How do I fix a jammed sync button on my Xbox One S controller?

Haha I'm having the same issue. I even pried open the cover over/around the sync button on the top of the controller. My button then moved up and down loosely but has lost the clicking sound and is unresponsive when I press it (even very hard). No idea if it feels like it's being constantly pressed. My guess is there's a problem underneath where the actual click takes place. If you've found a solution I'd love to know

I have the same problem, at first I could still sync and use the controller via USB cable and on pc by adding the device. However now it just constantly flashes syncing, even after I add the device in windows and it says paired it keeps flashing and won’t work. So I am guessing the button is jammed down and I’m not sure how to get it unstuck except by maybe prying off the entire button. I don’t think you could repair the button without being really good at soldering and attaching a new button taken from another controller since now one sells the part on its own. I think it’s the weakest button on the controller sadly and not the best design that it gets jammed on rather than just breaking.

"I got a controller that had a broken sync button and I had the opportunity to fix it. If no trick worked from the outside, you will probably need to take a look from the inside. On mine, the button was push so hard that a part of it detached from the board and it was the reason why the button was « stuck ». All I got to do to repair it was to reattach it to the board. I actually only had 1 solder joint to do (depending of which part of the button is damage it could have maybe even work with a tiny bit of hot glue). If you want to know if you have the capacity to do this repair, you can watch this video : https://youtu.be/yilEo_n_364

It’s clearly showing the inner of the Xbox One controller and how you can access the sync button to fix it. :)"

My controller was jammed to, but then became very lose over time and kept falling into the sync position and it would try to sync my controller in the middle of a game

My xbox one controller has been broken for a while.. i been using it to sync Bluetooth connection to use my moga controller through hardwire .. the panel where the bumpers and sync will be is off from being broken .. the sync button fell out and had a clean remove where three metal connectors will be on the board .. use a small and thin flat head screwdriver . Gently place on the three connectors and move side to side left to right. it will turn on sync mode for you