Hello, I installed Windows 8.1 on my rMBP 15" 2014. I activated Windows when booted directly to it via Bootcamp. When I accessed this partition via VMware Fusion 7, the system asks me to enter a product key. I entered the same key but Windows does not accept it. When I checked the system, it lists the last five letters as the current key. However, at the bottom right hand corner, it says Windows 8.1 Build 9600. So, has Windows really been activated? If so, why the Build number shows up on the desktop? Could you please let me know what to do? Thanks.