Hi all,
in my case solved as following:
- Install on PC app Xbox Accessories
https://www.microsoft.com/store/productId/9NBLGGH30XJ3
- Connect controller to PC via microUSB
- Update firmware in controller
- During update remove if exist already Bluetooth paired Xbox controller
- Pair via Bluetooth
- Paired and working correctly same as always worked before
It is very strange as it was working all the time until my son connect Xbox controller to another PC via cable then it was impossible to pair again to original PC via Bluetooth. Anyway working again with steps above...
Good luck and let me know pls if it helps....