How WPA really works was a closely guarded secret until GmbH analyzed WPA using a copy of Windows XP RC1 and published a paper on their findings.In this post you will find answers to some of the most frequently asked questions about Windows Product Activation. WPA was first introduced in Windows XP and continues to exist in Windows Server 2003, Windows Vista, Windows Server 2008 and Windows 7 as well.WPA enforces each end user to activate his/her copy of Windows so as to prevent unauthorized usage beyond the specific period of time until it is verified as genuine by Microsoft.
Windows Product Activation or WPA is a license validation procedure introduced by Microsoft Corporation in all versions of its Windows operating system.