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The title. I want to be able to browse while trusting a specific CA certificate, but have the option to browse without it as well. If there is no way to do it, is there a way to toggle whether Firefox trusts a CA without needing to reinstall it every time?

Why is the address bar now a search? This is annoying. How can I change this? I have already change about:config settings to false and nothing changes.

Thank you Rafal

I've recently set up Thunderbird on Linux Mint 22.2 and was unable to sign into Yahoo so I tried to sign in with Firefox instead and had the same errors :-

   Something went wrong
   We could not sign you in. Try again from a different device.

OR

   We couldn’t sign you in
   Change your browser settings to continue. Try the following:
   Turn off ad blockers
   Enable JavaScript

If you still can’t sign in, try a different device.

I can sign in with Chrome without any problems on the same workstation. Firefox version :- 147.0.4 (64-bit)

   Only Extension is Privacy Badger, but this is disabled for Yahoo.com

Thunderbird version :- 148.0 (64-bit)

   No extensions - as installed from Thunderbird download site

I'm not having any issues signing into any other websites / email accounts (Google, Hotmail).

I notice on the support website :- https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo it says "Starting with version 148, Thunderbird is switching to a more secure authorization protocol PKCE for Yahoo" BUT this isn't offered in the list of Authentication methods, has PKCE been delayed? Currently using OAuth2 for Thunderbird

This has started a few days ago. I'm running Firefox Desktop on Windows 11. Browsing is perfectly normal, until I try to watch a video in full screen mode. It plays normally for a few seconds and then my whole system freezes, with no response to any action except for hard reset. This has never happened to me before, and all other browsers I try do not demonstrate the same problem. Is there any solution other than changing browser permanently?

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 have upgraded my PC from Windows 10 to Windows 11 and my Firefox bookmarks have disappeared. I understand that Firefox keeps a copy of my bookmarks which appear each time I start Firefox, so how can I make them appear again automatically when I open Firefox?

TB on Windows

Prior to TB 148, OAUTH worked for POP3 access to: Gmail, MS Outlook, and Yahoo.

After TB 148 upgrade: OAUTH to Yahoo fails, subsequent log-in page also fails. Both OAUTH to Gmail and OAUTH to MS Outlook still work fine.

Rolled-back/Reverted to TB 147.0.2 -- OAUTH to all works fine, as it did previously.

Note: YahooMail seems to have other problems. But I was able to confirm successful OAUTH and POP3 to YahooMail after reversion to 147.0.2.

Recently, whenever I put a video in PiP, the whole browser freezes. I'm not sure what causes it. The PiP player itself is playing and working fine, it's the browser as a whole that freezes completely. I can play/pause and even pop it back to its tab, but when I do, the browser is inaccessible to me because it freezes, despite the video still playing normally. I can only terminate the browser with Task Manager, otherwise the video will continue playing and the Firefox process goes on the background.

I have tried Googling for a way to fix it, but nothing seems to work. Some of the recommendations were to turn Hardware Acceleration off, allow autoplay, upgrade GPU drivers, and test in Troubleshoot Mode. I have autoplay completely off (including in about:config) and gave an exception to YouTube. I don't think this is the problem though, because I've had it set up this way for a long time, and the browser freezing only started happening recently. I have had Hardware Acceleration off for a while too, so it's not because of that. My GPU drivers are up-to-date (Nvidia). The browser still freezes in Troubleshoot Mode.

The problem is not limited to YouTube. Wherever I can pop the player off with PiP, it will freeze the whole browser (like Twitch or any other site with video player capabilities). I tried playing a video in a different browser and it worked just fine with no freezing, it only happens in Firefox.

I noticed that the common issue people report is the PiP player itself freezing, but my case is the exact opposite. The PiP plays fine while the rest of the browser freezes. I really like this feature and don't want to turn it off if possible. I like to pop the video out and watch it play while I scroll around on my desktop.

Emails are not downloaded. for instance system says downloading 38 emails, but none come through. Constant duplication of emails that have downloaded and delete doesn't work. Info box comes up asking if there's sufficient room in memory as it won't write the emails to my mailbox. emails work fine on another system - BTmail.

Can get(POP3), but can not send emails to a newly created personal outlook.com account.

the following error occurs when trying to send mail: Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)

all my setting are correct per thunderbird and microsoft:

  (smtp-mail.outlook.com, port 587,  STARTTLS, OAUTH2, xxxxx@outlook.com)

thunderbird error log file contains the following: . . . mailnews.smtp: S: 535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]

SmtpClient.sys.mjs:452:17 mailnews.smtp: Command failed: 535 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]; currentAction=_actionAUTH_XOAUTH2 SmtpClient.sys.mjs:578:19 mailnews.smtp: Error during AUTH XOAUTH2, sending empty response . . .

Based on my understanding its seems thunderbird is using SMTP AUTH instead of OAUTH2 as required for newer personal outlook.com accounts. Is my assessment correct? If so, is there a fix?

I have current TBird in use but it is configured for use only on present PC (employer restriction). Is it possible to set Tbird to automatically forward all incoming emails to its inbox to a new account on gmail (not yet created, for temporary use on a laptop while I am in other countries) ? Really value all advice you can give me. I'm not a computer wizard!

Initial performance is good, but over time especially when tabs are opened and closed frequently responsiveness to user input (e.g. tab switching, opening/closing tabs, response to hyperlinks) becomes very slow. After force quitting and restarting, performance is good again for some time. I exclusively use private tabs.

I thought I was deleting one shortcut and when I toggled the button on the shortcuts page, they all disappeared. How do I get the short cuts back? And, how donI remove shortcuts I do not want?

I'm blocked by cbl.mailcore.net, so I can't receive my mail. I've contacted spamhause but I still can't get the thing to work. So have you any idea, what I'm gonna do ? Sincerely Keld Friis

Access Denied You don't have permission to access "http://www.godaddy.com/" on this server.

Reference #18.acf7d517.1771548295.4f66cee0

https://errors.edgesuite.net/18.acf7d517.1771548295.4f66cee0 is what I get when going to https:\goddady.com as of today. Running on Windows7 (no, I won't upgrade). Tried a variety of changes. But Chrome works fine. Any suggestions?

I have found that Grok is more likely to provide a balanced answer than chatGPT, which usually swings to the left, and has a tendency to just make stuff up. I haven't really tried the rest on your list, I haven't even heard of some of them, for that matter. I don't understand why you couldn't include it, when you included all the rest. While I'm at it, why did you remove the upvote/down-vote in the new tab suggested sites? I was down-voting all of the far-left progressive garbage, out of tens of thousands of pages you never showed a single right-wing suggestion from sites like Fox, New York Post, etc., or even the center, like The Hill, but once I got rid all of the garbage from Huffington, Salon, Vox, Guardian, CNN, there were some good articles by sites like AP, Smithsonian, Scientific American, etc. that showed up and were center or center-left news, not propaganda. I'm giving up on the tab suggestions for now, I'll check it again sometime to see if you are still ignoring the 32% of the population who are right-wing Republican, and the about 38% of the population who are independent/center, to continue to concentrate on the 30% who are left-wing Democrats, and more particularly the tiny percentage who are Progressives among the Democrats. Instead of increasingly becoming the browser of choice for just one part of the population, it might be a good idea to think about representing the other 70% of the population as well.