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I have 4 macbooks and iphone w. about 10000-19000 bookmarks. Last n. I noticed what I bookmarked on 1 machine wouldn't show on another. A pop up said "your profile has reached a limit. A device can have ony one identity..make another (sic)...." I did that, and found the bookmarks from "classic" profile, WHICH I'VE HAD ABOUT 20 YEARS, weren't imported. I uninstalled, reinstalled Firefox, managed to get the bookmarks back via a desktop folder I'd made, thank god! It didn't restore the 50 passwords, and still won't accept the previous password..which is another can of worms-it actually won't let me change my p/w w.o "you may lose your personal bookkmarks passwords etc!:" Even the 32 digit code (which I had saved) is not working...and it doesn't let you get another one unless you have a p/w!!!! Is this sounding a vicious circle....I am going to not use sync or another profile, b'c I'd rather keep my personal data (bookmarks) and rightnow, I was able to 'restore' to the original profile!!

Hello, my old laptop broke. I bought a new one, installed Firefox, and signed into my Firefox account. My add-ons synced, but my passwords and bookmarks are gone. I can't access the old laptop now. Is there a way to fix this without a backup file? Or are add-ons the most I can get? Both devices have been added to the devices in the Firefox account.

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 ?

Hello,

I'm unable to find the sync bookmarks,

I'm trying for a long time, in my iPhone and MacBook, both Apps are the latest, using the same email and the Bookmarks do not show in any of the devises.

Can you please help me?

Hello, I just completed a wipe of my whole device, beforehand I obviously signed up and synced up my Firefox account to keep my boomarks and data. After reinstalling Firefox I managed to sign in, sync up and get my bookmarks back - great. However after reopening of the app they were gone again and when checking back-ups the only available one was from after the "automatic wipe". I quickly checked my mobile Firefox app as well - it still showed a bigger of number of bookmarks so I had hoped they stayed at least there but after entering the folder they appeared empty and then gone completely after re-entering. Please if possible assist, it seems like Firefox decided to overwrite this data so maybe it's still somehow recoverable as these bookmarks have been collected over the years. Thank you in advance.

Hello, in the last couple of days I spent a lot of time deleting old accounts stored in "passwords" in my Firefox account and making sure no vulnerable passwords were still around. I did it from my Mozilla account, on a laptop.

When I was done with it, I signed out from my account on my Android Firefox app, and deleted all the cache and the data, to remove all the old password. Unfortunately, when I looged back in my Firefox account, the old passwords were still there and synced on my laptop as well.

So, is there any way I can undo that Sync? The problem is that now not only all my cleaning pointless, but I changed the password for many accounts and the Sync override it with the old ones.

so i was using my pc (and firefox) normally, when i then turned off the machine as usual.

when i turned my pc on again and opened firefox, everything was gone, i wasn't signed in and all my bookmarks and several home url's were not there, you don't need me to tell you that's not normal.

of course, i followed the most logical course of actions, i signed into my firefox account (from which i am sending this ticket), and expected all my data to magically sync, which it didn't, so i then tried to sync in manually, looking for any backup file on my pc (i couldn't find any, though i can't say i know what one looks like so...)

hopefully this can be fixed because i had auto-sync on and it would be a bummer to lose everything and slowly rebuild my browser ui from the ground up

thanks in advance, GR

Hello,

I synced my data today in mozilla and after that i reinstalled windows on my PC. now i installed fresh mozilla and logged in into my account but my data is not synced... i lost a lot of open tabs,bookmarks etc... what can i do? is synced version still somewhere or what? i did everything as i supposed to do but i cant see my previous open tabs and bookmarks..

I reinstalled a new win11 and downloded fresh firefox. Sync is not working and I have no previous data to resume working. All tabs and logins are not showing in new firefox. Pls fix the issue.

i recently switched to zorin os from windows 11 and i noticed my firefox data was gone (despite being signed in + syncing my passwords) could it be my wifi? an unrecognized device? its the same laptop + network so idk what

Sync is corrupting my bookmarks.

This is affecting Firefox on multiple Windows computers, and multiple Apple devices (phone and tablets).

Only partial data is available. The bookmark “tree” structure is complete, but the bookmarks are only partially populated (only about 15%, and it appears these are newer items).

I did not change/edit any bookmarks or Firefox settings. This did not occur after a Firefox or OS update (it has simultaneously affected Windows 11, Windows 10, iOS 26.2.1, and iPadOS 26.2.1 devices, Firefox 147.0.2 on the PCs, iOS 147.2.1).

One one computer I momentarily saw all the bookmarks (machine version) disappear as Firefox synced the corrupted version to that computer.

I know I can restore the bookmarks (at least temporarily, until Sync may re-corrupt them). What is causing sync to change MY information?

I reinstalled Windows and downloaded the browser again. I logged into my account, turned on synchronization, but none of the data was synced. I am absolutely sure that synchronization was enabled on my old browser. I tried turning it off and on again, but nothing helps. Please help me get my data back!

I bought a new PC and when I try to sync to the browser I don't receive the confirmation code by email (yahoo). I saved the address in my contacts, nothing. The problem has persisted for more than a month. What can be done? Thanks

I've been using Firefox for 15 years and since syncing has been available, all my tabs and favorites have been saved. Yesterday I saved new windows 10 and when I log in to mozzila, there's nothing?