Firefox Community Forum

Firefox keeps forgetting my bookmarks, so I uninstalled and reinstalled Firefox. After reinstalling, Firefox defaulted to my wife's profile. I then tried to recover an old backed up profile using sync. I selected the right profile, but Firefox reports there are no compatible files in any of several backup file folders.

Restarted my browser to update, and it 1. crashed my computer, and 2. erased all of my bookmarks and previous information. When I tried to log back in, it said that I couldn't restore anything and that I didn't have an account with my information already attached, even though I've been using FireFox and have saved bookmarks for years. How do I get it back? I know it exists somewhere, so I don't understand why I can't find it in the app now. It doesn't make any sense why it would seemingly crash my computer, too. Please help.

A power surge took out my computer during a Windows up date, I could not recover anything, so did a fresh install of Windows........now, I can't get Firefox to bring over my bookmarks. I am so upset and lost right now, I'm sure I'm just missing something to do. Please help.

Mir ist mein Computer abgestürzt , musste ihn neu aufsetzen . Nach der installation von W11 25H2 , neueste Firefox 64bit installiert und versucht Lesezeichen und Passwörter zu syncronisieren OHNE ERFOLG alles WEG WIESO ????

I had some issues with Firefox so I removed and I reinstalled it. I had a Firefox account with sync enabled on since one year ago. However after the update, I couldn't recover my old profile: my bookmarks are gone. I don't know what to do. None of the guides were helpful. With an account and sync on, should have been enough to restore my data, right?

Firefox has reset entirely.

All of my profiles, bookmarks and saved passwords have disappeared; only history from this session appears. When I look at "Sync" I see the tabs from one of the profiles in the "Tabs from other devices"... it looks like Firefox thinks I have signed in from a new device, but I haven't.

The "tabs from other devices" lists the tabs from one profile under the correct device name. I am hoping all of the profiles, bookmarks, passwords etc are in there still. How do I "reclaim" these profiles on my laptop?

Where is this information stored so that I can access it?

Quite simply I replaced the dead power supply on an old PC of mine and booted it up to start using it again as a work PC.

When I did the now decade old version on firefox told me I might want a clean reboot which I clicked Ok since the history was so old on it as to be irrelevant. Firefox closed but didn't reboot. So I launched it again and simply chose not to restore the old tabs when prompted (not even some of them as that was also an option). I updated the old version on firefox I had on it before restarting it and logging into my firefox account to sync and try to transfer my work tabs to the old PC. When I did so I realized on the old PC that reopening Firefox didn't reopen where I had left off. I thought it was just the update but did a check nonetheless. Opening a couple of random tabs before exiting firefox and launching it again. It didn't reopen the last tabs. I checked the settings: "open previous windows and tabs" was checked. Did a brief google search that confirmed my next step: uncheck that box > exit firefox > launch firefox > check the box again > relaunch firefox. I did all that and was still not getting my tabs back.

Then I went back to my current PC (where I had changed nothing) and missclicked (I think I was going to the settings) exiting firefox there (3 windows and probably ~60 tabs ... yes I have a problem). And now even on my main PC firefox didn't restore windows and tabs!

I hoped I could go to history > reopen closed windows but no dice. The option is greyed out. That is also when I noticed I had no history whatsoever.

Now I unfortunately relaunched firefox a couple of times here trying to troubleshoot BEFORE I went online and saw that I could have possibly restored the last session using some backups.

With all that in mind can I still restore my tabs/history somehow? And why isn't firefox picking up where I leave it even though the option for it is on?

All of this is on firefox v148.0 on win10 for both PCs if that's relevant.

Thx in advance for any and all help!

