The sync button on my xbox series x won't flash to connect a new controller

My sync button turns off my Xbox one X and won't connect any controllers.

When controllers do connect they disconnect and flash.

Had this problem since beginning of February.

Sync the Controller:
To sync a wireless controller with your Xbox, follow these steps:

Press the Xbox button on the controller to turn it on.
Press and hold the small sync button on the front of the Xbox Series X console (located near the USB port).
While holding the sync button on the console, press and hold the sync button on the controller (located on the top near the Xbox button).
Release both sync buttons when the controller's Xbox button starts flashing. The controller should now be synced with the console.

Hello ÚÑKÑØẄÑ ©, My name is David. I am an independent advisor, happy to help you today.

I'm sorry you're experiencing this issue with your Xbox Series X controller. Here are some possible solutions you could try:

Restart your Xbox console: Press and hold the power button on your Xbox console until it turns off. Next, disconnect the Xbox Series X from its power source. Turn off the Xbox controller and remove its batteries. Finally, connect and turn on your Xbox Series X.

Restart the controller: Press and hold the power button on the controller for several seconds until it turns off. Then turn it back on.

Pair the controller with the console again: Press and hold the sync button on the console until the power button flashes. Then, press and hold the sync button on the controller until the lights on the controller flash.

Best regards.

My name is Fernando I'm an independent consultant, I'm happy to help.

Try this procedure, hope it helps: Plug the power cord back into your Xbox Series X|S; Turn on the control; Press and hold the sync button on your Xbox Series X|S; Press the sync button on the controller until the time it starts flashing rapidly, then release it.

Hope I helped and see you soon

Hello Hyer, my name is Khaji I am the independent advisor and I will be happy to help you today.

Sorry to hear that you are having problems with your Xbox X Series. Here are some steps you can take to troubleshoot the controller sync issue.

- Try a wired connection: use a USB cable to connect your controller to the Xbox Series X and see if it connects. If it does, you can try syncing wirelessly.

- Press and hold the sync button on the back of the controller for 15 seconds until the Xbox button starts to flash, then release the button. Turn off and unplug the Xbox X Series for a few minutes, then turn it back on and try to sync the controller again.

Update your controller firmware: If your controller firmware is not up to date, you may not be able to connect to the Xbox X Series. To check for updates, navigate to Settings > Devices and Accessories > Xbox Wireless Controller > Device Information and see if a firmware update is available.

- Try a different HDMI cable or port: A faulty HDMI cable or port could be the cause of the Xbox home screen not displaying on the TV.

- Check your TV settings: make sure the HDMI port to which the Xbox X Series is connected is set to the correct input on your TV.

Best regards, Khaji