'KB839643 - DirectX9 Setup Error' doesn't go away

  • Thread starter Thread starter David Shulman
  • Start date Start date
D

David Shulman

We have a Windows XP SP2 machine in our office that keeps popping up this
error dialog every time a user logs onto the machine. It doesn't matter who
logs on. The machine is set up to automatically download and install
critical updates. KB839643 was some sort of DirectX security patch.
However, perhaps something went wrong during the middle of the night
automatic updates. It is as if Windows won't remove this update from it's
cache.



The error message itself is ok since it is simply telling us that the patch
is no longer needed since we're running DirectX 9c. However, Windows Update
or Windows Installer is stuck in some way and every time a user log onto the
machine, it is running some script or something that unpacks and runs the
"update.exe" program to run this patch.



The machine is 1 out of 7 workstations running on a Windows 2003 domain. We
aren't running SMS or Software Update Services. No other machines have
shown this problem.



My main question is what magic registry key or file can be changed to
"purge" the cache that Windows must use to store this "updates".



Thank you for any help.
 
Open a CMD.EXE window.
Type the following commands:

net stop cryptsvc
ren %systemroot%\system32\catroot2 oldcatroot2
net start cryptsvc
 

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