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no sound youtube

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I have five browsers that I sometimes use. Firefox is the only one that will not play audio from youtube. I get sound everywhere else but not youtube. I have tried everything to get the sound back but nothing helps. It started yesterday with a Firefox update. can someone help?

I have five browsers that I sometimes use. Firefox is the only one that will not play audio from youtube. I get sound everywhere else but not youtube. I have tried everything to get the sound back but nothing helps. It started yesterday with a Firefox update. can someone help?

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Flash Player Version 19.0.0.185
https://www.adobe.com/products/flashplayer/distribution3.html
Note: Windows users must download the “Internet Explorer” and “Plugin-based browsers” installers.

Note: Edge on Win10 does not use ActiveX version but its own Flash.

See if there are updates for your graphics drivers https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

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