See if this KB article is pertinent to this issue, Steve:
Error message when you try to install Microsoft Update on a Windows
Vista-based computer: "Could not install Microsoft Update on the computer"
http://support.microsoft.com/kb/933528
>> Now when I try and use Windows Update I cannot upgrade to Microsoft Update.
>> I get a Windows Update 6 webpage and then another IE window opens that
>> gives me Windows Update 4.
The system can access Windows Update and when you click the 'upgrade' to
MU another WU 6 page opens in IE and then another IE instance opens to
WU 4 ? Weird.
What add-ons are installed for IE ?
MowGreen [MVP 2003-2007]
===============
*-343-* FDNY
Never Forgotten
===============
Steven Jones wrote:
> HI all,
>
> I have just preformed a Restore from Complete PC backup and all restored
> smoothly. Reason I did this was to roll back to Pre-SP1 Beta.
>
> Now when I try and use Windows Update I cannot upgrade to Microsoft Update.
> I get a Windows Update 6 webpage and then another IE window opens that
> gives me Windows Update 4.
>
> This is rather odd and is there a workaround to get Microsoft Update for
> Vista back?
>
> This was working fine when I took the backup image so can't see why it's
> broken and it was meant to be a clone of the Windows installation.
>
> So much for "Complete PC backup" :-/