I found the solution at
http://support.microsoft.com/kb/943144.
Updates are not installed successfully from Windows Update, from Microsoft
Update, or by using Automatic Updates after you repair a Windows XP
installation
"Martin" <martin.shipon@verizon.net> wrote in message
news:8hQTi.2991$f63.1508@trndny03...
> After serveral years with XP Home Edition, I recently updated to XP Pro.
> When running Microsoft Update, I get a list of required updates. I am
> able to download them and verify them, but they will not install. They
> ALL fail almost immediately. Any ideas what might be happenning? Did I
> miss some settings.
>
> Thanks for the help.
>
>
>