Firefox 社群討論區

Hello, I am currently using Firefox Beta and I would like to switch to the regular Firefox Release without losing any of my data (browsing history, bookmarks, passwords, add-ons, and settings). I would appreciate guidance on the safest recommended method. Specifically:

Is it safe to install the Release version over Firefox Beta, or could this cause data loss or profile conflicts?

What is the best way to create a full backup of my Firefox profile beforehand?

Should I expect any issues with add-ons after moving from Beta to Release?

Do you recommend enabling Firefox Sync as an additional safeguard, or is a profile backup enough?

In case something goes wrong, what are the recommended recovery steps?

My setup:

Operating System: [windows 10 ]

Thank you for your assistance.

Hi,

Looking at my Firefox 147.0.1 settings for macOS 26.2 (Apple M1), I'm trying to adjust two settings:

-- I'd like to remove Languages -> English (GB) (its existence has odd side effects, like triggering United Airlines to offer fares in Pounds Sterling, and I'd prefer to just have English (US))

-- I'd like to disable Play Audio and Video for about:welcome (in regular and private windows)

I can see no way to accomplish this currently -- why?

Thanks.

Hello !

How can I retrieve password and usernames that are saved in the login forms of visited websites ?

I know how to see "password and login" in Mozilla settings (Private life & Security / Saved Passwords).

But on some websites, the connection to my account is automatic : password and usernames are saved in the login forms (like cookies may be ?), and they are not present in Mozilla setting and Saved Passwords.

I didn't find anything in the web on my request.

Is it possible te recover this recorded data ?

Thank you by advance.

Hello.

1. How to save a tab group without closing it? 2. How to make individual tabs in a tab group permanent? (So when you close a tab group only the permanent members are preserved.)

Dear Firefox

Every few days the sidebar reappears.

I DO NOT WANT to use the AI chatbot.

Having tabs from other devices is all that useful to me. It feels like something that's just there to justify the AI chatbot bar existing.

I can access bookmarks and history from the toolbar. Don't need a new sidebar for that. They don't justify your stupid AI chatbot bar.

I DO NOT WANT TO USE YOUR AI CHATBOT. YOUR SIDEBAR IS LITERRALY NO DIFFERENT FROM A POP UP ADVERT. SO STOP HAVING IT POP UP AGAIN AND AGAIN.

Device name DESK Processor AMD Ryzen 3 3100 4-Core Processor (3.59 GHz) Installed RAM 16.0 GB System type 64-bit operating system, x64-based processor

Edition Windows 11 Home Version 25H2 Installed on ‎12/‎01/‎2026 OS build 26200.7623 Experience Windows Feature Experience Pack 1000.26100.275.0

Hello,

I have two windows in Firefox that I would like to tile so that I can compare the contents of each. Is this possible ? Regards

pyor66

Hello,

When I try to visit a specific journal site that requires authentication, the browser automatically redirects me to an authentication page that I have used before. This is very annoying because every time I click a link to the journal, I’m sent to the other portal and can’t access the article. I want to stress that I haven’t installed any add‑on that would cause this redirection. I think I did that myself manually but I have no idea how. I’ve already deleted the cookies for both sites, but nothing has changed. I hope that makes sense, it’s a bit difficult to explain.

I'm using firefox 147.0, on mac Tahoe 26.2.

Thanks for the help !

An error occurred during a connection to portal.esic.gov.in. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

bp-f7b43b48-1330-4328-a36a-2d3f10260127

Firefox has been crashing regularly for a full day now. I have one profile with multiple extensions, and a fresh profile that is meant to test firefox without any. With this new, "clean-slate" profile with none of my extensions installed, I still get repeated crashes. It is getting in the way of my ability to work- it happens even in Troubleshoot mode, even though I could not confirm any hardware issues prior to this.

Will I need to delete the extenstion-filled profile entirely before going forward? Is there an update I need to install, or anything else I should do myself? Should I provide a list of my extensions?

Attached is the Report ID of my latest crash- hopefully it will help.

Thank you!

So I guess my Firefox update to ver. 147 from 146 by its auto update feature, but I realized all the past personal data (ie, history, cookies, passwords, profile, etc) was gone.

I have Mozilla Account (I think it's the same as Firefox Account back in the old days), so my personal data is now retrieved from some device as far as possible, but I lost local personal settings like Shortcuts on the main page on my laptop,p which is the main device to do everything.

I can't help what happened to me, and I will rebuild what I used to be on that day, but I am curious if it's just me, or there is some logic to cause this data loss.

Recently, Firefox updated and ask me to setup a profile, which I have not yet done since importing my data from google chrome in 2025. After skipping the setup, Firefox then deleted all my data and it has since been irecoverable. I have already checked the box last update that specifically said to not ask me again for setting up my profile. After the recent update, the question popped up again and now I cannot recover my original profile, all my browsing history, all my browser-saved data, and all my cookies and logins

How can I control which languages are default in the translate tab module thing?

It always comes up with "Translate from Spanish, To English". And I have to manually choose every time, which takes up time.

I wish to have it defaulted as "Dutch -> English". I've already se the setting to "Always offer to translate" and "Always translate dutch", but I still have to do it manually sometimes.

Thanks for your help.

Ffx 147.0 / Mac OS Tahoe 26.2 / HP printers

Print dialog page margin custom values appear in mm only. No option for inches here.

As recommended years ago for earlier Mac OS and Ffx versions, I've tried the about:config dialog. Changed several universal page margin unit settings from 1 (mm) to 0 (inches), and also or my specific printers, for top, bottom, left and right. Also have tried to disable "unwriteable margins" settings, universal and printer-specific.

But the Print dialog Margins|custom (mm) seems to be hard wired, so not responding to changes in configuration settings.

Also have ensured that all Mac system measurement specs (Language, Region) are US and not metric.

Any ideas will be appreciated.

They play for a couple of seconds, then the panel they are playing in goes black. They used to work a month or two ago. Videos play fine in YouTube. They also play fine in apps like VideoPlayer and VLC. They play fine in Chromium based browsers Opera, Brave and Vivaldi. My graphics card requires switching acceleration off. I can’t find a switch for that in Firefox.

Problem Videos start playing, then after a few seconds the video panel turns black. Audio may continue. Refreshing does not help.

Environment

   OS: Fedora Linux 43
   Firefox 147.0.1 (also tested Firefox Flatpak)
   Display server: Wayland and X11 (both tested)
   Hardware acceleration: on and off (tested)
   Media Source Extensions: enabled (disabling MSE triggers an “unsupported device” error)

What works

   BBC News videos play correctly in Chromium-based browsers (Brave, Vivaldi)
   Videos play correctly in mpv/VLC
   Other video sites (e.g., YouTube) play correctly in Firefox

What I’ve tried in Firefox

   Disabling hardware acceleration
   Disabling VA-API
   Disabling WebRender
   Disabling RDD sandbox
   Running Firefox under X11
   Using the Firefox Flatpak build

None of these measures help. This suggests the issue is related to Firefox’s interaction with BBC’s player on Linux. Has anyone else seen this, or is there a known workaround?