A friend of mine had an odd problem, his games were automatically minimizing themselves. It seemed to be on a pretty regular schedule.
I was able to use Adminscope Focus Logger to see that it was something called updater.exe.
http://www.adminscope.com/downloads/win ... us-logger/
A quick Google helped find that it was VivePort for his Vive.

https://www.reddit.com/r/Vive/comments/ ... _in_win10/
We removed it and it seems to have fixed it.

I'm just posting this in case anyone else has this problem.