Acrobat Reader stealing focus from full screen applications (games) for no apparent reason.
An app was randomly and misteriously taking focus from my games, my games would minimize and I would have to alt-tab back to them. The event doesn't happen often, but it's still annoying. I think it only happens once per windows boot.
I found tool, to help my identify when programs switch focus. It would print the Process ID, Full Path, and Time for each focus switch on windows. Then you would wait for the event to happen, note the time, and look at the log for the closest timestamp. (Program from HappyDriod.com/focus)
After running it in the background for a few sessions, I identified Acrobat Reader as the culprit. I didn't open Acrobat Reader to begin with, it was closed, and has been closed for that windows session until that moment in time. And which game I'm playin
The line would look something like this:
3368:C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe | Tue Nov 05 09:14:18 2019
My guess is it's opening to check for updates. I checked for updates manually and it seems to be fully updated. This is my version: 19.021.20049
I'm currently running Windows 10, version 1903, build: 18362.449 (64-bit)
Nvidia Drivers: 436.48
