Diễn đàn hỗ trợ Firefox

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.

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.)

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.

Every time I try to use my camera or microphone on some websites from on firefox it says can't detect camera or microphone? It doesn't show up with the 'allow this website to access your camera/ microphone' pop up it does with other websites. I went into permissions and manually changed it myself and it said it still couldn't detect the camera/ microphone

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 !

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!

the msg returned

Hmm. We’re having trouble finding that site.

We can’t connect to the server at marvelsearch.com.

If you entered the right address, you can:

   Try again later
   Check your network connection
   Check that Firefox Developer Edition has permission to access the web (you might be connected but behind a firewall)

i am using a local dnsserver and firefox is connected to it. is this the reason? if so how can i disable this? other firefox features are working beautifully.

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.

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.

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.

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

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