Firefox Community Forum

I installed update 149 and since then, the VPN (NORDVPN) often will not start up and I have to restart the computer. If this cannot be fixed, I would like to go back to the previous version which gave me no trouble. thanks Brian

Bonjour Je suis "harcelé" par des notifications (cf fichier joint) qui m'annonce, un virus detecté, un cheval de Troie, une alerte système, une erreur critique... en m'indiquant toujours via d75ag1anaffc73bd3jj0.jhec-defender.pro J'ai beau cliquer, je n'obtiens rien sauf assez souvent une connexion à Avast (qui n'est pas installé sur ma machine !) et qui me détecte aussitôt de 3 à 5 virus... mais qui ne être supprimé que par une version payante d'Avast Réelle menace ou publicité agressive ? Comment se débarrasser de cela sans bloquer toutes les notifications de Windows Defender ? Cordialement

Google seems to be slowing down my PC. So I deleted google and installed Mozilla. I set Mozilla as my default browser but google is still there. How do I get rid of google?

I use Firefox as it is one of the last good browsers that isn't chromium based. However, I use it for work and like a nice clean PROFESSIONAL look.

With the introduction of version 149, I see new cartoonish fox icons pop up all over the place. After a little research it appears to be Kit, the firefox mascot.

Let me be clear, I don't hate the mascot, he's cute. But that is not what I want in a browser. I find his appearance and lack of ability to eliminate him infuriating.

I try to run a firefox in a as minimalistic state as possible. Intruducutions of this character, make the browser feel cartoony and childish. Things I despise in an application. I know many people like him, but I would like the option to not have him appear in the application at all.

I was able to successfully remove him from the certificate warning page setting the flag: security.certerrors.felt-privacy-v1 --> FALSE.

However, I can't find other places to remove this nuisance. Take a look at the attached screenshot. Things like this are not welcome without a way to disable it.

Do you have any documentation or instructions I can use to disable this childish nonsense and restore an adult browser again?

Cannot get FireFox browser on my Windows 11 computer to sync with my Android mobile phone or the other way around. They both can see each other but they won't sync.

Hello,

I’ve been having a performance problem with Firefox that only happens when I play the Letter Boxed web game from the New York Times.

When I open the puzzle in Firefox (latest version), the letters load fine, but as soon as I start typing, the browser becomes laggy input delays, slow animations, and occasionally the whole tab freezes for a few seconds. I’ve tried the following, but none have fixed it:

Restarting Firefox Disabling all add-ons Clearing cache and cookies Updating Firefox to the latest version Running in Safe Mode

Other websites and games work normally, and the issue only appears with this specific NYT game. It also doesn’t happen in other browsers on the same machine.

System Info: ‑ OS: Windows 10 ‑ Firefox Version: (latest stable) ‑ RAM: 16 GB ‑ CPU: Intel i5

Questions:

Is this a known issue with Firefox and the Letter Boxed game? Are there specific settings (hardware acceleration, graphics) that I should adjust? How can I troubleshoot what is causing the lag within Firefox?

Any help would be greatly appreciated thanks in advance!

I love Firefox and have used it forever. But its memory usage is killing me lately and I'm seriously reconsidering.... PC, Win11, Intel7, 16GB memory. (I'm typing this from Chrome)

I've updated, restarted, but it keeps maxing out and slowing my computer to a crawl. Somebody please tell me there's a fix pending?

for context: my laptop was working/running completely fine last night, as of about midnight (east coast). booted it up around noon today to see that it was super slow and kinda laggy (this is a windows problem, not a firefox one, don't try and fix that, i know it sucks), and that if i restarted/shut down, it would automatically update (not what i wanted). when i did finally begrudgingly restart my laptop, it auto-updated as windows does, and i expected to open up firefox and go on with my day.

unfortunately, it prompted me to make a new user. and when i signed into my firefox account, it treated the browser that i have used for at least 8 months like i had freshly downloaded it. all of my history on here is gone. all of my bookmarks are gone. when i connected my phone to try and sync from what i had left before i updated, all my sync information went down the drain and is completely gone as well. i really don't understand what went wrong here, and i'm honestly devastated that all of my work and my history has to be painstakingly rebuilt.

if anyone has any idea of what happened here, it'd make me feel a little better and try to avoid it in the future.

In Firefox version 149, there is an issue with print preview behavior for HTML <select> elements. When opening print preview, all <option> items inside a dropdown are displayed and included in the print output.

This behavior differs from Firefox 148, where only the selected option is rendered correctly during print preview.

Steps to reproduce:

- Create an HTML page with a <select> dropdown containing multiple <option> elements. - Select one of the options. - Open print preview (Ctrl + P).

Expected result: Only the selected option should be visible and printed.

Actual result: All options inside the <select> element are displayed and printed.

Impact: This issue breaks the layout of printed documents and makes forms difficult to read, especially when dropdowns contain many options.

bold textI don't know enough about settings/conflicts to resolve this. I had no problems for years, but this has been an issue for the past six months. AT&T has tried to help, but it just won't work. I have had this email address for almost 40 years, and I really don't want to give it up.

Hello, I'm French and I'm not very good at English I’ve been a Mozilla user for many years and am very satisfied with it. I’m having trouble interacting with the Ohm Energie website. I wanted to sign up for an electricity plan. The Ohm Energie page opened fine in my browser, but as soon as I tried to interact with it—for example, to request a quote—I received the following security notification: “Firefox has detected a potentially serious security issue with espace-client.ohm-energie.com. Someone impersonating the site might try to steal things like credit card information, passwords, or email addresses.” I was forced to use Chrome to sign up for my plan. I’m not the only Firefox user facing this issue. I called Ohm Energie and was told that many other customers have also encountered this problem. I’d like to be able to access my Ohm Energie account via Firefox—what can I do? I should mention that I’m not very experienced in resolving this type of issue. Thank you for your help

This has worked fine in the past, and works now in Chrome, but not Firefox. URL is https://outlook.cloud.microsoft/mail/?bO=1&msalAuthRedirect=true&sessionId=20fbbbb0-2fa6-4848-8fec-c20c6d3a8be4

Here's the error message

UTC Date: 2026-03-30T12:16:32.476Z Client Id: 05099EAAAC364C6EBD8115436A25F2D9 Session Id: 20fbbbb0-2fa6-4848-8fec-c20c6d3a8be4 Client Version: 20260320002.06 BootResult: fail Back Filled Errors: Unhandled Rejection: SyntaxError: JSON.parse: unexpected end of data at line 1 column 1 of the JSON data:undefined|undefined:undefined|undefined:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: y@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.06b8e674.js:2:299099 165332/E/<@https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.06b8e674.js:2:23542

st: 401 efe: BL0PR02CA0036

La version initiale présentait une page d'accueil personnelle.

La nouvelle (depuis quelque temps) chamboule tout.

Comment faire pour la retrouver et la figer ?

Merci.

On entering a search into the search box on firefox home screen with google selected the resulting display is just computer code (looks like this: (�/�Xx<�l�/�F$�O�6
g�W��wd) selecting a different search engine or going to google.com works just fine. How do I fix this?