Very much this:
I got the xbox overlay to work over Arma3Launcher, but when I launch the game itself there is no overlay options detectable in the menus.
I went into to editor/ingame and there I managed to prompt the question from DVR "Is this a game" or something. When I selected "yes" and SHOULD get the working overlay for recording; DVR only announced another message in the right corner "Something went wrong"-error.
I tried adding the game manually from xbox app in many different ways.
Even tried to config the overlay button off of the windows key, but still not working.
Thus far all I've tried and searched from the vast internetz hasn't yeilded any results for getting this xbox dvr to work in Arma3 (Windows 10/steam).
The DVR works great on most of the other games thou.
Please help.