This may help, about halfway down the page, the quote from Andrew McLaren: http://www.tutorials-win.com/Vista/error-WindowsUpdate/
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP http://mvp.support.microsoft.com/
Windows help - www.rickrogers.org
My thoughts http://rick-mvp.blogspot.com
"Brandon" <Brandon@xxxxxx> wrote in message
> When I try to install Windows Vista Update Security Update for Microsoft
> Framework, Verson 1.1 Service Pack 1 (KB929729), I recieve error
> WindowsUpdate_00000643. I think this has to do with Office 2003 Prof.
> anyone trouble shoot this for me ? I would normally just uninstall office
> and reinstall it but I've lost the disk and only have the product key and
> cannot find the software online anywhere. Someon help, Thanks.