. When running this we get the following error, anyone sucessfully solved this:

An error has occured. One of the update processes returned error code 6801.

Thanks
joe
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joebilekAsked:
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MaheshConnect With a Mentor ArchitectCommented:
Yes you can try to upgrade VM to Generation 2 VM for Hyper-v 2012 R2 in that case as you are running 2012 in guest OS

It should work
http://technet.microsoft.com/en-us/library/dn282278.aspx#bkmk_generation

may be you can try to create new Generation 2 VM and then add 2012 guest VM HDD there so that it might get upgraded automatically

I have not tried, but you can give try please...
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MaheshArchitectCommented:
what guest OS you are running...
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Svet PaperovIT ManagerCommented:
Uninstall the existing Integration services from the VM.
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joebilekAuthor Commented:
Windows 2012 Server. How do I uninstall Integration Services, where? cant see them under Add/Remove Programs?
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MaheshArchitectCommented:
You don't need to uninstall integration service
Integration service is installed automatically when you deployed 2012, 2008 R2, win7, win 8  guest VMs
Only the thing it is not visible in add remove programs.
In case of windows 2003 and XP you might need to install integration service.

Thanks
Mahesh
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joebilekAuthor Commented:
Yes but I cannot upgrade, thats the problem.
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MaheshArchitectCommented:
If you try to upgrade integration service , it will just reinstall existing package unless you install any updated integration package on host server.
I suggest you to upgrade integration service only if you got its upgrade package from MS to deploy in host server repository..

Mahesh
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joebilekAuthor Commented:
The Host is upgraded to 2012 R2, so its trying to upgrade the Guest, but the error happens.
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Svet PaperovIT ManagerCommented:
Do you have an anti-virus on the vm? Try stopping it if that’s the case.
Could you go in the Event Log of the VM and search for other errors or more information about this one.

As workaround you could upgrade the VM to 2012 R2 as well. That will fix the Integration services issue.
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joebilekAuthor Commented:
This worked, upgrading to R2 was the only way to get the new R2 Hyper-V integrations Services to work.
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