Firefox Community Forum

I have 3 devices connected to Mozilla account, 2 smartphones and 1 PC and NONE of them are syncing properly, bookmarks sync perfectly and everything else fails miserably. Some part of history does sync but nowhere near the full history. Syncing of open tabs is *completely* broken.

For some reason after I restarted my laptop (firefox was opened) Mozilla was reset. I was logout from my acc and also firefox isn't my default browser (I didnt anything with it). Btw if I tried to open any link system will open it via firefox. But firefox still said that its not default browser in system. And if I open default apps in Windows I have 2 firefox there (and both recommend me to set is as default). Except FF I have only edge that also said that I can set is as default. After I login in my acc in firefox I haven't anything. No history, no passwords, extensions etc. What I can do here? I tried to use sync but as result I still have nothing.

Never cough smth like this before in same cases.

I have changed operating systems from windows to linux mint. I made sure to sync my profile before uninstalling, but now the profile looks to be empty. there are no saved passwords or bookmarks. This worked when I changed between different windows devices last year, but this time it seems stuck. I will check on a windows device when able, but in the meantime, are there any other ways to troubleshoot this?

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 ?

I installed a new Windows 10, then I installed the latest version of Mozilla Firefox v133 and there's no sync option in this version 🤔 What is the problem?

I want to recover my bookmarks and passwords

Any solution?

As you can see in the picture

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.

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.

Is there some way to open all tabs on a synced device. I have the list of tabs showing in the sidebar. However, the instruction: "While viewing synced tabs in Sidebar, right clicking on device name allows you to open all tabs from a device at once." does not work. Right clicking does nothing. Version 147.0.2 (64-bit) in Windows 11. Thank you.

Lately I installed a new PC, and tried to download FireFox and sync my data. But my data seems like a few years ago, not as new as another PC I have now. I'm sure I have logged in with same account on them, how's this happend?

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!

I use an iMac (2019) and MacBook (2015) but my tabs aren't syncing between the two.

I've refreshed the syncing a few times but the MacBook is still showing two lots of tabs for the iMac, and both of them are showing pages that are no longer open.

I'd really like to be able to move between the two so if anyone has any suggestions on how to get FireFox to sync, I'd be really grateful. :-)

I have a desktop and a laptop on firefox. I am selling my laptop so i cleared history and deleted all bookmark history.

To my horror, even though i remember i have signed out of mozilla account on the laptop firefox, on my desktop firefox all the bookmarks including bookmark folders are gone. Thankfully, i have a fairly recent backup of firefox userprofile file so i restored them.

However, to my horror once more time, I realize now firefox sync automatically deletes my bookmarks everytime it syncs so i have to turn it off.

How can i make firefox sync to treat my current bookmarks as the latest and stop deleting them?

I have switched from chrome to firefox on my windows 11 laptop. I want to do the same on my pc but after signing into the Mozilla account, the bookmarks do not come in. History, and other things seem to work fine. I tried manually synchronizing in the settings over and over again but nothing works.

about:sync-log has the following: File:error-sync-1756470933956.txt 7 KB 29-08-2025 18:05:33 File:error-sync-1756472283448.txt 10 KB 29-08-2025 18:28:03 File:error-sync-1756472834423.txt 4 KB 29-08-2025 18:37:14 File:error-sync-1756475717646.txt 15 KB 29-08-2025 19:25:17 File:error-sync-1756537352383.txt 11 KB 30-08-2025 12:32:32 File:error-sync-1756550876616.txt 7 KB 30-08-2025 16:17:56 File:error-sync-1756555300057.txt 4 KB 30-08-2025 17:31:40 File:error-sync-1756596355421.txt 25 KB 31-08-2025 04:55:55 File:error-sync-1756614480046.txt 30 KB 31-08-2025 09:58:00 File:error-sync-1756616854913.txt 21 KB 31-08-2025 10:37:34 File:error-sync-1756638623482.txt 12 KB 31-08-2025 16:40:23 File:error-sync-1756639451332.txt 17 KB 31-08-2025 16:54:11 File:error-sync-1756652104368.txt 4 KB 31-08-2025 20:25:04 File:error-sync-1756653367478.txt 6 KB 31-08-2025 20:46:07 File:error-sync-1756704617631.txt 12 KB 01-09-2025 11:00:17 File:error-sync-1756802293749.txt 18 KB 02-09-2025 14:08:13 File:error-sync-1756824621856.txt 30 KB 02-09-2025 20:20:21 File:error-sync-1756881547437.txt 9 KB 03-09-2025 12:09:07 File:error-sync-1756910518609.txt 22 KB 03-09-2025 20:11:58 File:error-sync-1756914122579.txt 32 KB 03-09-2025 21:12:02 File:error-sync-1756945880430.txt 17 KB 04-09-2025 06:01:20 File:error-sync-1756956775316.txt 19 KB 04-09-2025 09:02:55 File:error-sync-1756970167229.txt 6 KB 04-09-2025 12:46:07 File:error-sync-1757001011892.txt 11 KB 04-09-2025 21:20:11 File:error-sync-1757001024107.txt 29 KB 04-09-2025 21:20:24 File:error-sync-1757046224475.txt 16 KB 05-09-2025 09:53:44 File:error-sync-1757046230938.txt 30 KB 05-09-2025 09:53:50 File:error-sync-1757057610720.txt 19 KB 05-09-2025 13:03:30 File:error-sync-1757081977371.txt 26 KB 05-09-2025 19:49:37 File:error-sync-1757093018785.txt 148 KB 05-09-2025 22:53:38

I have no idea what to do other than going back to chrome where things just worked and I didn't have to spend hours looking at forums for solutions that do not work...

here's a screenshot from the last txt file

I moved to the Firefox flatpack after the Debian version couldn't display the code inspector/ web developer tools anymore (it was blank amid other likely javascript-based rendering errors). I only include this context in case some one else has the issue and searches for it.

I want to sync all my tabs from the Debian version to the flatpack version and similar to this solved issue I cannot access those tabs from the firefox view. However I am also unable to access these tabs from the sidebar. I am only able to access these tabs from the account menu but this would have me open each tab individually which is not feasible for me.

Is there a way to fix the "Check your internet connection If you’re using a firewall or proxy, check that Firefox has permission to access the web." error that comes up in both the Tabs from other devices sidebar and Firefox View menu?

Hello. I reinstalled my computer and downloaded Mozilla again. How can I find out what profile I was using before the reinstallation, because nothing has been synchronized in my pana@mail.bg profile at the moment?

I reinstalled the operating system, so to speak, changed my device. I clicked the sync button and it worked. I reinstalled the operating system and reinstalled the browser. I logged in, nothing happened. I rebooted, nothing changed. I clicked sync, everything was the same. Where are my bookmarks and passwords?

Hello, I imported Bookmarks when I came to Firefox from a previous browser. The experience was terrible and challenges still linger. Firefox has come a long way, however UX still seems to be a 2nd class citizen. Bookmarks now has somewhat duplicate directories and this in turn is causing desktop/phone sync doubt and is likely missing bookmarks.

When sync breaks, it is so confusing. How can I simply have a working Bookmarks sync on desktop/phone?

Perhaps there was a challenge when I need Bookmarks to appear in the top bar when a new Tab is opened, as this was contrary to default Firefox settings.