Why does my Xbox controller randomly start blinking?

Hi SPARTAN0188, my name is Rodrigo. I'm an Independent Advisor and a member of the Microsoft community and I'd love to assist you today.

I am sorry to hear that.

Please, reset your controller pairing.

To unpair it, press and hold the pair button on top of the controller for a few seconds until it vibrates twice.

Then, pair it again.

Turn on your controller by pressing and holding the Xbox button.

Press and release the Pair button on the Xbox.

Within 20 seconds, press and hold the controller’s Pair button a circular button on top of the controller as you hold it in your hands) until the controller's Xbox button flashes a few times.

That means it's searching for a console.

The Xbox button stays lit once it's connected.

I hope this helps.

Ok, so does that mean I have to "re-pair" the controller with an Xbox first and that's why it isn't blinking on its own? That would mean the controller is working perfectly fine and it's normal that it doesn't blink when pressing the Xbox button after using
it on a pc?

i'm just a bit confused because i've looked all over youtube and google but i couldn't find anyone else that had the same issues. because when they press the sync button on their controller it starts blinking but my controller doesn't do anything at all, it's like just that one button stopped working and all it does is do the slow blinking the controller does after you power it on.

Which games, and what is the model of TV you’re using? Are they just appearing randomly like a blinking light on the control panel?

Same issue as others; brand new Carbon Black controller setup via Bluetooth. Randomly disconnects during gameplay. Works fine but every 10 minutes or so it starts blinking and I get a message on screen saying the controller is disconnected, please use mouse and keyboard. Very disappointing.