You should update your driver to see if this is able to resolve your problem. Your Stereo Mix may not be working properly if you’re using a wrong sound driver or it’s out of date. After that, check to see if your Stereo Mix works normally. Connect your sound card directly to your speakers and set up the proper output. To use Stereo Mix, you should make sure your computer sound is coming from your sound card. If your sound is sent around the sound card (using HDMI to output video and audio together, for example), your Stereo Mix is unable to work. To ensure your Stereo Mix works well, all your audio output has to go through your sound card so that it can record the output. Method 1: Make sure your computer sound is going through your sound card You don’t have to try them all just work your way down the list until you find the one that works for you.
The following are a few methods that have helped many users. If you’re also experiencing this Stereo Mix not working issue, don’t worry. Their Stereo Mix isn’t working properly and they can’t use it to record the audio they play on their computer and share it with their friends. Many Windows users are having issues with their Stereo Mix.