I was at my Dad's house yesterday and have a couple onn 4K streaming boxes over there. New Google TV one and older Android TV one. I tried running a speedtest to test his network to my server and on both boxes it spit back an error something along the lines of "there's no app installed capable of this" or something along those lines. I've never seen the error before on any device locally or remote. I was in a hurry so didn't investigate further or get the exact error code.
Any clue what that was? Pretty sure the latest Android TV release was on the boxes and latest 12.01.2106 beta server installed on Windows.