My PC detects PS4 controller as an audio device
Solution 1:
After plugging it in, try going to "set up USB game controllers" in control panel. (also can be searched with Cortana). If a controller is listed, click properties. See if it is recognizing your inputs. If it is recognizing your button pressing, you should be good to go. From here I used DS4 Windows to configure the controller. Set your actual audio device as default, that way the controller doesn't prevent you from hearing audio.
Solution 2:
Simply disable the controller audio device from Audio Device Settings, it worked for me.
Solution 3:
I found this on answers.microsoft.com: (thank you Kapil Arya) The below worked instantly and error free for me:
*To use your PS4 controller as a game controller, you would need to download a driver for it.
- Download the driver on this link: https://github.com/Jays2Kings/DS4Windows/releases/download/v1.4.52/DS4Windows.zip
- Extract the content of the compressed folder to a new folder that you will create.
- Double click on the DS4Windows.
- Click on Program Folder to install the drivers and your PS4 Lightbar should lit up blue. Note: Each time that you will use the controller, you would need to open the DS4Windows app first.*