Microsoft uses Windows GenuineAdvantage Validation to check if theWindows operating system is genuine or non-genuine. If you want to download certain files from Microsoft Download or , you will need to have a genuine license or else you can’t download. The same goes to installing Microsoft Security Essentials which also checks and validates your for genuine. WGA is only for XP and Vista and has been replaced with WAT.
Cracking Notification has always seemed easy for crackers because whenever Microsoft released a newer WGA to counter the old cracks, the crackers gets back to work and normally within a few hours the cracked legitcheckcontrol.dll will be made available publicly.