Xbox one S suddenly stop syncing both my controllers, usb cable wont work

connect the controller with a USB cable, turn it on and hit the sync button it should sync to your console then disconnect the USB cable.

Hello FrancisDubé,

Thank you for posting on the Xbox forums. We understand that none of your controllers are able to sync to your console since the sync button on your console is not flashing. We recommend completing a

soft factory reset. This type of reset will keep all your games and applications installed on the console, but it will remove all the profiles. Therefore, the email address and password of those accounts must be known before this step is taken. We also
have
a support article for controllers that may be able to resolve the issue if the soft factory reset does not resolve the issue. Be sure to let us know the results!

hello the control light turns on or does the control vibrate? otherwise, the batteries are probably not making proper contact with the metal tabs in the battery compartment, if so you probably only need something with which you can gently push the tongue
to make contact with the battery again.

Yes both controllers work perfectly fine and are on!

I have exactly the same problem. I have an Xbox One and Three working controllers. The xbox will not stay connected to any of them. So I am now using a micro usb plugged directly into the controller, but that is not working at all. The xbox light flashes
on the controller and then it disconnects. If left alone it will reconnect in about 15 seconds. And then it disconnects again after 1 or two minutes. I have tried all of the steps provided on the link posted. I have even factory reset the xbox console and
no change.