From: Jan van Hoek (NL) 

>> You haven't given enough info to identify
>> what warning you saw and what component presented it.

Since I don't want to appear like regular (l)users, who cannot be bothered
to remember the exact error message and the circumstances in which it
appeared, I made an attempt to reconstruct the problem.

I started with downloading
http://www.microsoft.com/downloads/details.aspx?FamilyID=141d5f9e
-07c1-462a-baef-5eab5c851cf5&displaylang=en>, which is AKA DirectX
9.0b EndUser Runtime. I ran the resulting EXE on my Windows XP Pro SP1 box,
and it installed without a hitch. So far for the good news. Doing the same
on my Windows 2000 Adv Server SP3 box, the infamous "Digital Signature
Not Found" popups appeared, with "Unknown software package"
in the body text.

FYI: The latter box (showing the problem) is completely up-to-date in terms
of Windows Update (IOW, better patched than the former). It is my shared
external ISP connection with ISA running on it, hence my eagerness to keep
it as up-to-date as humanly possible.

Further FYI: The offending popup messages appear 2 times during the
installation process.

Can it be that my inventory of trusted root certificates is not complete,
that being the reason that the signature was not recognized as a valid
one??

An other cause for this problem can be that I accidentally killed a
necessary background service as part of the OS hardening process?? This is
just a wild guess and not a very likely cause for these particular popups,
because all other downloads (incl. regular Windows Update runs) proceed
without problems, and I may assume that these are checked for valid
signatures too??
--
-- Jan van Hoek (NL)
-- Sun 8 Feb 2004 01:57 CET

--- BBBS/NT v4.01 Flag-5