I am having difficulty activating a new OEM Product key on an 2012 R2 Essentials as a guest VM on the Host server running Essentials R2. This server was installed using a customized/oem deployment using the following instructions - http://technet.microsoft.com/en-us/library/dn293253.asp
The host activated fine, but the VM's activation is reporting "This key didn't work, please check it and try again, or try a different key". I expect that the same key is used twice, once during installation on the host and activated again in the guest VM.
I have a few more of these installations going out using this deployment method and need a real resolution.
Any thoughts or suggestions?