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unable to upgrade XP pro to Vista Business, approved for upgrade by vista upgrade tool...........upgrade option greyed out
you can't upgrade from XP pro to Vista Buisness... that'll be why, Try Vista Enterprise :-)
I think You are using Windows XP Professional x64 bit edition, If so, you are eligible for an upgrade copy to a corresponding or better edition of Windows Vista, but a clean installation is required.
Try for Clean installtion of Vista Business.
Don't get me wrong, but what are we supposed to post on the wiki? A knowledge base of tutorials and tips&tricks? Or just a mash of garbage about posting and answering general Microsoft Support queries?
It would help by providing some direction for the visitors to the community, otherwise it will never be used to any great benefit.
Thank you