Firefox Community Forum

I share my Sync account across 1 Android + 3 desktop devices (Win 10 or 11). So far no problems. A few days ago all the devices started dropping out of Sync.

I would say this all started with the Android device (v.153), which seems to have logged out of the account on its own. After reconnecting it, all the desktop devices went nuts...

1) desktop machines will need to reconnect to Mozilla account every time FF is launched 2) about:logins is always empty, even after logging back in and completing a sync routine 3) even when it states "Account disconnected" - "Sync is off", they will still receive tabs sent from the Android device; they can't send tabs as they won't see the other devices. Also, even while disconnected, they were able to add a new bookmark to the account. So, account is not actually fully disconnected... only some parts of Sync are.

Another symptom. Account's Connected Services list is clean and up to date (see images). Account recognizes new logins as already known hardware and avoids doubling them. But in Sync there's a mess of instances... all new attempts are seen as a new device. Many of these are of course dead links, as the latest login overwrites previous ones.

This happened while desktops were updating to v.154, but I wouldn't say it's related to that, as two of those machines also run a different Mozilla account on a second profile, and so far that account is not misbehaving.

The Android device also got disconnected a few more times, but now it seems more stable than its siblings, and the passwords are still accessible (as as you can see in the pics, it's not showing as a doubled Sync device).

I didn't try signing off all devices because I'm worried I won't be able to get back in... anyway, manually signing off a single one didn't change anything.

It seems to me this is a server-side issue. Is there a way to "refresh" the account without losing all data? Thank you

I started using the new "Profiles" feature in firefox, and I created profiles one one device. However I am finding that the profiles are not syncing across my devices. Both are Windows 11 VMs, I tried doing manual syncs, singed out and back in to both devices. But the Profiles I create on each just do not seem to sync, is this the expected behavior ?

Anybody else having issues with this feature? It had been working well to send tabs from my tablet and phone to my desktop computer, which I have been doing due to the lame way that FF uses for filing bookmarks into folders on the mobile devices.

A few days ago I started seeing "unable to send" popping up after a delay, instead of "tab sent" which typically appears immediately. Sometimes, the tab is sent even though it says it wasn't and sometimes it will send it after repeated attempts, and other times it doesn't. My wireless network and ISP connection are high speed and reliable.

So far, the problem only appears when trying to send from mobile to desktop. Sending from the desktop to mobile seems to work fine. The problem started while using 147.0.4 and persists after upgrading to 148.

Hello Mozilla Support Team,

I am writing to request assistance with recovering my Firefox Sync data.

I recently reset my PC and after reinstalling Firefox and logging back into my Firefox account, my bookmarks and saved passwords are completely gone. I believe the sync may have overwritten the server-side data with an empty local profile after the reset.

Account email: [edited from public] @gmail.com Approximate date of data loss: 02 25 2026

I had been accumulating this data for approximately 1 years and it is very important to me. Could you please check if there is any backup of my sync data on your servers that could be restored?

Thank you for your help.

Hi! I recently lost my old laptop and I'm trying to setup my new laptop without a backup. I was logged into my mozilla account on my old browser before I lost it, but I'm not seeing any of my old tabs, bookmarks, and extensions from my old browser syncing to my new browser. Is there anything I can do to retrieve this data without having access to my old laptop? Thank to anyone who can help!

what happened:

1: my pc is broken, then I got new system and hdd. 2: I download firefox and login. 3: Press Sync now and nothing happen.

ARE YOU KIDDING ME ?

What I want:

I want my bookmark back.

I used firefox soo many years.

PLS tell me I can take it back.

Hey, I am trying to synchronize my mobile tabs with my desktop app. Unfortunately, this is not working. I am using the latest version of Firefox and Windows 10. Any ideas how and if I can solve this problem? Thank you in advance.

Hello,

For some reason, when I try to sync all my stuff from my desktop Win 11 firefox/duckduckgo system, to my new Win 11 laptop, the only option I can get is to sync with a mobile device.

I had no trouble doing this some months ago with another laptop, but this time I cannot find how to do this after trying for over an hour . . . . . .

Has anything been changed that won't allow syncing with another 'big' device, please?

