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KB2884256 update fails, Dexcom driver install fails

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Boggin:
I never use the driver update option in Device Manager as Windows very rarely has up to date drivers so I'd try the computer support site for any Nvidia updates.

That's a new error message for me and a Google has suggested a repair install, deleting the restore points, disabling AV program/firewall, or uninstalling the devices in Device Manager and letting Windows reinstall them either through Action/Scan for hardware changes or a reboot - which is the one I would favour after first creating a restore point.

Having Googled Dexcom I appreciate the importance of this program, but if it's working okay, do you really need to update any drivers ?

It's generally advised (that I've seen), that if something is working fine then leave any driver updates until it isn't - but this doesn't resolve the failure of KB2884256 or why Windows is reporting it is unable to find that file.

sptilton:
The driver for the Dexcom Studio program fails to install. There is no driver to update. The one that fails to install is the only one. The program runs, but is useless without a working driver. The data from the measuring device can not be downloaded into the program for analysis without a working driver.

Boggin:
I see.

I don't have an answer as to why Windows cannot find that file but hopefully Shane will be able to sort when he returns, either later today or Monday.

Did you try creating a restore point and then uninstalling those USB Human Interface Devices to allow Windows to reinstall them ?

Shane:
I have a feeling the problem may not be the driver or the windows update but instead the current drivers loaded for the normal USB.

Try this, might be hard if you have a usb mouse. But in the device manager have it set to show hidden devices, then go and uninstall every usb device there is that you can. So in the device manager go to the universal serial bus controllers and remove them all and then reboot, letting windows reinstall them.

When windows reinstalls them it should update the drivers and registry locations for them. I had this problem on a customers machine a while back and this was the trick that I got to fix it. It was one of the usb controllers that was causing the problem.

Shane

sptilton:
In "device manager" I have four areas that mention USB. One area is under "universal serial bus controllers". The mouse and keyboard have their own sections. I am not  sure  which ones  I should try removing. Just the ones under "universal serial bus controllers" or some or all of the others (see attachment). Both my mouse and keyboard are USB.  So what, if any, is the process for removing the mouse and keyboard and still controlling the computer?

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