If you are using a generic USB controller or a Gamecube adapter, this driver is necessary. However, if you are trying to connect an Xbox, PS4, or PS5 controller, . Windows 10/11 natively supports Xbox controllers, and PS4/PS5 controllers work best with DS4Windows (Steam Input also works natively for most games).
If your joystick is not appearing in your game's controller settings, you can manually install the driver following these steps: Download the File usb network joystick driver 370aexe 12 hot