Hi ich habe versucht, die einstellungen zum einem fehlgeschlagenen login mit hilfe von chaptjpt zu verbessern. habe dadurch mein konto verändert. mein password neu erstellt und wiederherstellungsschlüssel ist nich korrekt. auf dem iphone ist alles drauf aber mit dem sekundären email adresse und das password ist auch weg wie kann ich die einstellungen lesezeichen auf den firefox im rechner übertragen?

schon mal Danke für die Hilfe

Firefox is disconnecting my account every time i restart the browser. I've made sure it's not set to clear data when restarting. I found a support forum post for mac where they weren't installing it and were running it from the dmg, but i'm using the firefox that was installed during cachy installation, which firefox gives /usr/bin/firefox, when runnign it from terminal (or anywhere) the command in btop is /usr/lib/firefox/firefox. its really frustrating because i lose my session data, have to log back in again, have to redownload all my extensions, ahve to reconfigure all my extensions every time the browser restarts

I'm on CachyOS on COSMIC de with a btrfs file system. I've tried uninstalling and reinstalling firefox. I've tried making a new profile. I really don't want to use a different browser, but this isn't functional.

Firefox was somehow reset after windows update restart. I was trying to sign in to sync, but sign in button gets blurred/disabled, and nothing happens then. I am afraid that I lost my previous session also.

I was trying troubleshooting mode too, but behavior is the same.

Otherwise I can login to my Firefox account web, and I am logged in on my smart phone still.

Hello! I try so transport my tabs in Firefox to a new PC. Therefor I try to login, to be loged in I need an email with an code (6 numbers) But this email isn´t sent. I didn´t get it, or much to late. What can I do? Thanks for your help, best regards Kurt Füchtler

Right after updating Firefox to 155.03Beta, bookmarks, history, and synchronized tabs are completely empty on the sidebar. No data, at all, except for AI Chatbot's xml's. Didn't downloads once appear on the sidebar, too, by option? You have to go to Tabs and Browsing >> Browser Layout and select Show Sidebar to customize any of it. Library (Downloads and History) will not even show nor import anything. Not only this, but the new appearance of the sidebar is different, and about:preferences (settings) does not show their page titles, anymore, but only their icons. Settings tried to load when first opened, but it failed to name them. Is there some configured file and/or data on the beta that will not let each of these names and icons appear properly?

Hello Mozilla. I am logged on to my Firefox account on a new computer. Although I have logged in, I haven't experienced Firefox automatically syncing my bookmarks and extensions as I did two computers ago to this last computer. I have tried syncing numerous time (pressing the sync button in my account) to no avail. What do I need to do to get this working? Thank you for your time and attention.

захожу в свой ак, но ни закладок ни паролей нет, год назад синк работал, все перенеслось, даже если и отключил синк, то должно же хотя бы годичной давности все перенестить

I just wanted create Account recovery key to keep my account more secure. So I did that + updated my password.

Now when I open the browser, it says account disconnected and that I need to create a new profile. I did that, but it started syncing from old chrome account with old extensions, bookmarks etc. Plus bookmarks from my phone.

I try to sign in and create new profile with the original profile settings that I want. But it keeps saying "This profile was previously synced to a different account". And now that I saved the bookmarks and made a third, fourth profile. Those don't work as it wants me to sign in. Only the 2nd profile that Firefox made me create which has the old extensions, bookmarks etc. It is missing a lot. So now I am just stuck in create profile loop. And cant use the one I want because I wanted more security? Do I need to uninstall and install again, would that help? I wish there was someone to talk to help me. I just want to use my original profile that I used earlier today to update the security settings.

I changed the password of my Firefox account recently, which logged me out of my Firefox iOS app. When I'm prompted to scan the QR code to re-establish the pairing, nothing happens. When I choose to use email instead, I get "unexpected error". This happens every time I try to re-pair. Please help me sign in to Firefox iOS.

I tried linking my unlinked profile to my email, I made a typographical error there and when I tried to undo it, Mozilla says this profile is already linked to that email. Mind you, I have not even entered a password or verified that email address yet. I cannot even remove that email from the profile now, even if I do and try to re-sign, the accounts page says I am already synced to the typo email.

I uninstalled Firefox on my computer and reinstalled it, but when I logged in, the account couldn’t sync, it was as if the sync couldn’t retrieve any data from the server. Nothing happened at all.

On my Android phone, the data is still there, but when I tap “Synchronize now,” nothing happens either. I’ve tried signing out and signing back in multiple times, but still nothing works.

I also tried switching to a different computer and a different internet connection, but it still didn’t work.

What should I do now?

duplicate of /questions/1574756 thread

After the latest Firefox update (ref c93967), my bookmarks and saved passwords are not syncing across my devices. I have tried signing out and back in but the issue persists. Any suggestions?