After multiple reinstalls of Windows due to some faulty drivers my WMC key become broken In metro UI I get : 0xC004C008 The server reported that the product key has exceeded its unlock limit. In cmd.exe slmgr -ato I get : 0xC004C008 The activation server determined that the specified product key could not be used. My key is not blocked,it activates fine over the phone,but not anymore online... Also I tried a new unused WMC key,and it is blocked,the phone says that I am victim of software piracy (key tested on untouched .iso of Windows 8.1 Pro with Media Center RTM) Unused free WMC key : 0xC004C003 The activation server determined that the specified product key has been blocked. So my question is,will my key reset it's unlock limit after a period of time ? I tried calling to MS and all they tell me is to activate by phone,bla,bla,they can't reset the activation limit,bla,bla Also,did MS blocked the unused WMC keys ?