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Hi there,

I wrote a review for the Android version of Firefox after which I was re-directed to report the issue here. So for the last couple of months, I started to notice that Firefox (Android) lags/stutters severely when browsing through youtube, not watching videos, just scrolling through the video feed. Even after the page has loaded with all the videos, scrolling lags/stutters significantly, and it only happens when browsing youtube, haven't had this issue with any other site on Android using Firefox. I'm not using any extensions on Firefox in case that would impact it somehow.

I've updated and also re-installed Firefox on my android phone in the hopes that it may fix the problem, but unfortunately it didn't.

That said, I do use Firefox on my desktop, with plenty of extensions installed, and haven't run into this same issue with youtube.

Android OS version: 7.1.1 Mobile: SM-J250F (Samsung Galaxy Grand Prime Pro) Firefox version: Latest

Video preview of the lag/stuttering can be seen at the link below: https://youtu.be/zXBNmeC5IQY

Kind Regards

"Is there a way to disable or limit automatic tracking of websites in Firefox? I want to ensure better privacy without affecting my browsing experience. Any tips or extensions that can help?"

This will get you helpful insights from others who might have similar privacy concerns.

I am in cape Verde and using Exprees VPN. I cannot access BBC iPlayer with Firefox (my default browser). But I can access it with safari. I am on a MAC laptop (Sonoma)

I can't seem to update to the latest version of Firefox.

Steps on macOS 15.2: 1. In previous version of Firefox, get dialog to update to current version of Firefox 2. Click Restart to update Firefox. 3. Enter admin user name and password to allow Firefox to install a helper 4. Got a request to let Firefox access my devices. My devices are not Firefox's business, so I replied Don't allow. Note: 3 and 4 may have been swapped.

Expected result: Get a dialog that Mozilla corp has installed something; Firefox relaunches with the new version

Actual result: Get a dialog that Mozilla corp has installed something

Attempted workaround:

5. Click Firefox icon in the dock

Expected result: Firefox launches

Actual result: Get dialog asking me to enter admin user name and password to allow Firefox to install a helper.

6. I do so.

Expected result: Get a dialog that Mozilla corp has installed something; Firefox relaunches with the new version

Actual result: Get a dialog that Mozilla corp has installed something

Attempted workaround:

7. Click Firefox icon in the dock

And I get a strange feeling of deja vu as the process repeats and I am unable to launch Firefox.

If I look at the macOS console and filter on Mozilla, I notice these two messages from org.mozilla.updater:

1. Server doesn't exist or doesn't provide correct selectors.
2. Failed to connect to update server after several retries.

I have no idea how to proceeed.

Due to a technical issue, I've deleted Firefox and re-downloaded it. However, the SHA hash doesn't match. shasum -a 256 [path]/Firefox 134.0.2.dmg shows a hash of:

c87eade89ddf5d1996766840809b5d415d91ecb696326b4f1f92210200978d21

but that hash doesn't show anywhere on https://releases.mozilla.org/pub/firefox/releases/134.0.2/SHA256SUMS

mac/en-US/Firefox 134.0.2.dmg shows a SHA sum of:

7832a8d1e1a13322dec1b52d32e1e64d2b6254de8348575f2d22af4975d56a85

which is completely different.

I re-downloaded it, this time from https://www.mozilla.org/en-US/firefox/all/desktop-release/osx/en-US/, and this time the SHA sum is:

47e1c3b84e79d331842ccf994be56cd423126eaca6acfd1664d668cf48f98de0

which is yet different, and is also not found on https://releases.mozilla.org/pub/firefox/releases/134.0.2/SHA256SUMS

What's going on? Why can't I get a matching SHA sum?

I've recently done a clean reinstall of Windows 11 and have noticed that, only for firefox (134.0.2, build ID 20250120135430), a few videos playback without any audio, yet the same videos play with audio when using edge as a comparison. Most (if not all) of these videos did play with audio in firefox prior to this reinstall.

Firstly, I'm pretty sure this is not a windows sound mixer issue since many videos on the same page and tab play back with audio just fine in firefox. The same goes for it not relating to the firefox setting 'Speaker selection', under (burger) > settings > privacy & security > Permissions because videos of different formats (or using different players) on the same page play back audio fine. The tab is not muted. Again, some videos on the same browser tab play audio fine; some of a particular format or player only play the video, while missing the audio (and where Edge plays the same video with audio).

Another common and potentially relevant issue I've seen is that, this being a 'Windows 11 N" install, it was initially missing the settings > system > optional features > Media feature pack, but that is now something I've successfully added. I should add that windows did report problems when I initially tried to add the media feature pack but, after a very long delay, it eventually appeared to succeed when I ran a couple of DISM incantations that I think ended with - "dism /online /add-capability /capabilityname:Media.MediaFeaturePack~~~~0.0.1.0"

I have the 'Play DRM-controlled content' setting enabled.

