I had a problem at a customer to day.

After I have deployed a virtual Windows 2012 R2 server from MDT to a Hyper-V 2012 R2 enviroment –  it was not possible to activate the virtual server with Microsoft Automatic Virtual Machine Activation.

The error was “cannot find the KMS server”!

The solutions:

Enter the Microsoft Automatic Virtual Machine Activation by using this command:

cscript.exe c:\windows\system32\slmgr.vbs /ipk DBGBW-NPF86-BJVTX-K3WKJ-MTB6V

The it was now possible to activate the virtuel Windows 2012 R2 server

The it just was putting it into the MDT deployment solutions:

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To read more about the Microsoft Automatic Virtual Machine Activation  https://technet.microsoft.com/en-us/library/dn303421.aspx