Firefox Community Forum

Since latest upgrade (1/16/2026) I cannot log in to Outlook email. This is specific to Firefox 147.0.1 (Chrome and Pop Peeper logins to Outlook work fine). I tried clearing cache, updating, restarting, rebooting, trouble-shooting mode, private window etc. to no avail. I get 400 error from Outlook.

When I try to change the wallpaper in WhatsApp, Firefox freezes completely. I have Windows 11 Home 25H2 on a Dell Ultra 9 PC with 64GB RAM.

I've taken these measures without success:

1. Logged out of WhatsApp.
2. Deleted cookies & browser cache.
3. Logged into WhatsApp.
4. Tried Troubleshoot mode.

This issue doesn't happen in Chrome or Edge. WhatsApp Support had no further advice to give.

Kind regards Gummo

I have discovered Major problem with Firefox which affects the use of my btinternet.com email account . Since the recent update I am no longer able to add the contact name to a new email which I wish to compose automatically from my contacts (I am required to type it in full. I can still do it, with the shortcut of typing in the first 3 letters, when using other browsers such as Google or Edge or the Outlook muti mail account service but generally prefer Firefox. If this situation prevails I will ditch Firefox as speed of communication and addressing is of the essence to me. Are Firefox aware and are they correcting things?

Could any settings have been altered by the update - which contribute to my problem?

I have a very repeatable issue, that others have been dealing with as well, where Firefox will frequently disconnect Twitch chat after a period of time and go through a loop of disconnecting/reconnecting.

This is ONLY on Firefox, I can run Chrome or other browsers simultaneously with Firefox and Firefox will disconnect when others do not.

I am not sure what is occurring, but I know it only happens after a while. Like maybe after 30+ minutes of watching a stream, the chat will start skipping other users inputs, just show my own, then give me a Welcome to the chat connection and other messages will start appearing again. Once it hits this hang-up period, it starts disconnecting frequently.

I cannot find any resolution and there are no resources or articles about this, but I made a post on reddit and multiple users reported the same thing.

Hi, Recently and despite upating to the latest Firefox Browser, when I try to use BT Email groups it offers it as I type and I select. It then just shows the first character of the group or email surrounded by a red box and a x next to it and doesn't expand into the members of the group. This automatically suplied email recipient address is invalid. I've tried clearing the cache for the webpage to no avail. The problem doesn't occur in the Chrome browser. Kind regards Michael

418 Hello, I like your site (and I donate a little from time to time), but some of Firefox's behavior is becoming annoying: for months now, Le Monde articles have been cut off on the right (not those from Le Figaro), and recently Instagram has been blocking the browser after a few posts. Of course, it might be "their fault," but it's clear that it doesn't happen like that with Chrome. Good luck!

When I try to make a Google search I get the following message, "I'm not a robot" with a reCAPTCHA: "Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests, and not a robot. Why did this happen?". This happens on Firefox, but not Chrome or Edge. If I 'Allow' Google in the 'Exceptions - Cookies and Site Data' then I do not get the message, but it takes several seconds for Google display the resulting page. However, if I delete the cookies/cache the message will return and I have to redo the reCAPTCHA. I have scanned with Malwarebytes, Bitdefender, Hitman Pro, Trend Micro House Call and Microsoft Defender, nothing detected. Running Win 10 (64) with 'Extended Security Updates', Firefox 147.0 (64), no additional Extensions or Plugins. Also I uninstalled and reinstalled Firefox.

Hello,

The fonts are not rendering properly on few websites, example(apnetv.xyz), everything was working fine with stable release of v146.

The beta versions were having the same issue, i assumed it was related to Beta releases, so I switched back to stable one. However now firefox has released stable v147, the issue persists. Kindly fix it.

Regards, 4hm3d

I'm trying to fill out a magazine subscription form that uses reCAPTCHA but the reCAPTCHA does not show in the form using Firefox but does in Chrome. I've seen similar issues and tried to solve it by clearing the catch and disabling extensions but nothing helps.

When I go to (seemingly) any Elsevier site, the browser tab immediately closes with no error or explanation. An example is this site:

https://www.sciencedirect.com/science/article/pii/0167508784900164

My firefox will not connect properly with the Bing Home page. It often provides a message "cannot connect" and when I click on that, it does. But yesterday, when I did that, all that came up was a screen with just a solid colour and the search bar on it. I used my Safari browser to access Bing, but I don't like using Safari. So, would like a fiz...

I have set Bing as my home page when I start Firefox (it has been this way for years). This morning when I started Firefox the Bing home page only partially loaded. The home screen picture of the day won't load and I can't search with it. The only thing that works is the other bookmark tab. I also have Bing in those tabs but the same thing happens when I try to start it from there. I have shut down and restarted my computer, still happens. I have downloaded the latest update of Firefox, still happens. I don't think doing anything with Bing will help, since when I try to start it from the saved bookmarks tab or type it into the address bar it still won't load. I also started Microsoft Edge and it loads fine from there. Although, I just started Chrome and the same thing happens there, it only half loads, so not sure what is going on. I am not tech savy, so am a little uncomfortable with deleting Firefox and re installing it myself. Not sure if I would loose all my saved bookmarks. Can you help.

Brock Thoman

I have at least one question on the support forum which has never been answered. So I went to Bugzilla, and discovered dozens of YouTube issues under the Open/Unconfirmed status.

I can reproduce my problems. I'm sure others can reproduce their problems. Nothing is done. NOT EVEN admitting there is a problem.

If I can't use YouTube on Firefox (I can't), then why am I using FF? It is one of the biggest sites on all of the internet. But FF apparently doesn't care if it doesn't work.

What. Is. Going. On?

(See the attached image... the big blank space is where the video should display)

When trying to access Facebook via the Firefox browser, the browser screen immediately grays-out and freezes? It is the only web site doing this, and it doesn't happen with other browsers. I have attempted to contact Mozilla technical support and their only response is to refer me to a forum, instead of providing actual technical support. I have reinstalled Firefox, I have created a new profile, I have cleared my browser history, emptied the cache, etc., yet this problem persists. How do I get actual, real Mozilla technical support from Mozilla for help with this issue, instead of being referred to a forum, or do I just not use your product due to lack of actual customer support? How do I contact an actual person at the Mozilla corporate offices about lack of real Mozilla customer support?

Firefox browser when on Foxnews will crash and causes PC to completely reboot? This has been happening on multiple PC's in my house and has been happening for months.

I've been using Firefox since forever but over the last couple of months, the auto translate subtitles (to English) hasn't been working when watching Youtube videos. There's a thread on the Youtube support site with nearly 40,000 posts of people with the same issue and tonight I was trying to watch a video where the hosts talk in Italian, so I use auto translate to English subtitles but no subtitles appear. It will show Italian language subtitles.

I've gone back through this Youtube channel's history trying videos I've previously watched from months/years ago when auto translate used to work but even they're not working now.

I decided to try the video in Edge browser and to my surprise the auto translate to English worked there. They also work in Chrome.

So what could be causing this issue on Firefox, which started about August time?

This is quite bizarre as I assumed all the processing/translation was done by Google/Youtube so in what way can Firefox be part of this issue?

To be clear, subtitles in the (foreign) language the people are speaking, works. Subtitles translated from that language to English (or other languages) has stopped working. Subtitles translated from that language to English IS working on Edge and Chrome browser.