I currently have Win 8 Enterprise downloaded from MSDN and activated with "slui 3" command using my MSDN Windows 8 Enterprise and Enterprise N MultipleActivation key.
I wanted to upgrade to Windows 8.1 Enterprise and have downloaded the ISO from MSDN that I ran, the OS installed flawlessly (I chose not to keep anything) but I noticed it is not activated (!!?)
I tried entering previous key that I used to no avail, it will just tell me key does not work. I even tested "slui 4" command so I could activate via phone but I get "Cannot activate via phone" message.
Does anyone know how to resolve this issue? It is not like I am using pirated software or keys...