Firefox Community Forum

Team, I am a longtime user and supporter of FF. I can't tell you how much I love the the layout of Firefox on Windows in v. 133 with the vertical tabs. Just as important is the fantastic, new font rendering. Thank you so much. I used to make multiple adjustments to the font in about:config when I installed FF on Windows. Now, the fonts look fantastic out of the box. Great job, team!

Bill Fischer

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

I looked at the system requirements page at https://www.mozilla.org/en-US/firefox/141.0/system-requirements/ . For Windows devices, the operating systems supported are listed as "Windows 10 or later".

In October 2025, Microsoft officially stops providing feature and security updates for Windows 10. However, they offer consumers and businesses the option of enrolling in 1-year, 2-year, and 3-year subscriptions for Windows 10 devices which will provide another 1-year, 2-years, and 3-years of additional security updates. You can read more about this at https://learn.microsoft.com/en-us/windows/whats-new/extended-security-updates

For those individuals and businesses who will be enrolling devices into the Windows 10 ESU program, will Mozilla continue to support Firefox on Windows 10 after October 2025, at least for those receiving security updates through Microsoft subscriptions? Or at that point will Mozilla consider Windows 11 to be the only supported Windows operating system?

Thank you!

After a windows update I get the following message when I try to open Firefox: The procedure entry point ?ToLogLevel@mozilla@@VA?AW4LogLevel@1@H@Z could not be located in the dynamic link library C:ProgramFiles\Mozilla Firefox\xul.dll Then I get Couldn't load XPCOM

I tried uninstalling firefox but it just hung. I restored it to before the windows update but still got the same message

can someone please tell me why firefox is trying to install this unwanted file.....i run bitedefender everyday and everyday this pops up it is ANNOYING Online Threat Prevention

firefox.exe attempted to establish a connection relying on an expired certificate to sync.contextualadv.com. We blocked the connection to keep your data safe since websites must renew their certificates with a certification authority to stay current, and outdated security certificates represent a risk. Add to exceptions

please email [edited email from public community support forum] ......

After updating Mozilla Firefox to the latest version, it changed the default language from English (US) to German (DE) although English (US) is currently selected as the default language. It will not change back to English (US)

When l look at Settings>Updates>Check for updates: I am usually presented with an update such as the one just now: Security Intelligence Update for Microsoft Defender Antivirus - k32267602 (version 1.443.4.0) current channel (broad) completed00 -

After checking for updates I will then go to SETTINGS> IT clearly shows that I am running Windows 11 PRO.

CAN SOMEONE PLEASE TELL ME WHY IN PLACES THAT ARE TRACKING ME AND TAKING MY PERSONAL INFORMATI0N, THAT IT SH0WS OR SAYS THAT I am running Windows 10? I often see it if I sign into one of the many different accounts that require 2 factor authentication, which will send me a notification alerting me that someone has signed into my account from a NEW DEVICE. OR FROM AN UNKNOWN DEVICE. That is when they ask if I recognize this login and it shows device and location from which the login attempt is happening. IF I answered honestly, (because it is showing a login attempt happening from a (WINDOWS 10 SYSTEM) and my system shows Me that it is running Windows 11 PR0: it would flag as suspicious and my account would get locked up for sure. Instead, because of the odd hour of the night it occurs, that combined with the location I know it is myself and even though it says "ON A SYSTEM RUNNING WIND0WS 10", I force myself to lie and answer that I do recognize the attempt. PLEASE SOMEONE HELP FIND A SOLUTI0N TO THIS ERROR. THANK YOU IN ADVANCE

Hello. Why doesn't Fiery Fox release a portable version of the browser? What if everything was in one folder and didn’t shit throughout the entire system?

We kindly ask you to start releasing a portable version.

Thanks for your understanding.

Best wishes.

A problem with an x.0 version? I've been using FF from "source code" for years on Debian Linux, but this is the first time such an update is failing after the most recent update to v133.0, as illustrated in attached image. How can I now update to the fix for this problem, please?

Have an old computer and running Ubuntu

Want to keep Firefox but old man and don’t understand certain aspects

Could somebody email me a link that help? Is there such an animal?

Email to

I'm trying to install Mozilla VPN but it won't install. The error message is as follows: the installer encountered an error that caused the installation to fail.

Hello,

I've tried running "firefox -P". I've also tried deleting ~/.mozilla. No matter what I do, I still keep getting this message.

OS: Linux 6.10.13-3-MANJARO Firefox versions: firefox 131.0.3-1 installed from the Arch repo via pacman; also firefox-132.0.2 installed from tarball downloaded from firefox.com and unpacked as /opt/firefox.

With firefox 131.0.3-1, I get the following error message:

[Parent 33389, IPC I/O Parent] WARNING: process 33445 exited on signal 9: file /usr/src/debug/firefox/firefox-131.0.3/ipc/chromium/src/base/process_util_posix.cc:335

With firefox-132.0.2, no messages are printed.

What is even more confounding: I have 2 user accounts on this computer. When I login as myself, I get this popup. When I login as the other user, firefox opens up fine.

I've already looked at the following, but that has not helped. https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible https://support.mozilla.org/en-US/questions/1327628 https://support.mozilla.org/en-US/questions/1396772 https://support.mozilla.org/en-US/questions/1454745

I'd be most grateful if someone could please suggest any other alternatives to try. Thanks!

i was using firefox with multiple tabs for most of today, had to shut pc down to run errands. When i restarted pc, firefox would not start, i have it pinned on my task bar/start menu/whatever. I opened my system moniter to see what was going on when i tried to start firefox and the processes do not show up in the process list. I tried a reinstall with the ubuntu software store and no noticeable change in behavior. Not sure how to get into the profile section, the option for it with a right click on the firefox icon does nothing seemingly. Under normal operations i have seen two firefox processes listed.

I have windows 10 at moment, but I know I will have to update to winows 11 soon, but I am worried n case I cannot get my Mozilla back again,.

Do I start all over again, or when I update will my laptop still recognise my Mozilla account.

To be honest, I cannot remember my Mozilla password...eeek !! thanfully, my Mozilla did.

I only want Mozilla, I do not use anythng else.

Thank you for you help.

Barbara from the U.K. x

idk when exactly this nonsense happen or with which update but thats outrageous.

why the hell it canceled in my setting the check mark at startup for opening previous tabs?! i haven't touched the settings in ages since i set them up so it had to be one of your stupid updates.

fortunatly chatgpt had a solution to bring all my tabs back otherwise i'd fucking rage out.

i'v been using firefox for ages but after this i was really thinking i should switch to something else.

After last update Firefox ESR 115.23.0 the menu on the website: https://connect.garmin.com/modern/homeis not displayed correctly. Could you fix this? Second question - can you disable reCAPTCHA when logging in to this site?