I have installed an instance of Win Server 2008 R2 on a Virtual machine.
This machine is purposefully on an isolated environment (no internet) for testing purposes.
I need to activate the machine and I have my MSDN key ready to go. I just ran through the same steps with a Windows 7 VM, and was able to register using an automated telephone service from Microsoft.
With Windows Server 2008, I can see the same option to register using this service, but it is greyed out:
Google pointed me to people experiencing this issue but the only workarounds I saw where to use the internet (not an option for me).
Does anyone know how to enable this option?