http://support.microsoft.com/default...b;en-us;822798
You Cannot Install Some Updates or Programs “Digital Signature not found”
When you use the Windows Update Web site to install updates, the installation
fails and the Windows Update.log file contains error 80070643.
If all else fails, download them from the catalog and try a manual install
You can download them from the Catalog and save to be installed later.
http://v4.windowsupdate.microsoft.co...en/default.asp
How to Download Windows Updates and Drivers from the Windows Update Catalog
http://support.microsoft.com/?kbid=323166
Click Add button for each update you want to download. Once you have what you
want, Click the “Go To Download Basket” link. Type in or browse to the location
where you want the updates saved to and then Click the “Download Now” button.
Once downloaded, you can then burn them to CD.
Other links which may be of interest:
Roll up link
http://support.microsoft.com/?kbid=826939
Search for a download
http://www.microsoft.com/downloads/s...displaylang=en
"Byg Byrd" <> wrote in message
news:EBC7BA68-E12C-4126-97E3-...
> Try as I might I have not been able to install the following recently
> released updates:
> - Security Update for Windows XP (KB840315)
> - Update for Background Intelligent Transfer Service (BITS) 2.0 and
> WinHTTP5.1 (KB842773)
> - Security Update for Windows XP (KB841873)
> The install process appears to go alright, but at the end of it up comes the
> Installation Failed - Try Again page. I guess I've tried about 10 times, all
> to no avail.
> --
> Tweet tweet
>
> Byg Byrd
>
>