Most Xbox One games and apps don’t actually have a quit menu item any more. This usually isn’t a problem thanks to Xbox One’s clever way of handling game/app switching, allowing you to go out of a game to the dashboard to do something else, and then hop right back in at the exact point that you left off!
However, sometimes this clever system does go a little wrong (if you’ve left it for too long for example), and you jump back in only to find the game asking you to reconnect the controller and press ‘A’ to continue. Sadly for you though, this isn’t working, leaving you with a game that is stuck and no way of getting it to work again. (Remember, you can’t jump out to the dashboard and click on the game to relaunch it, as it will just switch to the frozen version currently in memory.
So, the ability to quit an active game is pretty important then. Unfortunately, the method of achieving this is not instantly apparent from Microsoft’s Xbox One UI, so after a little Google search, I’m jotting this down here so that I don’t forget.
To exit a game or app on the Xbox One, hit the middle Xbox button on your controller so that you are in the dashboard. Use the left stick to make sure that the large, central tile on the home page is highlighted (should have a white border around it), and once it is, tap the ‘Menu’ button (the small one marked with the tree stripes to the right above the Xbox button) to bring up a context menu. At the bottom of the menu you should spot the ‘Quit’ menu command.
Selecting that will shut down the currently active game, allowing you to start it up again from scratch.
Related Link: Xbox One