How do i play games with keyboard and mouse on Xbox

My son was playing fortnite on xbox and somehow changed setting to keyboard/mouse. We did not connect a mouse or keyboard (not do we own one) and cant figure out how to put game back to controller.

There are some games that do use a keyboard/mouse combination if the player chooses to use it. https://www.windowscentral.com/list-xbox-one-mouse-and-keyboard-games

And here's some information on how to set up the Keyboard/Mouse on the console https://beta.support.xbox.com/help/Hardware-Network/accessories/mouse-keyboard

Currently only Minecraft (without the "Xbox One Edition" in the title) is playable with keyboard and mouse.

All other games, including Fortnite do NOT work with Keyboard and Mouse on the Xbox One.

If you want to play Fortnite with Keyboard and Mouse, you can do that on a regular Windows PC.

Some games on the Xbox One or Series X|S do support keyboard and mouse. So if you use a keyboard and mouse just by plugging them into the usb ports on the Xbox console, then no it is not a bannable offense. It can be though if you use an unofficial adapter to play on games that do not support keyboard and mouse.

How do I start the game while using mouse and keyboard, I can’t start it with mouse and keyboard so I have to use the controller