How do I get my sons xbox one off the green screen?

If your console is stuck on a green screen, power cycling your Xbox console will reset the network card and clear the cache:

1. Press and hold the Xbox button on the front of the console for approximately 10 seconds.
   
2. After the console has shut down, unplug the mains lead and wait 30 seconds.
   
3. Plug the console back in and turn it on by pressing the Xbox button .
   
4. If you still see the Xbox start-up animation screen for 10 minutes or longer when the console powers back on, go to: Perform an offline system update
   

My son xbox one s is stuck on a green screen lock. Call Microsoft help desk to everything is still on that screen. What can I do?

I have experienced the same exact problem as the OP. My Xbox One would be stuck on the green screen. I noticed this happened when the kinect itself would not turn on. So I would do a hard reset by holding down the power button for about 30 seconds, then
unplugging the console (sometimes the kinect), plugging the console back in. Most of the time the kinect would power up and xbox would get beyond green screen. I did the same thing OP did figuring skipping through kinect process altogether would solve it.
On my profile I turned off kinect. Turned off console normally with controller. I was able to start up xbox and sign into my son's profile, but when I signed into my own console it froze. Now I cannot get passed green screen and kinect is turned off in settings.

So it seems I cannot startup xbox without kinect powering up.

My son has the same problem, brand new Xbox one! Turn it on to the green screen for a few seconds then a black screen saying contact Xbox cust service, system error code e305 00000001 80073cfe

Can't do n e thing with the *** thing, tried turning it off, unplugging it but makes no difference, seen the offline dignostic stuff but a pain in the ***, got better things to do Christmas morning, n e one found a solution to this??

My Xbox one on green screen i turned off 10 seconds still nothing