Firefox Support Forum

As of recently, every time I try to watch someone on Twitch, where the video feed would normally be is the streamer's offline banner image. Chat is working fine, and is active despite the stream not being displayed on my end. If I check the Twitch mobile app the stream displays as normal, so I know they are currently streaming. I tried disabling all of my add-ons and restarting the browser to no avail. I am a noob, so please be patient with me. I have attached images of an example, but this happens with any live channel, not just ones I am following (I do not have any active subscriptions as far as I know).

Popups for Smithsonian magazine keep appearing, sometimes 2 at a time, despite having popups blocked. I need them to stop. They are annoying and cover up content of web pages.

Hi, Please advise how to remove, disable, delete, block the new added "Your browser is being managed by your organization." to my Settings page. I'm home user .Also Please know that this is generating "FALSE FINGERPRINT CERTIFICATES" thank you

New computer, Win 11 and FF 120.0.1 all fresh installed and updated with latest versions. The double line spacing in bookmarks and all other menus is back. There was a fix for ver. 89 with the css file trick, but that DOES NOT WORK with this version. All other options I've run across don't work either. Why do the Mozilla software engineers think it's a good idea to break their flagship application every few years? Rhetorical question, I know.

Does anyone have a user fix that actually works with this FF 120.0.1 version? Something an experienced user can do that is not a programmer. analyst or engineer? I've been using FF since it first came out to challenge Microsoft's IE. Late '90s? I'd like to keep using it but this is too annoying to tolerate.

If anyone can help with step by step instructions, I would be eternally grateful.

Firefox on my mac has recently started displaying strange text in any windows where the browser itself chooses the font. I verified that the font settings are default, and the issue persists. Screenshots attached, any ideas?

Only my mac has this issue, my iPhone, as well as two Windows PCs all on the same account do not present with this.

The puzzle piece icon is not on the toolbar. Neither is it shown in the customize toolbar dialog. I have reset the toolbar to default, rebooted Windows 11 and removed & reinstalled Firefox 120.0.1 (64 bit). Those did not work. How can I restore the puzzle piece icon to the toolbar?

I had 2 windows open, closed one, lost all of my tabs. Restore didn't work. I tried to restore by renaming session-store-backups folder files. doesn't work. There is a file called upgrade.jsonlz4 from November, maybe that could be used to restore tabs somehow?

Open this url https://openfde.com/intro.mp4 and firefox shows "video can't be player because this file is corrupt".

Web Console logs: ``` Media resource https://openfde.com/intro.mp4 could not be decoded. intro.mp4

Media resource https://openfde.com/intro.mp4 could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_DECODE_ERR (0x806e0004) Details: void mozilla::AppleVTDecoder::OnDecodeError(OSStatus): OnDecodeError:ffffcd9a intro.mp4 ```

`ffmpeg -i` with this video file: ``` Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/to/intro.mp4':

