Diễn đàn hỗ trợ Firefox

I am using Firefox on Windows 11, in the process of switching from Chrome.

I run Cockpit (https://cockpit-project.org/) on web servers that I manage, and when I log into it on Firefox the screen flickers constantly, making it unusable.

There is no issue with any other web sites I have visited, and I can still use Cockpit when in Chrome. So ay suggestions on how to troubleshoot and resolve the issue with Cockpit and Firefox?

When I try to log into Tangerine bank I get the error. "We're sorry for the inconvenience. This function is currently unavailable. Please try again later."

This issue started Oct-13-2025 and it appears to work when using Firefox ESR 146.01 but not the regular Firefox 146.01 versions. Tangerine is not giving me information on the error and I was wondering if there is a difference between the ESR and regular version that might clear up this issue?

I am using 140 ESR version on linux with Cloudflare's DNS over HTTPS and with DOH active for some reason resolving a domain like d3oklwo3y1bx83.cloudfront.net will resolve to local host IP 127.0.0.1.

I am using firefox about:networking#dnslookuptool to test resolution of the domain d3oklwo3y1bx83.cloudfront.net Both with DOH on and off the resolution remains local host. I tried another browser on the same workstation and I was able to receive a resolution of 13.225.193.203 13.225.193.133 13.225.193.64 13.225.193.58 Why is firefox ESR not able to resolve that domain? What are causes ?

Is is firefox dnslookuptool results.

Normally, when zoom in on a web page in Firefox, the page will adjust so the page content is still visible, by insisting the magnified content is still visible, or a vertical scroll bar is created to reveal the content.

I also run into pages where the content is only visible when the page is 100% or less.

Can this be adjusted?

Добрый день. Проблема наблюдается примерно около полугода. В браузере открыто несколько вкладок, не закрываются (новости, ВК, поиск, различные статьи и тд.). Происходит следующее: читаю активную вкладку, строго через определенное время, без каких-либо действий с моей стороны, активная вкладка меняется, т.е. открыты вкладки 1-5, активная 2, через 10 мин (до переустановки мозиллы всегда одно время) активной становится 4, к примеру. Раньше фокус перемещался на вкладку поиска Yandex, если закрыть вкладку с Яндексом проблема уходила! Я удалил браузер Yandex и все что было от него (автозагрузку, планировщик заданий), переустановил Firefox. Какое-то время все работает, но потом начинается снова, тут время переключения меняется. В последний раз (после удаления Яндекса) фокус стал переключаться на mail.ru, значит яндекс тут не при чем. Если закрыть Mail проблемы нет, если открыть страницу снова, то примерно через 1 мин. открывается mail.ru. Доп. информация Windows 11, плагинов и расширений в мозилле нет, пробовал работать в безопасном режиме браузера - не помогает, перезагрузка не помогает, помогает только закрытие "маркированных" страниц, проверял на вирусы NOD32, cureIT в безопасном режиме работы ОС, вирусов нет. Очень прошу помочь с решением!

I am unable to recover the original profile files, and this is not me trying to recover that; they are just gone completely so, I can't bring that original profile back to fix this. I have refreshed, uninstalled, signed out, closed the tabs from my sync list, etc, but I can't get this to go away. I don't know what to do.

I’m currently facing a very frustrating issue with Firefox. I have been using Firefox for many years, and it is my favorite and most comfortable web browser for my day-to-day work. I rely on it heavily as all my bookmarks and other important details are saved there.

However, over the past few weeks, Firefox has been crashing more than 10 times a day. I have already tried all the troubleshooting steps available in the forums and through AI support, but none of them have resolved the issue. I also tried installing and using the Firefox Beta version, but the problem still persists.

In our environment, other users and devices are not experiencing this issue, so it does not appear to be related to internal firewall or antivirus restrictions.

Could you please help me troubleshoot this issue? I am attaching the error screen that appears after the crash along with the crash report for you

Hi there,

I'm having a strange issue with a website I use for crypto trading. On Firefox the page layout looks broken and some sections overlap or don't load correctly.

The site is paribu.com https://www.paribu.com . When I open the same page in Chrome everything looks normal and the layout loads properly.

I tried refreshing and disabling a few extensions but the issue still happens in Firefox. Has anyone experienced something similar or knows what might cause this?

Thanks.

All of the sudden can't use Hotmail through Firefox I have tried clearing cache, making sure clocks are correct etc.

This is the error page that I get. How can I fix?

UTC Date: 2026-03-03T14:58:14.746Z Client Id: C04E3F29FD7245519575F2719944C1F7 Session Id: e5d1dce8-796f-466c-a0b0-e06785904ba1 Client Version: 20260220002.06 BootResult: fail Back Filled Errors: None err: TypeError: TrustedTypePolicyFactory.createPolicy: Tried to create a second default policy esrc: Script et: ClientError estack: 734392@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.7ffe5f65.js:39:147215 I@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mail.runtime.1902e968.js:1:145 282916@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.7ffe5f65.js:21:21492 I@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mail.runtime.1902e968.js:1:145 691114@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.7ffe5f65.js:39:61327 I@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mail.runtime.1902e968.js:1:145 835041@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.7ffe5f65.js:42:50184 I@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mail.runtime.1902e968.js:1:145 950733@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.AppBoot.m.7ffe5f65.js:42:220063 I@https://res.public.onecdn.static.microsof

I'm away at another location for a few months out of the year. The computer in the other location is almost identical to this one, done in a very simple manner, by using a backup and then reinstalling everything from previous computer to current, most of which is data.

The Firefox profile is copied over and then the version of the program from that other computer is copied, so the profile and program match. The last step is to disable each add-on individually, then to immediately enable them again. (Otherwise, the browser won't connect to the internet.)

I followed the same procedure today as every single time. But then I noticed the blank new tab add-on isn't working. And upon looking at the add-ons...none of the enabled ones are listed (or working). Only the disabled and recommended ones. I don't even know which were installed, and would have a hell of a time figuring out which ones are supposed to be there, and how they're set up.

Where did they go, and how can they be reinstated?

This has never happened before, and I've been doing this same thing for at least 3 years.

Thanks in advance.

Hello everyone,

I keep having the issue that on some websites, a whole list of cross-site cookies is displayed when i click the icon to the left of the address bar. "These parties can use cross-site cookies and site data while you are on this site."

Especially Google (I am not logged into a Google account) lists many different sites here. I can then click on "Allowed X" - but after a few days, the entry appears again without me being asked!

Under "Privacy & Security" I am using the Standard level. It says there: "Firefox blocks the following: (...) Cross-site cookies in all windows (...)" So why are some still being allowed? How can I generally prohibit them except for those I manually allow? The five levels for cookie handling under "Custom" are unfortunately not very self-explanatory, and I can’t find any whitelist option there either.

Thanks for any advice! Best regards, Martin

I am looking to Restore yesterday Firefox have lost all my pin tabs when I opened this morning the browser how can I get my old stuff back? Please help me out. Thanks