What to do if Firefox won't play any sounds
Revision Information
- Revision id: 17969
- Created:
- Creator: AliceWyman
- Comment: Updated "Unmute Firefox instructions" for fx7 and above - see discussion
- Reviewed: Yes
- Reviewed:
- Reviewed by: AliceWyman
- Is approved? No
- Is current revision? No
- Ready for localization: No
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Revision Content
This article describes what to do when you can't hear sound in Firefox.
- Before using the instructions in this article, make sure other applications on your computer can play sounds. If Firefox is the only application that you can't hear, continue to the troubleshooting steps below.
- If you want Firefox to make a "click" sound effect when you click on a link, and to use other small sound effects when you browse web pages, try the Navigational Sounds extension.
Unmute Firefox
Note: This section only applies to Windows Vista or 7.
- Open Firefox and play two kinds of video that should play sound:
- One on a website that uses plugins, such as YouTube.
- One on a website that doesn't need plugins, such as Firefox videos page.
- Click the volume icon in the Windows task bar.
- Click Mixer. The Volume Mixer window will appear.
- Make sure the Mozilla Firefox and Plugin Container for Firefox sliders are not at the bottom.

- Open Firefox and go to a website that includes sound, such as the Firefox videos page.
- While the sound is playing, click the volume icon in the Windows task bar.
- Click Mixer. The Volume Mixer window will appear.
- Make sure the Mozilla Firefox slider is not at the bottom.

Other solutions
If you're still having trouble hearing sound, follow the instructions in the Fix common audio and video issues article.