Comparing the firefox vs edge video playback on this video test page - https://tools.woolyss.com/html5-audio-video-tester/ I get the following results (don't know how to get it formatted/aligned correctly, sorry) -

                           FF vid    FF audio    Edge vid    Edge audio
av1-opus-sita.webm          Works     Works       Works       Works
vp9-vorbis-spring.webm      Works     Works       Works       Works
vp8-vorbis-sintel.webm      Works     Works       Works       Works
avc-aac-nerdist-friends.mp4 Works     MISSING     Works       Works
avc-aac-big-buck-bunny.m4v  Works     MISSING     Works       Works
avc-mp3-sita.mov            Works     Works       Works       Works

And perhaps also relevant is that there's also a difference in the audio-only samples further down the table on the same page -

                   FF audio   Edge audio
audio-sample.mp3    Works      Works
audio-sample.weba   Works      Works
audio-sample.ogg    Works      Works
audio-sample.opus   Works      Works
audio-sample.flac   Works      Works
audio-sample.wav    Works      Works
audio-sample.m4a    FAILS      Works
ac192.mp3           Works      Works
spoonradio-hd.aac   FAILS      Works
audio.opus          Works      Works

Also, every 'v.redd.it' / reddit-video-player video plays the video fine but has no sound when using firefox but plays both sound and video fine with Edge. Here's one for example - https://old.reddit.com/r/funny/comments/1i7y1nr/rock_paper_scissors/

I've seen lots of similar (but not identical) issues on firefox video with no audio problems with suggestions a few things to try. In addition to what I've already mentioned above, I've tried the following without success -

- Restarting windows - Restarting firefox - Restarting firefox with addons/extensions disabled - 'about:support' > Refresh firefox - 'about:support' > Clear startup cache - (hamburger) > more tools > task manager > (click the little profile icon for the page playing the video) - I've checked the settings suggested here: https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues#w_check-some-firefox-settings

I realise it may be possible to side-step this problem by flailing around with more drastic work-arounds like trying a clean re-install of windows or a full uninstall and clean of firefox, but that doesn't really help figure out the problem, which leaves the possiblity it could easily happen again to me or others when it might be something that can be more properly fixed or guarded against in firefox itself, so I hope someone can suggest what might be done to home in on identifying the cause of the problem and so learn whether a more precise fix can be employed.

The search bar triggered by ctrl+f at the bottom of screen changes the screen size, which is annoying when browsing responsive pages and every element in the page shakes.

Similarly, in fullscreen mode, hovering at the top of screen reveals the address bar, which let the whole page scroll down 1cm. This is also visually annoying.

Is there any way to prevent such kind of hypersensitive screen resizing?

Unknown Source hacked my mobile phone via Wifi Router by the help of other unknown tools. My personel data has been shared to others as well. Please would like to track them down and delete all my data which has been stolen by them and still it is been shared

As the title says, all Google accounts keep getting logged out after I close the browser. However, if I am logged in with another app associated with the Google account, it doesn’t get logged out. What’s the issue here?

Delete cookies and site data when Firefox is closed is Unchecked

Proszę specjalistów o pomoc co mogę zrobić, aby Thunderbird szukał również w treści załączników tekstowych np. PDF, jak np. eM Client, który ma tą funkcję, ale jest znacznie mnie elastyczny i gorszy jeśli chodzi o sprawy konfiguracyjne niż Thunderbird, ale szukanie w załącznikach działa idealnie.

Czy są jakieś dodatki w Thunderbird, abym mógł szukać w załącznikach bezpośrednio w programie w jego wyszukiwarce? Nie chodzi o szykanie poza programem.

Zależy mi na wygodzie użytkowania i skoncentrowania pracy w Thunderbird.

Pozdrawiam :)

iCloud has stopped signing in on the Firefox browser for Windows. I contacted Apple Support and they told me that this is an issue on Firefox's part, and told me to try signing in the next morning and they guarantee it'll work. It did not. In fact, it has been over a week, and it still does not work.

When I enter my Apple ID and Password, the website gives me an error "Failed to verify your identity. Try again." The website does NOT send me to the 2fa screen, yet it still sends a 2fa code to my iPad nonetheless.

As Apple has said this is an issue on Firefox's part, I am posting this here. Attached is a screenshot of the error.

Hiya all,

Recently got a steamdeck and after downloading Mozilla onto it I went to sign into my account, however every time I enter in the verification code to log in it brings me to a screen showing the "bad request" error. I've tried clearing cookies and that hasn't seemed to help. Any other advice? Thanks in advance!

Hello, after I reinstalled Windows and Firefox itself, I had a problem with the fact that custom icons of attached sites are not displayed in Firefox, before reinstalling Windows everything was great, everything was displayed and shown, after they stopped showing even from the same resources from which I took these images and in the preview. 1 screenshot : before 2 screenshot : after