Firefox Community Forum

So Im currently trying to watch young sheldon on netflix, and im doing it through firefox, and it wont work, it says error code f7701-1003, thank you for your time.

I joined a Microsoft Teams meeting through Firefox on the web on a Linux machine. When I tried to share my entire screen, I was asked if I wanted to share the entire screen in a Firefox pop up which I said yes. Then the "you are sharing your entire screen" came up, the sharing icon was red and the "stop sharing" button was red. See attached image. This all disappeared and reverted to the default state almost instantly.

Teams has a feature to "manage what attendees see manage what attendees see" where the meeting host can preview shared content before making it live.

I am concerned that the meeting owner was able to see my entire shared screen without me even knowing it through this preview.

Can someone help? Microsoft just sends you around in circles and I can't contact Mozilla.

Dear Community,

the userChrome.css I used to use to disable the search bar expansion on focus no longer works (http://userchrome.wesleybranton.com/megabar). I disabled all urlbar.search options in about:config. But Firefox still gives me suggestions when I start typing about (as in about:config).

toolkit.legacyUserProfileCustomizations.stylesheets is set to true. The userChrome.css is inside the chrome folder inside the profile directory. I'm on 140.3.1esr (64-bit).

How do I disable this for good?

Thanks in advance!

When Firefox ver. 143.0.4 (64bit) is opened, I see many tiny groups of black dots withing the whole of the desktop display of this Firefox. From these black dots I see coloured lines traveling across the desktop within the Firefox desktop display. As I move the mouse these coloured lined move, disappear, and move around. Can you offer any suggestions. I am using Ubuntu UALinux Gamepack 22.04, The version of Firefox is an upgrade provided by Firefox updates. I have tried to uninstall this version of Firefox, same effect occuring. I have manually deleted every referance to Firefox, as this worked in UALinux Gamepack 20.04. I have used sudo apt update, sudo apt upgrade, sudo apt --fix-broken install, and sudo dpkg --configure -a. None of these can fix this problem. I restarted my Firefox today with the same problem, and found in the Help dropdown menu, and found troubleshoot mode. When I opened in troubleshoot mode, all these problems are not there any more.

Can you offer any help ??????

P.S. I tryed to take a screenshot of this problem, but the screenshot doesn't show this problem ?

I am now receiving this notice for more and more commonly accessed websites. I get the message if I have https only selected or not selected. Currently receiving for Lowes, Home Depot, American Airlines and more. I can go to a Firefox 135.0.1 browser on a separate desktop accessing the internet through the same router and do not have issues. I suspect I have been upgraded by Mozilla into a less functional browser version for whatever reason that Mozilla does this.

Sample Messages:

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

Reference #18.ea382f17.1754673395.2abc2b02

https://errors.edgesuite.net/18.ea382f17.1754673395.2abc2b02

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

Reference #18.89f8cd17.1754677280.265017bc

https://errors.edgesuite.net/18.89f8cd17.1754677280.265017bc

I am using version 88.0 and browser, both outdated and not supported. How do I update to current version and update browser? I am 80 yrs old and not computer literate, please keep it simple. Also, I am alone, not help available. Thank you

I am using version 143 for Linux and it is suppose to have improved fingerprinting protection. But when I go to https://coveryourtracks.eff.org i still see a result that says "your browser has a unique fingerprint"

Is there a parameter I should be enabling ?

Running Linux-Mint on my laptop. Trying to run an epson ET-2400 ink jet Printer. Need Driver for printer. I have seen some information about software that needs to be added to "talk" to the printer but I cannot find it now. Please someone help.

I have Privacy & Security set to Strict with Cookies and Site Data deleted when the browser is closed with only 3 sites in the exclusion tab. I also use a VPN to assist with masking and for connections to defined systems and as part of that I will randomly set it to different countries 'because I can'.

I was looking at the website for the current Rugby World Cup (https://www.rugbyworldcup.com) but it was showing the wrong times for the matches. A little digging showed it had remembered my location from some point last week when the VPN was active and set to Iceland.

There is nothing I can find in my browser settings to permit this and I would appreciate pointers to check further since one of the reasons I have set the higher level of restrictions in my browser is to stop this kind of activity from websites.

I have not found where I can stop autotraslation, not just for "this side". I'm really confused when you start read in swedish, and than after a while I comming accross fucking stupid trasnslations, and have to go back and off translate.

Hello Facebook Team,

My account was disabled on September 25, 2025. I believe this action may have been a mistake because I have always tried to follow Facebook’s Community Standards.

This account is very important to me as I have been using it since 2014 to connect with my friends, family, and community.

I kindly request that you review my account again. I am happy to provide any identification documents needed to verify my identity.

Thank you for your time and support.

Sincerely, (Soe Kyaw Thu Soe)

I was trying to go to ssa.gov, today, and hit the button to login. When I did that, I got a 400 page saying: Bad Request

Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

I have done this before, and it worked. To test if it was a problem with the web page or the browser, I did it from another browser (Brave), and it loaded fine. Is Firefox sending a bad request? Is this something you can fix.

I am using Mozilla Firefox for Linux Mint 137.0.1 (64 bit).

Hi, I'm using Firefox 142 on Ubuntu 24.04. It's a fresh install. I cannot sign in icloud.com with Firefox even though it works with other browsers like Brave. I deleted all cookies and site data and disabled extensions (KeePassXC). It doesn't help. I tried in new private window. No success. I copy my password from a password manager, so, no, I haven't mistyped it.

Here's what I do:

1. Open Firefox and go to icloud.com
2. Click on the "Sign In" button
3. Enter my Apple-ID and click on the arrow on the right end of the "Email or Phone Number" field

At this point Brave behaves differently than Firefox. See below for how Brave behaves.

Firefox: -> A "Password" field appears (no buttons "Continue with Password" and "Sign in with Passkey")

1. Enter my password and click on the arrow on the right end of the "Password" field

-> Error message "Failed to verify your identity. Try again" appears. See icloud.png

Brave: -> Two buttons "Continue with Password" and "Sign in with Passkey" appear. See icloud-with-brave.png

1. Click on button "Continue with Password"

-> A "Password" field appears.

1. Enter my password and click on the arrow on the right end of the "Password" field

-> 2FA code is sent to my iPhone -> "Two-Factor Authentication" form opens... etc. complete sign in successfully

Please help!

Unfortunately I cannot attach the HAR file from the login sequence because the password is included. However, I attached some screenshots from the Web Developer Tools. It seems to me that the login flow with Firefox is broken. I can't tell who's to blame, Apple of Firefox. The error message with Firefox is always the same, no matter whether I enter the correct password or rubbish. In Brave, however, there is a more precise error message when I enter a bad password. See icloud-with-brave-wrong-password.png

I've followed all the steps for updating Firefox on Linux, but every extension prompts me to update when I go to add them. How do I know when Firefox is really updated? I access Firefox through Linux on a Chromebook, in case that helps.