I created two user accounts on my PC: Mine account (admin) & guest.

When I try to logon as Admin, I get the error, "User Profile Service failed the logon. User profile cannot be loaded."

Anyone who has the same problem or know how to solveit?

Anyone who has the same problem or know how to solveit?

M$ knows. The solution is to modify Windows registry per the article below (WARNING: Exercise care when editing windows registry - doing it the improper way can cause your Windows to stop working).

http://support.microsoft.com/kb/947215

i_Xp/VistaUser

BTW how did you turn on Guest Account in Vista? Did you follow the procedures outlined in the link below??

How to Turn On or Off and Manage Guest Account in Vista?

i_Xp/VistaUser

thank you. I will try to modify Windows registry. :) Yes I think that I followed those procedures when I turn on my guest Account.

Thank you very much