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.
http://v4.windowsupdate.microsoft.com/troubleshoot/
Updates fail to install and you receive error message 0x80070643
If all else fails
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
"cathe" <> wrote in message
news:1CFF3490-5CCE-4ED4-8CCC-...
> can download new updates but then wont install,,why is this happening???
>
> HELP ME PLS