http://www.updatexp.com/cryptographic-service.html
http://www3.telus.net/dandemar/updatinf.htm
For further information etc.
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.
"Luigi" <> wrote in message
news:CFD66AC8-DC1B-4F6E-815F-...
> After unsuccessfully installing the SP2 of XP my computer crashed resulting
> in an overhaul on my HDD. Now when I return to get the updates from MSFT
> site, 1st thing it wants to install by force is the BITS2 but never
> completes. I get error: "Setup could not verify the integrity of the file
> Update.inf. Make sure the Croptographic serice is running on this computer."
> That service has been verified to be running, but still prevents
> installation.
>
> Anyone?!