Windows Activation Technologies is the new name Microsoft’s anti-piracy features in both Windows 7 and Windows Vista.It is basically a new name for the same concept that was introduced in Windows XP under the name of Windows Genuine Advantage. The name change was necessary because of the fundamental differences between the technology used in Windows Vista and Windows 7 from that used in Windows XP according to Joe Williams, general manager, Worldwide Genuine Windows at Microsoft. Microsoft would continue to inform customers if the software product they are using is “genuine and licensed and help them do something about it if it’s not”.