When I added a client(OS:Windows XP SP2) to a domain, the client prompted 'Welcome to join the domain ++(domain name)", then the computer rebooted automatically. Press 'ctrl+alt+delete', I typed username,password and 'log on to ++ domain',however, on error message appeared 'The local policy of this system does not permit you to logon interactively'. In fact, I can log on this client computer with local administrator. I don't know what happend so that the error information occured. Please help me.