http://v4.windowsupdate.microsoft.com/troubleshoot/
Scroll down to: When installing an update you receive the following message:
Software you are installing has not passed Windows Logo testing - WinXP
Windows Update Troubleshooter
and/or
http://www.jsiinc.com/SUBN/tip6500/rh6571.htm
'The software you are installing has not passed Windows Logo testing to verify
it's compatibility with Windows XP'?
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.
"Jack" <(E-Mail Removed)> wrote in message
news:386701c4720a$27af3610$(E-Mail Removed)...
> I cannot download Direct X 9. I get error message that
> it "has not passed Windows Logo testing to verify its
> compatability with Windows XP. This software will not be
> installed." Any idea why?