HEY! I SOLVE THIS!
I don't know if you already solve this problem, but, I gonna post a tiny text if someone visit this forum for a help.
Like many pro controller users, you probably must have used the pro controller to play on a Switch or Wii U emulator. If I'm right, my solution is for you.
You probably used BetterJoy so that the control can be configured on the emulator. This software is perfect, because it is possible to use even the gyroscope!
However, it installs certain drivers on Windows that end up getting in the way if you want to use the pro controller on Steam, for example.
I had the same problem as you, and the solution I found was:
follow this path >> \ BetterJoy_v6.4a_x64 (BetterJoy Folder) \ Drivers \ HIDGuardian \ >>> right click on it (Uninstall) >>> run as administrator >>> wait to finish >>> restart the PC and if you want to also take out the bluetooth adapter and disconnect the controller >>> connect the controller again >>> check if the controller appears as "Wirelless Gamepad" in the controller settings ("joystick" on search star menu)