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No sound in Firefox only.

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No sound in firefox only. Videos play fine, just no sound. I've tried everything I've found on here.

I tried refreshing. I tried deleting the C:\Users\UserName\AppData\Roaming\Mozilla\firefox folder and reinstalling. I usually keep flash disabled, I even tried enabling it.

Sound works fine in everything else, opera, internet explorer, it's only this one browser. It used to work fine. I rarely watch videos with firefox so I'm not sure how long it's broken.

No sound in firefox only. Videos play fine, just no sound. I've tried everything I've found on here. I tried refreshing. I tried deleting the C:\Users\UserName\AppData\Roaming\Mozilla\firefox folder and reinstalling. I usually keep flash disabled, I even tried enabling it. Sound works fine in everything else, opera, internet explorer, it's only this one browser. It used to work fine. I rarely watch videos with firefox so I'm not sure how long it's broken.

Chosen solution

This turned out to be a minor symptom of a larger problem.

Due to installing windows 10 under a win7/win10 dual boot setup, and using the same user folder for both OS's, the security settings for said user folder got messed up and caused a recursive error that created endless "application data" folders, each inside the last.

So I wiped the C: drive and reinstalled the OS. I would've gone much faster if MS wasn't sabotaging windows update for win7 but I found the right ones to manually install and all is good now.

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Chosen Solution

This turned out to be a minor symptom of a larger problem.

Due to installing windows 10 under a win7/win10 dual boot setup, and using the same user folder for both OS's, the security settings for said user folder got messed up and caused a recursive error that created endless "application data" folders, each inside the last.

So I wiped the C: drive and reinstalled the OS. I would've gone much faster if MS wasn't sabotaging windows update for win7 but I found the right ones to manually install and all is good now.