Hello Guys! I had Genuine Windows 8 ProWMC!! I updated to 8.1 yesterday. Since my update windows is De-activated and shockingly my GENUINE RETAIL KEY ISN'T WORKING. I called up Microsoft activation and the lady said that my key is Blocked, i talked to a guy from customer care he said- the key is blacklisted! Lol!! Someone generated my key and circulated Then i tried KSSC script, data.dat method, made many skype calls using various retail key from pastebin and as expected its not helping !!(ProWMC)!! So guys i need some help inorder to activate my windows 8.1 ProWMC!! !!This might be a repeat post, but i have tried solutions from different threads and yea success wasnt achieved !! so once my windows is this thread can be deleted except the solution, so that it might help someone else.