Firefox Community Forum

Hello,

I have been using the same Firefox Account with Firefox Sync for several years.

I always reinstall Windows using a full disk format, and I have done this many times over the years. I have never signed out of my Firefox Account before reinstalling Windows, and Firefox Sync has always restored all my passwords, bookmarks, history and other synced data without any issues.

This time, after performing the same clean Windows installation and installing Firefox again, I signed into the same Firefox Account using the correct email address and two-factor authentication (Authenticator app).

I have verified that:

I am signed into the correct Firefox Account. Two-factor authentication works correctly. Firefox Sync is enabled for Passwords, Bookmarks, History, Tabs, Add-ons and Settings. Only the two new passwords I created after reinstalling Windows are present. All previously synced passwords, bookmarks, history, tabs and other data are missing. My Mozilla Account now shows only the new device. The previous computer is no longer listed.

I also checked the Firefox Sync log. It contains entries such as:

No metadata record Fresh start Wiping server data

Since I have successfully restored my Firefox data after many previous clean Windows installations using this same Firefox Account, this behavior is unexpected.

Could you please check whether my Firefox Sync storage still existed before this device connected, or whether it had already been reset or become empty?

Is there any possibility that my previous Sync data can still be recovered from the server?

Thank you for your time and assistance.

So I just switched OS on my desktop, and had to log into Firefox all over again for the first time in a bit, and it turns out that for some reason my saved passwords arent synchronising with my whats saved on my phone? In the past my experience have been that if I ask firefox to save my password on one device it remembers it on all my devices. Is this not the case? Is there something I need to do to manually synchronise?

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.

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.

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

Hi everyone,

I’ve been experiencing synchronization issues with Firefox lately.

Current situation: Tabs sync correctly between devices, but bookmarks and passwords no longer sync between my iPhone and my computer.

I’ve also considered an issue with profiles, I currently have three Firefox profiles:

• default-release (currently in use)
• default
• default-release-1

I also used Firefox Troubleshoot Mode (restart with add-ons disabled) to test the issue.

sync-log : The sync-logs show many success-sync entries and only a couple of error-syncs. There are no obvious connection issues (I’m using a shared connection in a rural area). However, bookmarks and passwords are still not syncing properly across devices.

Observed behavior: Sync is active and "functional" Only specific data types (bookmarks and passwords) are affected The issue persists even after signing out and back into Sync, and restarting Firefox on both devices

Checks already done: Sync is enabled for bookmarks and passwords Sync logs mostly show successful operations rather than errors

Hypothesis: A Firefox profile conflict

Question: How can I restore Sync properly without losing my bookmarks, passwords, or other data?

Thank you for your help.

duplicate of /questions/1574756 thread

After the latest Firefox update (ref 4b7ede), my bookmarks and saved passwords are not syncing. Tried signing out and back in.

duplicate of /questions/1574756 thread

After the latest Firefox update (ref 4f6700), my bookmarks and saved passwords are not syncing. Tried signing out and back in.

duplicate of /questions/1574756 thread

After the latest Firefox update (ref faf23d), my bookmarks and saved passwords are not syncing. Tried signing out and back in.

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?

duplicate of /questions/1574756 thread

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duplicate of /questions/1574756 thread

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duplicate of /questions/1574756 thread

After the latest Firefox update (ref 025f29), my bookmarks and saved passwords are not syncing. Tried signing out and back in.

duplicate of /questions/1574756 thread

After the latest Firefox update (ref 02fc63), my bookmarks and saved passwords are not syncing. Tried signing out and back in.

duplicate of /questions/1574756 thread

After the latest Firefox update (ref d58ebe), my bookmarks and saved passwords are not syncing. Tried signing out and back in.

Hi all, Starting at the weekend or end of last week I think, when I send tabs to another device when that device is switched off then when I open Firefox on the other device, the sent tabs are loaded in private browsing windows, not the main window with my saved tabs in. Sometimes all sent tabs arrive in one private browsing window, sometimes in one private browsing window for each tab. As I can't drag private tabs into the main window this is really annoying! How can I stop this happening please? Cheers :)

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.

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