Firefox Community Forum

I have an mp4 (h264 AAC) video of 37MB which plays acceptably from my website in Safari, Chrome and Edge, but when played in Firefox (my default browser) the sound and picture synch is significantly seperated. When the video is compressed to 26MB it suffers some expected loss of sound quality but plays with near perfect lip synch. What is the issue with playback ?

Hi,

I'm on OS Windows 11 and the latest version of FF (133). I also use NordVPN; I can access the web via Edge and Chrome with VPN, but for the last month, it doesn't work with FF. What could be the problem?

Several weeks ago, I was attempting to upgrade from Windows 10 to Windows 11. In the process, I deleted Firefox (using Revo Uninstaller) and then reinstalled it, downloading it from the Mozilla website. Unfortunately, it didn’t run, giving me, at different attempts, different error messages. In the time since then, I have read many suggestions from many different websites and I have tried some of these suggestions, all with no success – until today. I have just completed the suggestions made on https://support.mozilla.org/en-US/questions/1327628 and Firefox is now back, working. I am happy and grateful, but not finished. None of my personal data came with the currently functioning version of Firefox. Since the re-emergence of Firefox, I have been reading several websites dealing with copy, backup and restore of my Firefox profile. Right now, the path C:\Users\rsuth\AppData\Roaming\Mozilla\Firefox\Profiles\ shows 5 folders: Two of the folders show 11/11/24 as the date modified (probably the date of the download from Mozilla). The folder 0dppjrfa.default contains one file, times.json, dated 8/11/2020. The other folder, ru82tlj5.default-release, has 97 items, most dated 11/11/2024. The remaining three folders are all dated 12/2/24 (today, as I write this). One folder’s name ends .default, the second name ends .default-release, and the third name ends .default-release-thirteen digits. The question that I am asking here is what do I do next to, hopefully, bring back the personal date I had with Firefox before my updating to Windows 11. Should I delete the folders dated 12/2/24? What, if anything, is the significance of the folder whose name ends in 13 digits? I’m hoping someone will be able to tell me how to fix these Firefox problems. And if I can, then I hope to be able to do something similar to help me bring back Thunderbird as well. Thunderbird became unfunctioning at the same time as Firefox. Thank you.

My laptop (a Lenovo Ideapad220s) did an automatic Windows 11 update (I believe it was the 2H24 update). After that Firefox (version 133, 64 bit) would only open with the message "Gah. Your tab just crashed". Nothing I tried has worked, not any of the remedies found in support pages. I somehow did a Firefox software update and it shows as a separate icon and has not migrated any of the passwords and bookmarks I had in the software version that keeps crashing (my default browser). Trying to get access to the encrypted passwords to the many sites I've got with Firefox I opened the browser in troubleshooting mode. In this mode I have access to all the passwords saved over time, and the browser seems to work fine.

Any suggestions on what I need to fix or if this is related to the Windows update? I'd like not to have to go through the two-step process to use the browser.

Thanks!

Some shades of white have a purple tinge to them. The amazon logo, certain themes, and other websites are slightly purple. This is only an issue in firefox, not any other program or browser.

My facebook account keeps getting double logins and ip4 logins rather than ip6 addresses. I think my ex-employer has installed a certificate into firefox on my laptop. I know absolutely nothing about certificates and have never knowingly installed one into my firefox web browser. But after looking I seem to have a certificate, is this certificate something that is allowing someone else access to what I view on my browser or allowing access to my cookies? Would users normally have their own firefox user certificate installed that they are unable to remove with a year on the date? I have added 2 screenshots. Hopefully someone can help Best regards David

Although listed as one of the options for default language, the current version of Firefox, which is my default browser, does not accept Brazilian Portuguese as the default language. It only accepts the Portuguese version, from Portugal which, to me, who speak Brazilian Portuguese, with all due respect, is a pain in the butt. I have tried, dozens of times, to delete the Portuguese version and set the Brazilian version as the default language. It works until I shut down the computer. The next time I turn on the computer, to my eternal dismay, Firefox cancels my previous language setting and reverts itself to the damn Portuguese version, which I dislike to the extreme.So I am, hereby, taking the issue to you with high hopes that this abdomally be straightened out once and forever. Many heartfelt thanks and wishing you sucess. Damião

Hello,

 An update or two (maybe more?) ago, the plus sign with which we add shortcuts to the Firefox browser home page/new tab page disappeared, so now we can no longer add shortcuts on the home page/new tab page.  Please help.  I am running Firefox Version 129.0.2 (64-bit) on a Windows 11 Pro 64-bit if that makes any difference.  Thanks.

Hello. The latest update of FireFox 129.0.2 still has intermittent crashes. Sometimes I can't access my Google searches or links in emails don't work, then it works, then it starts to malfunction again. I have to restart my PC. Could you release a patch that works as well as before FireFox 129.0? On the other hand, Canal+ works perfectly Thanks. Kind regards.

How to use FireFox as incognito without sending my identification tracking information? I have read a bunch of information about privacy with Mozilla and am quite confused.

I would like instructions that are simple to understand and implement.

I have heard that when some airlines know that you are looking for tickets ... the ticket prices are increased when you go to their website over time and time again.

Thank you

Over the past several days, Firefox has been randomly shutting down. When reopened, my previous tabs have disappeared. While setting up my laptop on a docking station today, I had to reboot several times. Every time it reopened my previously opened tabs are gone. Yes, I have Settings set to re-open Firefox with previously opened tabs. It has worked beautifully for me for years. Does anyone know what is going on? What I can do?

Somehow, my desktop started showing a beautiful scenic picture, that it changes several times per day. I can right click and get more information about the picture, but I find no way to turn this off. It not only is distracting, but often the lack of contrast make folders on my desktop hard to read.

After upgrading Firefox, i cannot connect to internet. My internet is working fine, but none of the websites can connect. I restarted Firefox twice. I restarted my laptop (windows11), can you help me? Email removed for privacy

Since the last Firefox update I can login in my outlook email-program, but after login the screen remains blank. In my banking account I can do transfers, but if I want to download a receipt (what earlier always was function properly) the screen remains blank.

I switched to using Firefox about six weeks ago, from Chrome. At first, it all worked perfectly. Now, I have a 100% reproducable problem: YouTube "short" videos never play. It will display the video player in the proper aspect ratio, and displays the overlayed text from the video's thumbnail and other meta data, but the actual playing of the video fails with a message typically like:

An error occurred. Please try again later. (Playback ID: C8SVj-KCLVM2m_DW)

Windows 11, current patched. on serious Core I9 system with 32 GB of ram, fast video card, etc.

Regular YouTube videos display perfectly. Using Google Chrome browser works perfectly.

The help message talks about clearing cache, but I can't seem to find that. I can see how to delete site-specific cookies and data. I really don't want to clear all cookies for all sites.

Hello there. Over the past few days iv had some problems while using twitch.tv . Im not able to use the chat because it says "failed to load module" .

At first i assumed this was twitch, so i tried chrome but its fine completely fine, there's no failed to load module error

I then deleted my cookies and cache but the error still persists. Its also fine when using the private/incognito mode.

Im on the latest version as well

I am using light visual mode. Whenever I am viewing a dark image, e.g. a relatively dark photo in a newspaper article, this darkens the entire page, including the menu/bar area. This happens as the dark image is scrolled to become visible. Normal bright views are restored once the dark image is out of view. And similarly my youtube music page, which has a black background, is horribly black now. I a musing windows11. Thanks.