Firefox 社群討論區

Hi, All of a sudden, I lost absolutely all of my bookmarks. My PC is running Windows 11. My Firefox account was and still is logged in. At first, I thought the data loss was due to a CCleaner cleanup using their latest update. After the data was lost, I tried running another CCleaner cleanup, but this time it didn’t delete the bookmarks. So I honestly have no idea how this could have happened. These were bookmarks I had saved over many years... It’s a disaster.

PLZ Help

Bookmarks in Firefox disappeared and cannot import my Bookmarks backup. I have tried to restore an older Bookmark file through /manage bookmarks/ import and backup/restore to no avail. thank you

When I do this:

Click the menu button Fx89menuButton to open the menu panel. Click Bookmarks and then click the Manage bookmarks bar at the bottom. In the Library window, click the Import and Backup button and then select Restore.

I get a blank slate. No files listed.

When I go into the Profile, I see C:\Users\whatt\AppData\Roaming\Mozilla\Firefox\Profiles\shgdgxn6.default-release-1752271533405\bookmarkbackups

How do I restore bookmarks from that file?

Firefuxxed was refusing to open new tabs so I shut it down and restarted it (always fixes it) and all my pinned and open tabs were gone with no way to recover them, it took me half an hour to manually restore the pinned ones one by one but not all of them as I cannot remember all of them let alone all the open tabs I had (hours of research gone down the toilet).

There should be a way to backup and restore pinned and open tabs so this doesn't happen, the history option does nothing.

OS: Linux Mint 22 fresh install from a week ago Previous version of Firefuxxed updated after this shamossel.

My laptop unexpectedly closed Firefox after it crashed and upon a restart I re-opened Firefox, which normally restores all my open windows/tabs from the very last session no problem whenever it force quits due to laptop crashes. But this time when opening, it restored windows/tabs from almost a month ago. I closed Firefox and checked the sessionstore-backups folder: - the recovery-backup files are from the session date I just re-opened with old tabs - the previous.jsonlz4 file is from about a month ago and seems to be the reference point used when restoring tabs rather than my actual last session

Is there any other file or method I could use to recover my actual prior session tabs before it crashed?

I have not re-opened Firefox since quitting the browser after seeing it restored the old tabs.

Thank you in advance!

Hello,

Several passwords were saved by Firefox. They are only saved locally ( no sync with Mozilla account). I recently upgraded my laptop from Windows 10 to Windows 11. Since the upgrade, no password is available in "Saved Password" section. I checked my profile and I can find logins.json file ( with all encypted logins and passwords) and key4.db file. I suppose my passwords cannot be decrypted as they were encrypted with Windows 10.

Is there a way to recover my passwords?

After updating to version 137 today, all my bookmarks are gone. I've tried looking under "Profiles" to see if they're on another profile following the instructions from https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update; there are two profiles (default and default-release) and both have no bookmarks. I also tried following the instructions at https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks to import a backup, but Firefox finds no backups to import from and there's no "Old Firefox Data" on my desktop to restore from. Search history and recently closed tabs history are intact, so it doesn't look like Firefox has completely destroyed the profile it was using before the update, just the bookmarks. Is there anything else I should try, or should I accept that this particular library of Alexandria has burned and just begin recreating the bookmarks?

Bonjour Apres une mise à niveau de mozilla fire fox, je ne retrouve plus rien et ne peux aller sur mes mails comme d'habitude. Cela fait plusieurs fois que ça m'arrive mais en bidouillant un max j'avais réussi à retomber sur mes pieds. Or je suis en train de bidouiller depuis 35 mn et n'arrive à rien, on ne me reprendra pas à mettre à jour firefox si un jour j'arrive à le retrouver. D'ailleurs pourquoi cette "mise à jour" supprime systématiquement les programmes en place ....? Ne serait il pas possible de mettre à jour sans déprogrammer tout ce qui à été enregistré, et si oui c'est que vous n’êtes pas si doué ou c'est délibéré et c'est encore pire. Je vais creuser encore et tout fermer éventuellement pour aller voir ailleurs si c'est plus simple... Desolé Cordialement Claveau

Hello: I am trying my hardest to figure out how to move my existing Firefox profile folder (with bookmarks, passwords, etc.) to a new system. I have tried repeatedly to take the contents of the existing profile, and past them into the default profile on the new system. None of the information shows up.

