What to do if Firefox won't play any sounds

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This article describes what to do when you can't hear sound in Firefox.

Check the Volume Mixer

  1. Open Firefox and play content that should play sound, such as this Firefox video.
  2. ClickRight-click the volume icon in the Windows taskbar.
  3. Click MixerOpen Volume Mixer. The Volume Mixer window will appear.
  4. Make sure the slider for Mozilla Firefox is not muted or at the bottom.
VolumeMixer-Win7Win10 Volume Mixer

Check your audio device

Make sure that the audio device (such as speakers or headphones) are turned on and connected to the computer properly.

Other solutions

Check out whether other applications on your computer can play sounds. If they can't:

If Firefox is the only application that you can't hear sound in:

Make sure other applications on your computer can play sounds. If Firefox is the only application that you can't hear sounds in:

If no application can play sounds:

Make sure other applications on your computer can play sounds. If Firefox is the only application that doesn't play sounds:

If you can't hear sounds in any other applications:

  • Make sure that the audio device (such as speakers or headphones) are turned on and connected to the computer properly.

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