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KB2884256 update fails, Dexcom driver install fails

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Boggin:
While Windows Update doesn't work in Safe Mode with Networking, can you try the direct download in that mode should it be McAfee that is blocking.

If that doesn't do it then open a command prompt as an admin and copy & paste these commands where they will auto run.

If any seem to hang then press enter.

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

ren C:\Windows\System32\catroot2 catroot2.old

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

sptilton:
I have tried both techniques before without success. I also suspect that one or more of the Windows Fixit programs I used just automated your command line technique.

Boggin:
If you haven't already tried Windows Installer 4.5 give it a try. http://support.microsoft.com/kb/942288

sptilton:
It appears I am already running Windows Installer 4.5 (see attachment).

Boggin:
Have you checked Device Manager/View/Show hidden devices for any yellow alerts, possibly against Non-Plug and Play Drivers ?

Can you uninstall Dexcom, retry Windows Update or reinstall Dexcom to see if its driver update will install then and are you loading the driver for Vista ?

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