My Xbox shuts off after a couple seconds of loading into my single player world

Got the fix, it does not need to be uninstalled, I had to clear the cache.

This is done by holder you finger over the xbox symbol on the console for 5 seconds, it shuts off, left it off for 30 seconds, turned it back on (since I have my tv connected via devices it shut off my tv during the boot up sequence after sending the on/off
command lol)

After that, games loaded fine from disk. We had left the console on for about 3 days straight, so I figure I should shut it off more often.

I am having the same problem I have been trying all kinds of different stuff and still when I go onto YouTube it will load the home of YouTube for a couple of seconds and then it will shut off my Xbox. This problem needs to be fixed like now!!!

Same here. Loads up youtube and my console shuts off every single time. Please fix this XBL

So I was just trying some things to troubleshoot the online/splitscreen glitch. I was able to start a single player online game, and then have a second profile join for splitscreen after the world loaded. Just hit the A button on the second controller and
select the profile from the menu that pops up. Hopefully this workaround helps someone out.

As a follow up to my "green" loading screen, I was able to get it to finally work by re-starting my system multiple times.

I would turn it off by holding my finger down on the power button on the console until it shut off, then I would unplug the power cord for about 30 seconds. Then I would turn everything on again. After about 7 times doing this is finally kicked over to
the new dashboard. I did have to leave the "green" loading screen on for a couple of minutes though.

I hope that helps someone!