xbox controller having issues connecting and button

I have a similiar issue with my youngeat sons Xbox. The controller was paired as he was playing it,but in mid game play error shows control not paired,connect controller. The controller tries to connect,but the button on the Xbox doesn't seem to work.
Any suggestions?

Hi Tony, with your second controller try and manually sync it to your Xbox one, see if it works for you, doing this fixed this issue for me.

support.xbox.com/.../connect-a-wireless-controller

1. Turn on your Xbox One console.

2. Insert AA batteries (or rechargeable batteries from the Xbox One Play & Charge Kit) into the controller. See Using AA batteries in your Xbox One Wireless Controller.

3. Turn on your controller by pressing and holding the Xbox button until the controller turns on. (The Xbox button is the larger circular button located in the middle of the controller near the top.) The Xbox button will flash, indicating it's not yet connected
to a console. If the Xbox button is lit solid, the controller is already connected.

(Note If the controller doesn't turn on, check the batteries. If you're using rechargeable batteries, make sure that they're charged.)

4. Press and release the connect button on the console. (The connect button is a small circular button located around the corner from the disc tray.)

5. Within 20 seconds, press and hold the black connect button on the back of the controller until the controller's Xbox button quickly flashes a few times, indicating that it's searching for the console. It switches to a solid light when it's connected.
(The connect button is a small circular button located on the top of the controller as you hold it in your hands.)

Your controller is now connected to your console. Repeat this procedure for every extra controller that you want to add.

I am having the same issue with a normal Xbox One controller connected via bluetooth. Worked fine until yesterday and now the game bar won't open when I press the Xbox button. As above, will open with WIN+G.

Have tried resetting the app and reconnecting the controller but to no avail.

The controller works fine otherwise and can be turned on/off with the Xbox button so don't see it being an issue with the button itself.

hit the controller connect button located on the xbox, then on the controller. it will be a little button that looks like it has little radio waves inscribed next to it. lights will flash in a circle on the console untill the xbox connects the controller,
then the lights on the controller will all flash two or three times, then only one light on the controller and one light on the xbox will be lit up and tadaa! It works. NOW, if you have any issues please post them in here. there may be another cause of this
issue. I hope this helps!

P.S, power supply has nothing to do with this issue

Try the following steps:

• With the controller on, remove the battery or battery pack. Press the power button on the controller.

• Turn off your Xbox Console by holding the main Power button on the front of the console.

• Unplug your Xbox 360, and press the Power button

• Plug your Xbox 360 back in, turn it on, and try using the controller again.

If you're still having issues, try to
sync your controller to your Xbox 360 console again.

Hopefully it's just a connection issues and these steps will help! Good luck!