Firefox Community Forum

Hello again.

In 2023, when I had Firefox v110.0.1, an unfortunate hiccup caused my handful of windows and their many tabs to not appear when I restarted Firefox. I asked for help here and jscher2000 was lovely and walked me through some things to do, which are discussed in https://support.mozilla.org/en-US/questions/1408206 and https://support.mozilla.org/en-US/questions/1396868.

Unfortunately, though I now have Firefox v158.0, this happened again a few days ago and I've been trying to retrace his steps the best I can with the newer version, but to no avail, unfortunately, partly because I don't now see a sessionstore.jsonlz4 file that jscher2000 referenced back in 2023.

(As I remember it, a system upgrade was taking place on my PC, and, also, a new version of Firefox {the v158.0 I mentioned} was also being installed, too.)

I found a Profiles folder (C:\Users\Bram\AppData\Roaming\Mozilla\Firefox\Profiles\p9f543mv.Default User\) that seemed to be relevant, and found a sessionstore-backups subfolder there. However, while that subfolder did NOT have a sessionstore.jsonlz4 file, it DID have files named previous..., recovery..., and (possibly connected to one of those updates), an upgrade... file, too.

When I first found this subfolder (in that "Roaming" area...I looked also in the "Local" area but wasn't confident I found anything more relevant), I copied/renamed previous... (with a timestamp from around the time of that system update, and large filesize) to previousOLD..., and the MUCH smaller recovery... to recoveryOLD, similar to the instructions in those threads. However, even if I also copied that previous... file to sessionstore... (to match those earlier instructions), Firefox would launch but with only the most-recent tabs (i.e., the Advanced Preferences {about:config} tab along with about:support {to provide Troubleshooting Information}) showing, as I'd launched them as part of my efforts to restore the session, and nothing else.)

I have "healthily-sized" recovery... and upgrade... files with the same date/time-stamp and filesize, though my efforts to try to get Firefox to open correctly have removed a similarly-sized previous... from that folder unfortunately -- hopefully the fact that recovery... and that upgrade... file have similar sizes mean they might(?) be valid substitutes for previous... should one be needed.

I hope that this described my situation well, but am happy to answer any questions you might have about it to the best of my ability.

Clearly, Mozilla updated some Firefox characteristics in the intervening three (3) years but I'm not sure how to adapt the new set of filenames to those previous instructions although, as I wrote, maybe one of those larger files will end up being what Firefox uses to try to restore everything...I just don't know what to do with it (i.e., what to rename it and/or where to copy/paste it) in order to make that happen.

Can you please offer some advice in this regard?

Thank you very much, Bram Weiser

I run normal firefox on linux. Fully up-to-date. Every time I quit the app, it reverts to a version of my profile from a month ago, and loads all the tabs I had open then, and then receives all the tabs that I sent to the device in the interim (~1 month). As I speak, it just caught the 60 or 70 tabs in this window.

I tried changing the name of my profile folder to randomstring.defaultOLD and changed one of the backups to randomstring.default. This didn't change the behavior. I'm still stuck in the loop. I saved my tabs with onetab, because firefox isn't remembering my session anymore. I thought it was something to do with updates, like it only loses its mind upon updates, but that's not true. It thinks it's updating firefox EVERY TIME, because the one time it's loading to 1 month ago it was updating, but I'm 100% sure there are no updates to firefox in my linux. It's just hallucinating.

The articles on restoring from backup are outdated. They say to use an html file. There is no html file. It's just folders for profiles, not html files. HELP!

I have been using Firefox on my Mac computer at home and on my Windows computer at the office. Firefox started launching automatically when I booted up my office computer. This only began quite recently (since last update?). When I went to undo that setting, the browser prompted me to sign in, which had never occurred before to my recollection.

Today when I logged on to my home computer and launched Firefox, all my bookmarks had been changed to my work bookmarks.

Can my home bookmarks be retrieved?

I had to uninstall Firefox. This new version will not install any of my prior settings, bookmarks, extenions, etc. I am running Windows 10 Pro and I get regular updates.BTW, sync is turned on.

Firefox update and a pop up deleted my open tabs so that I couldn't easily restore history. I tried some of the suggested work arounds but was not allowed to copy (or open file) from profile folder, sessionsstorefile. What is needed for the required "permissions"?

At random times when opening the browser, all my tabs (except the first one) turn into about:blank. Relaunching the browser does not resolve the problem, and there is nothing in the history that allows me to restore them. It is extremely frustrating, as this is the third time I have lost all my tabs.

Bonjour par erreur ont ma desinstaler Firefox avec tous mes onglets pouvez-vous m'envoyer un lien pour une restauration antérieure a la date du 11 octobre svp je suis tres embêté merci de votre bienveillance

Cdlt

Marie

My session crashed and got a message to say that Firefox had been updated...now on 158. However, none of my (many) tabs and pinned tabs opened. - 'Restore previous session' is greyed out - Session restore in Settings is configured that Firefox is my default browser, and 'Open previous tabs and windows' box is ticked. The last time Firefox updated, I spent hours going through History to find tabs and since some were older than 6 months, took me hours! Is this my only option...again! If it is, I may have to switch to a different browser. Thanks.

My laptop recently broke down and I'm wondering how to recover my bookmarks, passwords, etc. on the new one I plan on getting. I have a mozilla account and I tried logging in on my phone but I cannot see anything from the old device, even though it is the same account. Does it mean it will be the same on the new laptop? Would really love to get everything restored. Hope someone can help.

Yesterday I was able to get into my accounting, video poker, the weather and the couple of others. Now they are gone and some have paid subscriptions. I'm 80+ and have no idea how or what to ask or do to resolve this. I have Windows 11. Please help.

Firefox updated without my knowledge, and all my data, including passwords and bookmarks, disappeared. My profiles still exist, but everything else is gone. I couldn't recover my data manually or through about:profiles. When I first opened Firefox and saw that everything was missing, I was prompted to import from Chrome and did so, so now I'm wondering if that messed things up. I just want my passwords back!!