Q: Headphones don't work on Windows 10

There are not yet any Boot Camp Windows 10 drivers.

Windows 10 is not yet supported on Bootcamp.  There are no Win 10 Bootcamp drivers. If the win 7 or 8 drivers do not work for you, there's not much to do other than wait for Apple to release Windows 10 Bootcamp Drivers.

https://discussions.apple.com/thread/7154056

1. Right click on the sound icon on the task bar

2. Click playback devices

3. Left click on the headphones, then click on properties

4. Go to advanced

5. Select: '2 Channel, 16 bit, 44100Hz (CD Quality)' as the default format [note that others might work depending on your mac]

6. Test and it should work, then click apply and you're done.

Hope it helps, tried this on a MBP 13" Retina late 2013

Can confirm that this DOES NOT work on the MacBook Air (Mid-2013). Might as well wait for official drivers.

Official drivers are out. Run the Apple Software Update program and it will update to the official Bootcamp 6 which supports Windows 10. Make sure your device is listed in the officially supported ones.

https://support.apple.com/en-gb/HT204990

Thank you! I'm not using Bootcamp but this finally fixed my issue after trying every single other solution online, using Windows 10 and headphones.