The existing profile is version 115.25.0, running on a Windows 7 Pro platform.

The system I'm trying to move the profile to is a Windows 10 Pro 64 bit system. I installed the same version of Firefox on the target system.

All the files from the existing system seem to copy over to the new default profile folder fine, but no luck when Firefox is opened.

I also tried copying the entire profile folder over (leaving the folder name intact), and removing the default profile that was set up by Firefox. When I do that it just gives me a message saying it can't find the profile.

Don't know what else to do here. I have a lot of data in the old profile that I don't want to have to re-create.

-S

Hallo Zusammen,

Meine Lesezeichen sind aufgrund irgendeiner angeblichen Virensoftware komplett verschwunden, auch die Leiste wird nicht mehr angezeigt. Speichern bzw. ein Lesezeichen hinzufügen kann ich auch nicht mehr und geändert habe ich nichts an irgendeiner Software. Der Strom ist ausgefallen, habe neu gestartet und weg waren sie. Neuinstallation und immer noch der gleiche Fehler. Virensoftware ausgeschaltet, trotzdem noch. Profil ist auch nicht geändert. Ich habe alles mögliche versucht, aber ich finde den Fehler nicht.

Liebe Grüße L.

I don't know whether this happened after an update - there was one a few days ago, but I only realised this morning, after switching on the computer, that all my bookmarks are missing. The toolbar is there, empty, only reading "For quick access, place your bookmarks here on the bookmarks toolbar"... I wish! I tried to restore the bookmarks - but it seems there is no backup to restore at all. Then I tried to check my profiles, but there is only the one currently in use. Then I tried to move a tab to the bookmarks toolbar - and nothing happened. Then I began to panic: toolbar apart, we're speaking about years of bookmarks, most of them related to my research for my books... All the advice in the support seems to point towards profiles and backups, but, as I said, it's clearly not my case... Please, please, please: help!

Mozillers,

I depend heavily in my environmental and other work on Firefox and am grateful for its ability to restore previous tabs when my laptop, not infrequently, stops working abruptly.

Now the much-used bookmarks have disappeared. A search site states promisingly:

"To restore Firefox bookmarks, use the built-in backup feature by going to Menu > Bookmarks > Manage Bookmarks > Import & Backup > Restore, then select a dated backup or a manual file (like a JSON backup) to bring back lost bookmarks..."

But my Firefox's Bookmarks drop-down menu has no Manage Bookmarks option. PLEASE, what must I do?

Elsewhere I managed to find this file which apparently contains recent bookmarks:

"C:\Users\User\AppData\Roaming\Mozilla\Firefox\Profiles\unk14jlv.default-release-1647366062305\bookmarkbackups\bookmarks-2025-12-26_95_4IdGtYxezJpwuH1UIiT1bRwe1K6bcGO8rv0mqa9rUWU=.jsonlz4"

But attempting to open it with Applications\firefox.exe (default) accomplishes nothing.

FOOL-proof instructions would be wonderful. Thank you.

For the second time, FF opened w/o restoring the previous session's tabs. The first time I was able to restore the tabs. This time I can't. And can't figure out how to fix it or why this is happening since I have the restore previous session box checked.

I had a issue with my Dell laptop, when it was resolved It had deleted Firefox. They created a new one, but the bookmarks are gone. I have looked at the information on recovering Bookmarks, but still cannot recover my bookmarks.

Can I get help on this issue?

Thanks,

Riley