Error Message+

[Brian Holliday]

I updated from windows xp home to windows xp pro tryed to
get the update patch for xp service patch 1 but said
invalide serial # see your administrator but iam using
this putter at home

 

[Chris Lanier]

Error Message: The Product Key Used to Install Windows Is Invalid
http://support.microsoft.com/?kbid=326904

 

[Shenan T. Stanley]

I updated from windows xp home to windows xp pro tryed to
get the update patch for xp service patch 1 but said
invalide serial # see your administrator but iam using
this putter at home

That means you are the administrator.
Research...

http://support.microsoft.com/?kbid=326904