Windows Genuine Advantage is a term that grates on the nerves of many, some of who are legitimate legal Windows license holders. Why? Because more than just a few companies and individuals have had their legitimate Windows licenses falsely fail activation or be declined when validating for things like Windows update or bonus downloads such as Windows Defender. SecurityFocus columnist Mark D. Rasch takes a look at Windows Vista licensing and its product activation component and compares it to walking on thin ice.
"The terms of the Vista EULA, like the current EULA related to the "Windows Genuine Advantage," allows Microsoft to unilaterally decide that you have breached the terms of the agreement, and they can essentially disable the software, and possibly deny you access to critical files on your computer without benefit of proof, hearing, testimony or judicial intervention. In fact, if Microsoft is wrong, and your software is, in fact, properly licensed, you probably will be forced to buy a license to another copy of the operating system from Microsoft just to be able to get access to your files, and then you can sue Microsoft for the original license fee. Even then, you wont be able to get any damages from Microsoft, and may not even be able to get the cost of the first license back."
News source: SecurityFocus