Is this with all websites/pages, some, a few?

What were you doing at the time? surfing, watching a clip, reading something . . . .

When/how often does this happen?

Start Firefox using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?

To be honest I can only find one page that media keys will interact with even in Chrome, and that's YouTube, but that's the reason I use them, I use YouTube for studying and have to pause videos frequently

In short, nothing. I went to bed on Saturday night and the media keys were working, came back Sunday morning and the media keys no longer worked, computer was locked overnight, and did not restart. Tried a restart (both computer and Firefox) and no change

They start/stop working whenever it wants, can be a couple hours, can be months. This time that it started working again was the first it had worked in around 6 months, but I don't test it often since it never seems to work.

Attempted to start Firefox in Safe Mode, no change as well, restarted back into standard mode, still no media keys "media.hardwaremediakeys.enabled" still set to true

I called for more help.

@FredMcD did you have a follow up? Issue is still ongoing.

I called for help. That's all I can do.

Pinging post, issue continues

i'm facing the same issue, except that the media keys have never worked for me in this browser.

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