Try this for a fix!
Let us know how it works for you.
http://support.microsoft.com/kb/943144
"Sprocket" <> wrote in message
news:1395B0E6-9905-4534-A13B-...
> XP sp2 would not boot so I reinstalled XP over the existing installation.
> then I went to microsoft updates to reinstall all the patches. It will
> download the patches but will not install any of them including the
> defender
> definitions. Computer is member of domain. Automatic updates is set in
> control panel but all choices are greyed out so I can't change them.
>
> What do I need to do to get fully patched?
> --
> Sprocket in Texas