Diễn đàn hỗ trợ Firefox

Is there a fix or workaround?

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Mozilla, in their infinite wisdom, sent me a note about something new in firefox, by displaying it in a new instance of Firefox.

It wasn’t until I closed my normal session, that I realised a new instance of firefox was also running, and shut it down on.

In shutting the new instance down after my usual session, it overwrote all my normal tab settings🤬

Q1. Are my normal tab settings recoverable? Q2. Why did Mozilla think it a good idea to open a new instance of Firefox to send me information, rather than simply open a new tab.

NB This is in Windows 11

I have over 100 open tabs spread over 4 Mac desktops. I can no longer access ANY of them after upgrading to macOS Tahoe 26 and installing ESET Cyber Security Pro. I've used ESET with Firefox for many years without ANY problems. But now I have to choose between uninstalling ESET and being unprotected in order to use Firefox AT ALL. Every single webpage is blacked out with the message below. ESET support says that Firefox needs to issue an update to fix this problem.

every download gets stopped with "This file contains a virus or malware", have to click on the file, then click "allow download" every time!

I check the file with my antivirus and it finds NOTHING!

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 am so tired of the stupid banner popping up every time I put something into full screen, that says "press escape to exit full screen".

Is there a way to disable that?

I am on a windows 10 PC.

I have Firefox installed on three Windows Desktop Computers. On one, I just cannot delete Bookmarks, no matter what suggestions I try. Verify Integrity of the database produced no results. I do not, for a variety of reasons, sync bookmarks (or anything else) between the three installations. Experienced user that has spent far too long on what should be a simple issue.

Hi,

The Linked in pages are not appearing properly.

I have attached the images of the following two pages,

https://www.linkedin.com/feed/

https://www.linkedin.com/mynetwork/grow/

Please arrange to do the needful.

Regards Deepak

I have Verizon FIOS and have been able to receive cable channels on my laptop until recently. Now I cannot access them without a sign-in which leads to some sort of error that I don't understand. Any help?

Yahoo Finance stock charts are not loading. Never encountered this problem before this week. A GeekSquad tech support person was not able to fix the problem and recommended I contact Firefox. Edge and Chrome load Yahoo Finance stock quote sites just fine; I'm only having trouble with Firefox. Any ideas on how to fix? Thanks! Carol

When I want to login with my Firefox account it asks me for a code as 2 factor but I can't remember that I ever signed up for 2 -factor . I have 2 apps fro 2 factor: google and Microsoft but neither has Mozilla identification in it. I would like to sign up for 2 factor but it looks like someone already did that for me. What now?

My Mozilla log-in address is an old one - I have changed my email provider from xxxxxxx@TalkTalk.net to xxxxxxx@outlook.com. Although I can still get into Mozilla I can't change my log-in to make other updates. The advice provided is to make a new extra login and then make that one the primary but it does not work.

Every couple of days I am unable to access my email accounts, facebook and most web pages.

The only way I can access them is to refresh Firefox after which all work OK.

Really like firefox but am getting fed up of having to refresh it constantly any advise you could give would be very much appreciated.

I've gone through the various troubleshooting options over the last month or so and Firefox is still crashing constantly for me, even in Troubleshooting mode. The tabs crash when I'm using a Google Doc, YouTube, Discord, doesn't matter the site; I've submitted about 20 crash reports this morning alone and failed to submit several more:

https://crash-stats.mozilla.org/report/index/ced7bd3d-a768-4ada-a473-127fb0250827 https://crash-stats.mozilla.org/report/index/3886acf3-500e-406b-ab03-77b390250827 https://crash-stats.mozilla.org/report/index/bf00f2f0-4d1a-4364-b369-945170250827 https://crash-stats.mozilla.org/report/index/8568b66f-2058-45bd-a5aa-904540250827 https://crash-stats.mozilla.org/report/index/b651d050-ff74-40bd-ae42-1d4230250827 https://crash-stats.mozilla.org/report/index/b5e446ea-ed00-44cd-b68e-61dd80250827 https://crash-stats.mozilla.org/report/index/7febd586-de43-421a-b3c4-87f230250827 https://crash-stats.mozilla.org/report/index/bcc5ba90-f508-4349-aba1-e0baf0250827

Any help on this would be greatly appreciated!

Hello,

I’m experiencing an issue where I cannot use ChatGPT-5 in Firefox. When I log in and try to select or use GPT-5, nothing loads or functions properly. Other models like GPT-3.5 work normally, but GPT-5 does not respond.

I’ve already tried refreshing the page, clearing cache and cookies, and even disabling extensions — but the problem persists. Could this be a compatibility issue with Firefox? Any advice or support would be appreciated.

Thank you in advance for your help!