Firefox Community Forum

I have been trying to enable Firefox Sync on my Windows 11 PC (Firefox 145.02). I open the Firefox Sync window, I click on Log In, I enter my e-mail and click on "Sign up or Sign In" and then the view freezes and I never get any further. The attached screen capture never changes, no matter how long I wait.

I have a profil i didn't use since 22 days because computer issues

I need to retrieve ALL my tabs from this device For some issues i could'nt to it all before.

Now, i can see in my firefox profil pge, the profil exist. But if i go to my firefox installed in my new computer, i don't see THIS firefox device with ALL my VERY IMPORTANT tabs.

Is there any way to retrieve them ?

firefox from linux mint 22.3

thx

My account won't sync my old passwords and browser history. I recently reinstalled windows and when I tried to sign in to my mozilla account my data wasn't there.

After Installing new system on my laptop and singing in to my Mozilla account nothing was restored from it. Everything is empty as it is completely new account but I created this one few years back and never had a problem with a sync. Hopefully it will be restored since I had large amount of important bookmarks. If you can check and resolve it please. Thank you.

S.M.

When I choose add new device the website displays 2 choices: mobile with installed Firefox app or need to download the app.

I chosed mobile with installed app then the website return to this main page without show the QR to scan from app.

Now, I logged in using email on my Android mobile and failed to sync my web browser profile..

I reinstalled my pc and when I log back my firefox browser, I can sync everything back, but not the content in my Notes extension, I really need that and can anyone help me how to recover those notes?

On a new computer, I entered a new Mozilla password, and Mozilla on new computer won't sync with my old bookmarks, which still are on old computer.

Sync doesn't add these bookmarks.

Both computers now sign in with new PW. I can't go back to old PW (doesn't have current standards).

How to get sync to work, and get my bookmarks on new computer?

after a fresh reload of windows was performed on my machine, I signed into my Mozilla account but none of my bookmarks were appearing after the successful sign in. When I tried syncing it still did not appear. There are bookmarks that I had saved on firefox that are essential.

When I right-click on a website and choose "send page to device", I get the notification "Sent!", but nothing actually happens on my other device. Yes, I am logged in with the same sync account on both devices.

Hello  I have read all the recovery related articles in the help section of the site and if there was a way to recover, I have tested it. I ask my question once again:  How is it possible that after I log in to Mozilla Firefox and sync my account, instead of recovering the information, all of it is deleted from other connected devices as well? I didn't even have time to make any changes in the sync menu and my account, and as soon as the sync was done, instead of recovering the information on the device that I had just synced, the information was deleted from my old devices such as my Android mobile phone, without my intervention. This is a very big and important problem and rest assured that there is no explanation in the help section about this. Please understand the problem and refrain from sending me links to re-read all the articles I've read.

I've just finished building a new machine and have installed Firefox:

ESR 45.9.0 (OS/2 port)

I want to sync it with my other machines but, when I try to log in, I get:

Blocked By Content Security Policy This page has a content security policy that prevents it from being loaded in this way. Firefox prevented this page from loading in this way because the page has a content security policy that disallows it.

I know the account is good, I'm logged onto it right now from another (Windows) machine; and I was able to log on and sync from the OS/2 machine this one replaced.

So what can I do to fix this?

Thanks.

Hello.

I have made a fresh install of Windows 11 from Windows 10, and after logging into my account everything syncs, apart from my bookmarks. As i have made a fresh install, i deleted all of my old files on the computer. Is there any way to get my bookmarks back?

Hi there,

I've recently made the move to Windows 11, and since then I've been having loads of issues with firefox hanging and crashing. I've been able to correct the issue for about a week at a time by clearing my startup cache, but I did so incorrectly recently and it corrupted my profile, resulting in the need to create a new default one.

I'm able to launch firefox okay now, but when I try to sync my bookmarks and settings, firefox freezes every time immediately upon login. Is there a way I can sync my settings without using the firefox UI in order to circumvent the crashing issues present in the UI?

I recently upgraded from Windows 10 to Windows 11. I was under the impression that my bookmarks would be saved to my Mozilla account and I could then log in on the new computer and the bookmarks would come over also. Is this accurate or will I have to go about recovering my bookmarks a different way?

As of now when I log into Mozilla I get a message at the top saying "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. I clicked Learn more and tried the troubleshooting options, but no luck in fixing the message or issue. Thanks for your help.

Rasbperry Pi 5 desktop OS -> Firefox 142.0.1 (aarch64) -> Open application menu -> Settings -> Sync -> Sync logged into firefox account -> Syncing: ON -> tap Sync Now -> Syncing... -> complete in 5-10 seconds.

Phone iPhone 11 iOS 18.5 -> Firefox app -> not synced.

It seems I have to not just open phone's Firefox browser, but navigate to the phone's Firefox's Sync settings and then I see Firefox phone app syncing.

Unintuitive, needs improvement or some notification to remind of small human needed interactions.

I changed my email and my password for my Firefox account, on my primary laptop (MacBook Pro 2010). Both my smartphones (Android) synchronized afterwards without a problem, but my second laptop (MacBook Air 2020) asks me to sign into Firefox with the old email and does not accept the new email. When I put the new email, it gives the message in the attached screenshot (in German, sorry if the translation is wrong): "Cost limit is reached. Profile was previously synchronized with another account. Create a new profile to synchronize it." But I do not want to create a new profile, I do not want any subprofile that I would have to build up from scratch, and it is no solution to the original profile lingering around on the second laptop without ever being able to be connected to again.

I uninstalled and reinstalled Firefox from the second laptop, hoping the sign-in-data would be removed and I could just sign in to Firefox with my new email address, but no. It shows the same sign-in-form with the old email address and the same message.

I need help urgently. I have to travel and can only take the second smaller laptop with me. I hope someone can help me.

Witam , Zakupiłem nowy komputer , zalogowałem się na swoje konto Firefox . Zrobiłem synchronizację , ale żadne dane się nie pobierają , ani zachowane zakładki oraz zapisane hasła. Chciałbym odzyskać te dane. Chodzi mi o dane z 14.11.2025 Dziękuje i pozdrawiam