Michael, do you see *any* other threads here about the same problem??

When you try to install an update for the .NET Framework 1.0, 1.1, or 2.0,
you may receive Windows Update error code "0x643" or Windows Installer error
code "1603":
http://support.microsoft.com/kb/923100
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE, OE, Security, Shell/User)
AumHa VSOP & Admin http://aumha.net
DTS-L.ORG http://66.39.69.143/


Michael McCrea wrote:
> I upgraded my Compaq Laptop XP Home to Vista Business. All my other
> updates
> will install fine but a Security Update for .NET SP 1 keeps failing. I
> also
> get an "error code 643". I attempted the fix suggested for this by turning
> on Services for Office Sourse Engine to "Automatic" instead of manual, but
> that still has not worked any suggestions