http://support.microsoft.com/default.aspx?kbid=326686
"Windows Update Was Disabled by Your System Administrator" Error Message
Read the whole article especially the registry hack and see if it applies to
your situation.
"Dave Mann" <tuesday@iaw.on.ca> wrote in message
news:09ec01c3581a$924b53b0$a401280a@phx.gbl...
> I just did a clean install of XP home and now when I try to
> install SP1, it goes about half way through and stops. I
> then get a message "access denied". And the instal stops.
> What could be the problem?
>
> Dave
Re: SP1 won't install