I just reinstalled my OS (Windows 11), and installed Firefox, logged in, and just couldn't believe my eyes. Everything is just gone. Passwords, history, everything. Why then Firefox Sync is using email and password if it doesn't have any cloud storage for passwords and doesn't even work like chrome? Should I install Firefox on my iPhone to regularly sync two devices (manually), to store passwords on another device, then sync back?

j'ai restaure w11 en supprimant tous les fichiers, puis mise a jour mon compte mozilla qui avait 2comptes 1 perso et 1 pro, pour mettre a jour a 1 compte par session pro et perso et éviter confusions ,j'ai certainement fait une mauvaise manip et je ne retrouve pas mes marques pages et mon organisation . puis je retrouver ces marques pages ???? en me reconnectant a mon compte initial et resynchroniser pour info le mot de passe du COMPTE PRINCIPAL MOZILLA a été changé car les 2 dossiers qu'il incluait avaient la même adresse mail . pour faire simple :

COMPTE PRINCIPAL MOZILLA  : cccc adresse gmail mdp : xxxx123

dessous  : compte PRO  : cccc adresse gmail mdp : xxxx123

dessous  : compte perso  : JJJJ adresse gmail

je pense avoir tt essaye , vu que j'ai restaure w11 et supprime les fichiers je n'ai plus l'anteriorité , le fait que j'ai change le mot de passe du COMPTE PRICIPAL DE MOZILLA a du ecraser les donnes . qu'en pensez vous avec mes remarciements

To whom it may concern,

After the latest update I was met with a blank profile, no saved data, even when syncing with my Mozilla Account. I followed the back-up instructions by the support team described in the forums, but it wasn't enough. Common sites I frequent like youtube and gmail were not indexed, the passwords and logins were nowhere to be found. I really don't get what's going on, or why would the Mozilla Account wouldn't recover the data, while leaving that to profiles. Is there any way to recover it further? Or even disable profiles?

Thanks in Advance,

So recently I had reinstalled windows and reformated all my drives, I am also sure that this account is my only firefox account. But when i checked the sync data it shows only 1 sync data which is today 14/3/2025. I am also sure that I had left all my sync data as default therefore it should have automatically sync. But currently I do not have access to my bookmarks, etc

You jerks deleted passwords and bookmarks I needed for work just because I reset my password to login. Why in gods name would you think that's a good idea? Why would I ever use your sync function if you're gonna delete my data the moment you get the chance?

I wanted to open firefox and a new window for new firefox open but did not suggest me to sync my old bookmarks. instead it only asked me if i wanted to sync with chrome browser only. why was i not allowed to save old bookmarks before new firefox updated.

I am having trouble logging into my bank account. Message is saying error, secure connection failed. An error occurred during a connection to online.newcastlepermanent.com.au. PR_CONNECT_RESET_ERROR. Have not had problems before. Please help.

I am trying to find a way to restore the previous tabs that I had open. All the standard restore procedures out of the History button or elsewhere are not working due to the account change. Here's the background and scenario: Original account created 1 month ago on old Linux PC New PC purchased and Ubuntu Linux 24.04 installed Firefox installed and configured, bookmarks imported from .html file. No sync account was ever signed in to. Open a crapload of tabs that I wanted/needed to interact with (yes, I need a better task management system) Finally decide to log into sync account, successful sign-in Close browser for PC restart. Upon restart, all configurations from 1 month ago on old Linux PC are present, and no previously-opened tabs come back. Restore session/restore tabs/restore browser all are greyed out, no data to access in history anywhere. Signed out of account, closed browser window and restarted. Still displaying config from old sync account even when not logged in (different theme, toolbar settings)

I am unable to locate any files in the pathway Home/snap/firefox/common/.mozilla/firefox that clearly indicate multiple profiles; there is only one distinct profile folder present. I haven't cleared cache or anything, trying to not touch it more. Is it possible to restore or even see the URLs of those tabs from my session prior to logging in to my sync profile?

Firefox keeps just not work after I restart my Mac on the latest OS.

Now I have reloaded firefox and all of my bookmarks are missing and the account is unscynced?

I had to reinstall my operating system, and thought the Sync with the passkey would allow me to recover my saved passwords and bookmarks. But I put in the key I was given and nothing was recovered. Did I completely misunderstand how the Sync was supposed to work?