Did you look at the mic/cam setting in "Tools -> Page Info -> Permissions" ?

• https://support.mozilla.org/en-US/kb/firefox-page-info-window

That does not seem to be working. Even with that overwrite I can't cut the mic on while using Discord. It's enabled and yet it seems to not work.

What do your sound settings look like. See screenshot Do you get the prompt asking to allow discord? What are your options if you get the prompt?

I can't un mute. That is the problem. It never asks me to allow the mic and it will not un mute.

Did you try Firefox in Safe Mode? Try under a different windows account. Are you on a laptop desktop? If laptop, does the internal mic work?

Desktop and this mic is used for YouTube. It works on Audacity and OBS so it's a working mic. Normal and private windows do not work. So this is really odd. Mic also works on Chrome so something weird is going on. Thank you all for trying to help with this mess.

Show a similar screenshot. What happens when Firefox is in Safe Mode not Private?

Safe mode did not do much. Still getting that unsupported error.

What version of Windows are you running, Home or Pro? What security software are you running? Looks like something is in between your browser and Discord because the site is saying your browser is unsupported. Interesting...

It should be a home version of Windows 10 and Avast is being used.

Can you disable Avast, reboot and try again.

That might work.

Still being weird unless I should disable a few more things. Anything you think I missed?