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Firefox lost audio connection with Windows 10 (YouTube)

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  • Last reply by jeyson1099

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Interestingly, today after changing motherboards and my old hard drives after my old MB died. Windows 10 reconfigured everything for audio except Firefox. After a lot of troubleshooting using various methods with no success (as all other aspects of windows 10 audio were working perfectly), I eventually stumbled upon a solution that finally worked for me.

In Windows 10, there is an app that varies individual app volume that eventually fixed my issue and i thought it best to post here for others, if they also have this particular problem.

All i did was the following:

1. Do a windows search for "App Volume". This will display Sound Mixer Options. Select it.

2. In the App Volume and device preferences screen that appears, go to Mozilla Firefox.

        a.  Ensure Volume is at a setting you prefer. 
        b.  Output/Input are most likely showing Default.  Mine did but YouTube video's still had no sound.
             Change the Defaults to the same as the Masters at the top of the window and try your audio.
             Mine started to work again at this stage.  After i confirmed everything was working again, i changed
             Mozilla Firefox Output/Inputs back to Default and it continued to work perfectly.

Please note that I made sure all my OTHER audios were working first with W10 before doing this, ensuring everything was functioning properly. ie. Other browsers were playing youtube videos with sound, playing an audio music file, etc

Interestingly, today after changing motherboards and my old hard drives after my old MB died. Windows 10 reconfigured everything for audio except Firefox. After a lot of troubleshooting using various methods with no success (as all other aspects of windows 10 audio were working perfectly), I eventually stumbled upon a solution that finally worked for me. In Windows 10, there is an app that varies individual app volume that eventually fixed my issue and i thought it best to post here for others, if they also have this particular problem. All i did was the following: 1. Do a windows search for "App Volume". This will display Sound Mixer Options. Select it. 2. In the App Volume and device preferences screen that appears, go to Mozilla Firefox. a. Ensure Volume is at a setting you prefer. b. Output/Input are most likely showing Default. Mine did but YouTube video's still had no sound. Change the Defaults to the same as the Masters at the top of the window and try your audio. Mine started to work again at this stage. After i confirmed everything was working again, i changed Mozilla Firefox Output/Inputs back to Default and it continued to work perfectly. Please note that I made sure all my OTHER audios were working first with W10 before doing this, ensuring everything was functioning properly. ie. Other browsers were playing youtube videos with sound, playing an audio music file, etc

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Hello. This article will help you determine whether an extension, theme or hardware acceleration is causing your Firefox problem and, if so, describes what you can do to make Firefox run normally again. Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems.

Firefox and some plugins use your graphics card to help speed up the display of web content. Graphic cards are also used by advanced web features like WebGL. To fix problems with these features or to take advantage of them, you may need to update your graphics card drivers. This article describes how to do that. Upgrade your graphics drivers to use hardware acceleration and WebGL.