There is a problem with Microsoft’s WGA servers and they are not allowing Vista to be activated as Genuine.

http://forums.microsoft.com/Genuine/ShowForum.aspx?ForumID=1004&SiteID=25

Do not do anything that would require you to reactivate or validate Vista.
EX: Windows Updates, Hot Fixes, Activation, etc.

Wait a week before trying again to give Microsoft a chance to sort through the problem. If you do not, you will be left with a Vista that is considered not Genuine.

If your 30 day trial period is almost up, or you are already in Reduced Functionality Mode, then see: - Read Tutorial

Shawn