Firefox Community Forum

Audio doesn't work with Firefox. This appears to be ONLY a Firefox problem. Headphones work with Edge. Computer speakers work. In Windows settings, testing audio works. But when I attempt to listen to something in Firefox, there is no sound at all.

I have to unmute my mozilla in the volume mixer at least 7 times now in a span of 4 hours. Already tried the permission thing with autoplay and put it on allow audio and video and it's still randomly muting itself when things aren't even auto playing.

While typing this thing it muted itself again and nothing was playing. I'm so close to uninstalling this browser and going full on opera, or just eat up the cost and just buy 2 more sticks of ram and go google chrome.

Hello people,

Please some help around the following issue, since a few days, Firefox will not play mp4 files directly in the browser. What it does when clicking to open an mp4 from the file server, it saves the file first and then opens a window to play it. Or it directly provides the save dialog window instead of playing it in the browser window directly.

Any ideas, appreciated. I have a lot of files to assess for my students, and this browser behavior makes it very tedious.

Greetings.

Can't seem to stream Netflix. Firefox is up to date. New Widevinecdm update today 4/2/2025. Apparently since that update (today) I can't stream. I get Netflix error code F7702-1003. Searched/read several FF articles/forum Qs - no help. did a "refresh FF" - no help. don't want to install Chrome (Google knows too much about me already). Netflix worked fine last night. Tried unchecking "play DRM controlled content" - FF(Netflix site) asked to enable DRM - clicked ok - reinstalled. no help. Hard reboot - no help. Still running a Win7 64-bit desktop OS - works fine.

HELP!! Thanks

Having issues with my Bluetooth AirPods and sound in Firefox. The problem being there is no sound when the device is connected and watching a YouTube video for instance. Things went wonky after the recent update to 133.0.3. At first there was no sound period. Then somehow, not even sure how, I saw that Firefox was muted in Windows (11 Pro) settings. That's a mystery unto itself since I'd never previously gone to that area. Now that I have volume through external speakers working, audio through AirPods doesn't. Everything works fine using Edge and audio from music. I know the device is connected and when that is, it's the default for where sound comes from. Used the test thing and yup there is audio. Is there something I'm missing? There must be but I can't figure out what it is. Hopefully someone reading this can point me in the right direction of resolving this issue. Thank you in advance.

Video files won't play on the msn.com website; the same videos will play on another browser, but not on Firefox. What do setting I need to change?

Thank you.

I've freshly reinstalled Windows 11 and after trying to access and watch a movie on any of these sites I get an error (see the pictures).

Browser version: 137.0.1 (64 bit) Widevine version: 4.10.2891.0

Already tried to disable/enable DRM. Already reinstalled firefox. Already manually installed widevine. No clue what could be causing this issue.

FireFox updated to 136.0 (64bit), running on Winders11. Youtube does not play video. No error messages. no audio no video no buttons to click on to start. I really need to get this running. Your help is much appreciated. Thanks Stan W8SRD

So, I cannot get sound through firefox and you want me to search through numerous panels that do nothing to get a result., You want me to check connections and equipment that work in other apps which I have already gone through steps to prove.

You also have zero ability to actually contact a support rep. You prefer I go on the roundabout of obfuscation until I really want to find someone in mozilla management and insert the mozilla organisation on a long pole, five km should about do it.

If microsnot and giggle can do it, why not youhoo?

Even Spymantech can bleep bleep get it done.

MP4 Not loading:

I have uploaded a few MP4 animated images to our website, but they are not loading in the Firefox browser. It looks like they are getting corrupted. This issue only occurs in Firefox. I’ve also attached screenshots for reference. Can someone help me understand why they are loading like this?

We're finding we can no longer watch FUBO TV on Firefox. Works fine in Edge. Anyone have any suggestions? We've cleared cache/history, restarted laptop, etc. This occurs both on recorded programs and live tv. We still seem to be able to get the commercials, although we tried watching on two different devices and the commercials were very different. Is it possible for Firefox to have been hacked but not Edge on the same device? Doesn't sound plausible to me, but I'm not sure. This has happened since the last update to Firefox. We have Windows 10 64 bit. Firefox 134.0.2 or whatever the latest version is. We're stumped why it works on one browser but not the other. Has to be a Firefox issue.

I followed [article] ten realised that at the top it recommends not using quick time so uninstalled it,

however, after uninstalling quicktime, the browser plugin did not appear so it would not have worked anyway.

What solutions are there to this?

when accessing my voicemails for work, I need to access their online storage and listen from there. I used to use chrome and there were no issues. now, using firefox, I am being told to install Quicktime My understanding is that chrome uses NPAPI plugin. is there something similar on firefox?