Firefox Community Forum

Seit dem 25.12.2025 habe ich meine Lesezeichen und Passwörter, wahrscheinlich nach einem Update oder einer unbeabsichtigten Fehleingabe nicht mehr zur Verfügung. ich möchte meine Firefox-Version wieder auf den Stand vom 24.12.2025 zurücksetzen. Was kann ich tun oder kann man auch telefonisch Kontakt aufnehmen in deutscher Sprache?

After the latest auto update all of my history, tabs/windows, and bookmarks were deleted and I can't recover them. I have tried importing bookmarks and it does not allow me to upload an old data file and I can't restore my previous session. I tried checking both profiles but neither had my information saved and now when I open the about:profiles says "Another copy of Firefox has made changes to profiles. You must restart Firefox before making more changes."

I'm scared to try anything else because I don't want to mess anything up further but I really need my tabs and history back.

I restarted my computer and then reopened firefox and it had updated and I noticed my bookmarks were gone but my windows/tabs were open, so I tried to choose a file on the bookmark backup and nothing was happening so I restarted and after that all my history and tabs were gone and I couldn't restore them.

Hi, there.

After performing the most recent Firefox update, I was greeted with the "create a new profile prompt", rather than having it open my old one. When going to "about:profiles", ALL FILES in the Root Directory of my old, default profile have the same date as the update, or after. Not a single file is older than that and all my history and bookmarks are gone. The option "Restore Previous Session" was not shown after the update.

PLEASE HELP!!

Thank you.

PS: This happened on a Macbook Pro. All other profiles are the same as they were before the update, having kept all history and bookmarks.

I opened a profile that I had just used recently to a blank tab bar. I closed it and the sessionstore-backup folder did not have a recent backup, The most recent about a week old.

Just for testing, I tried to restore with one of the upgrade.jsonlz4 file, about 2 weeks old, but it also had no session. I then restored one that was 2 months old. That one had a session

Now, Firefox no longer generates the upgrade.jsonlz4 files

I recently upgraded Firefox to 145.0.1 but all my bookmarks are missing. I have a backup file. I tried to restore the bookmarks by opening the Library & selecting Restore (under Import & Backup), then clicking "Choose file". However, nothing happened; no further pop-up window. Please advise.

All my Firefox bookmarks are GONE. I followed the directions for restoration, and the Restore (etc) window has nothing in it. I saved the bookmarks to a JSON (HTML) file on an external hard drive, but I cannot find a way to restore them. I'm just about tired of Firefox and the consistent problems. Please restore my faith. Thank you.

I have purchased a new computer and I want ot transfer al my bookmarks, login details etc onto the new one. I have followed the instructions given on your help pages, to no effect. My old computer ruins Firefox under Win 10. The new computer runs the same version under Win 11. I have copied the contents of Profiles from the old to the new, but Firefox says the profile is missing. When I copy and add the folders in Profiles to the Win 11 computer, there is no difference. The names of the folders in Profiles are different on each computer, so I think that it is looking for a particular file/folder name, but I don't know which one. Can anyone help me?

After the update, a window popped up asking me to select a profile. But my profile, where all my passwords, bookmarks, etc. were, was gone. I couldn't restore my bookmarks because the only one available was from today and it`s "clean." Is there any way to restore my account data? Because everything was there: settings, bookmarks, passwords, history.

About a week ago, I discovered that all of my bookmarks were gone. (And, I haven't done any Firefox updates, even in the past year.) I looked at where the bookmarks normally were, and all that I saw was the sentence, "For quick access, place your bookmarks here on the bookmarks toolbar. Manage bookmarks (link)..." When I clicked on the link and tried to restore them, there were none listed. I went so far as to try to restore my computer to a previous date. But, the only dates that appeared for a restore were dates that were after"' the date that this mess happened. I REALLY need to restore those bookmarks as soon as possible. Can anyone help?

Recently, Firefox updated and ask me to setup a profile, which I have not yet done since importing my data from google chrome in 2025. After skipping the setup, Firefox then deleted all my data and it has since been irecoverable. I have already checked the box last update that specifically said to not ask me again for setting up my profile. After the recent update, the question popped up again and now I cannot recover my original profile, all my browsing history, all my browser-saved data, and all my cookies and logins

I lost all my bookmarks after updating. I couldn't restore them, and now I have to log in to all my accounts. Absolutely everything is gone. I've tried restoring bookmarks, but it doesn't work.