Backup of Windows Server 2012 R2 Hyper-V cluster fails

Hi,

Recently the support for backup of Windows Server 2012 R2 using NBU 7.5.0.6 was announced.

I do have a Windows Server 2012 R2 Hyper-V cluster. I have installed the special package of 7.5.0.6 for Windows Server 2012.

But when I try to add a client by browsing the virtuel guests running on the cluster I simply can't see any...

I can add a client by typing the display name. But when I run the backup it fails immidiately with error code 48 ("client hostname could not be found(48)").

I'm running NBU 7.5.0.6 on Windows Server 2008 R2 and Windows Server 2012 Hyper-V clusters without any problems.

What is the problem?

Thank you for your help!

Best regards

Henrik