 Metadata:
   major_brand     : isom
   minor_version   : 512
   compatible_brands: isomiso2avc1mp41
   encoder         : Lavf58.76.100
 Duration: 00:01:51.77, start: 0.000000, bitrate: 3243 kb/s
 Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 4096x2304 [SAR 1:1 DAR 16:9], 3109 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
   Metadata:
     handler_name    : ?Mainconcept Video Media Handler
     vendor_id       : [0][0][0][0]
 Stream #0:1[0x2](eng): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
   Metadata:
     handler_name    : #Mainconcept MP4 Sound Media Handler
     vendor_id       : [0][0][0][0]

```

Chrome is fine.

Firefox use to keep me logged into Asana. But after deleting my browser cache a while back, it no longer does. Even though it still keeps me logged in to other sites I go to.

I have already tried to get help with this on Asana's help forum and a computer help group on FB. As well as from researching on google. I have tried everything they told me to do and it still isn't keeping me logged into Asana. I am completely baffled as to what it stopped keeping logged in. But I know it had to do with deleting my cache because it did it right after that when I tried to log back into Asana. It never kept me logged in again.

When I deleted my browser cache I made sure to not check the one that said it would log me out of website if I check it. I didn't delete that, I just deleted the other stuff that was in the gb range. So I don't know why every time I delete my cache it still logs me out of all website anyway even though I uncheck that.

Yesterday I reset firefox back to its default settings, but that didn't help either.

Any ideas what else I could try before I uninstall firefox and reinstall it. I have backed up my bookmarks, but the last time I had to import my bookmarks when I got a new computer it did not import them correctly and it made a mess out of my bookmarks and didn't even save my browser toolbar stuff. So reinstalling Firefox is my last option.

Hello, can you add better support playback on .mp4 videos? Seems with Firefox it's a hit-and-miss with some .mp4 videos that will play and some that will just show "No video with supported format and MIME type found".

All other browsers will play .mp4 videos without an issue but Firefox won't.

If you can provide better .mp4 playback support that would be greatly appreciated. Thanks

Here's one of those videos for an example: https://drive.google.com/drive/folders/1Fv6SdftiCXeYPQOdF17H2JNpwjMu9P7q

Pretty much a URL string like example.com/videosample.mp4

I am using Firefox 120.0.1, and I have difficulty to take screenshot.

I tried to press shortcut key and button in toolbar as shown in the attached image, but they didn't work.

Is there any good way to fix this problem without reinstall firefox app?

Hi!

I'm on a newer laptop with an AMD CPU (with its own integrated GPU) and an Nvidia GPU.

When changing Firefox to "High performance" mode in the Windows 11 settings (System > Display > Graphics), it is said to use the dedicated Nvidia GPU. However, to my surprise, this is noticeably more stuttery and laggy than having it use only the integrated AMD GPU ("Power saving" mode).

Additionally, Firefox's hardware acceleration (General > Performance) is set to "use recommended", and my Windows 11 Power mode (System > Power & Battery) is set to Balanced.

I was wondering what the best way to configure all these settings is, such that it takes advantage of my hardware as much as possible? I wish to understand more than simply switching options until Firefox looks the smoothest to my eye --- what do these settings actually do, and how should they be configured idealistically?

I also sometimes run Linux, where things are a bit more complicated (e.g. Nouveau vs proprietary drivers, PRIME, etc) so I understand if the answer is less certain in that environment, but any info for it would be great as well.

Thanks!

I have read through all 3 of the following posts linked below on this issue, and cant make it out.

I am trying to move the find bar to the top of firefox. Tried the really long codes suggested, and the short ones. Yes, I enabled "true" in the config settings. Added the chrome folder and text file, I think in the right section. Restarted firefox lots of times upon each code I tried, still not working.

Any ideas? thanks!

https://support.mozilla.org/ig/questions/1372399

https://gripfastistech.com/index.php/blog/82-move-findbar-to-top-firefox-69.html

https://www.reddit.com/r/FirefoxCSS/comments/11odffm/psa_incoming_changes_to_default_element/

Hello,

i just can't download anything on Firefox anymore for no reasons. I do not have Parental Control I tried to download attached files from mails with no success i tried to download a software called Alecaframe for a video-game without success too. I already tried to modify the download folder, to reinstall, to repair firefox with no success.

Videos can't be played at higher playback speed Bug

On firefox, I cant play videos at higher playback speed or it'll only play audio or video will endlessly buffer. Using user-agent spoofer and changing to chrome makes it a little less worse but still the problem sustains. On Brave, the video doesnt have any effect of higher playback speed rather it'll make the video buffer and have very strong red contrast.

I set the browser to Open previous windows and tabs at restart, on General settings, but it always opens blanc, not saving any tab from the previous session.

How can I correct this issue, if it is one, please?

Fake MCAFEE SECURITY ALERT KEEP POPPING UP in the last 24 hours. How do I get rid of this? I do have McAfee and ran a scan. Scan results no virus. I do not want to lose the current tabs session that I have open, if possible??????