Validation also permits you to use certain features of the operating system software or to obtain additional benefits.
Questions on Super User are expected to relate to computer software or computer hardware within the scope defined by the community.
To answer the question in the title (I don't have a cracked version to try it on), no, it shouldn't shut it down by itself (who knows what Microsoft will do if they find out you have a pirated copy though...).
In the interest of research, I've been digging into message boards and forums run by unabashed Windows enthusiasts who are intent on breaking Microsoft's activation technology.
WGA also advertises the latest service pack, Service Pack 3, for Windows XP, which requires manual intervention to disable.
Get the software that’s reliable, secure and supported by Adobe for quality you can count on.
Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. I don't know that it's entirely theoretical.
There are two reasons a validation check might fail.
I have tried re-entering the windows key with no luck.
The Microsoft Exchange Server 2007 Management Pack for Microsoft Operations Manager (MOM) monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.