Forum der Gemeinschaft Firefox

I have tried to follow various help files, but can't recover any bookmarks. Everything bookmark related seems to have completely disappeared. I have the current bookmarks backup from my laptop, but when i go to the bookmark library and click on "import bookmarks from HTML" nothing happens. I am on an iMac OS 12.7.3, Firefox 150.02

My wife's old Windows 10 HP laptop quit working last week do to some Operating System failure while it was trying to do an update. It finally did a reboot and now it is useless, at least as it is! It will NOT complete the boot process after trying all of the options offered. All that I am able to is exit out of Windows to a "DOS prompt." I am able to get to the Mozilla Firefox folder and others contain within. The new Windows 11 laptop I bought her is working fine with a fresh Firefox browser installed about a week ago. What she wants is her web links, settings and saved passwords "copied" from the old laptop and installed on the new one! We have no idea how many there are to retrieve! I'm hoping that there might only be one folder that I can copy via "command line" prompt to a USB drive and move the file(s) to the new laptop the same way. Can anyone tell me what I need to know? Thanks in advance! Tim O.

Recently my installation of Firefox (Windows 10, 64 bit) updated. Now my bookmarks are apparently gone--or at least I can't see them. Furthermore, I can't bookmark anything at all, so I don't have the option of laboriously rebuilding my library of bookmarks. I don't know how to recover what I had, or even if I can at all. Nor do I know how to alter settings so I can add new bookmarks. Could someone please assist? Thanks.

With the "Open previous windows and tabs" preference checked on a PC (don't know if Mac or other has this issue), if you had multiple windows open, closing all of them at once via "Close all windows" in the Firefox app's Tasks menu on the taskbar (with multiple windows open, right click the Firefox app on the taskbar to open the Tasks menu, then click "Close all windows"; if only one window open, it'll say something singular instead of plural), it used to be so that when you try to reopen Firefox, all your multiple previous windows would reopen. Instead, it now only reopens one of them, I think maybe the last window you were looking at.

Now you could try to reopen the other windows via the History -> Recently closed windows, but that's assuming that the other windows are saved onto there, because it seems that there are times when they are no longer saved there.

I'm not sure this is for sure the reason why it's no longer in History anymore, but my place has had some electrical work being done by the city outside, so twice there have been notices given that the power would be shut off within a short period, meaning twice my PC was shut off within that short period. My guess is that after it shut off the first time, I had that short period of time to reopen the other closed Firefox windows because it was indeed saved in History, but I didn't notice that Firefox didn't reload ALL of the windows - only one. So when the power shut off a second time, that history was lost. This is just a guess - maybe Firefox auto deletes it after some time, idk. But mine are no longer there, so fml I guess.

I also tried sessionstore-backup, but the earliest one was within the last 2 weeks and the other windows still were not in the History.

Is there some second Preference checkbox option that needs to be checked, or can y'all change it back to what it was before?

You forced an update and all my open tabs vanished into thin air. I was working with those!!!

I tried to follow the history recover path, no-go. I tried the json file path and can't get Firefox to open the tabs in the json recovery file from a month ago, not that that would be helpful anyway since I want yesterday's before the update!

Now I gotta spend a lot of time finding those scientific papers again - should charge you my hourly rate for wasting my time.

It's sh.it programming that's what it is. Bet you they were using AI to do the update.

Well never mind, I've grown tired of Firefox anyway since it just starts using 80% of my RAM when I have more than 10 tabs open. There's other browsers.

Yesterday, possibly related to updating to version 148, my profile completely disappaered. My old profiles are not visible under about:profiles, but are present on disk. They can not be imported with firefox -P. How do I get my profile data back?

I opened my computer after dinner and Firefox was gone and I have to start all over again! It wants a Mozilla account & sign in which I don't have. All my bookmarks are gone!!! It's all lost!!

            Elaine Fink

bold text'I am so fed up with these updates loosing my passwords and data, why ? All my settings are messed up and last time it took two weeks to get everything back, why? I give up total idiots for releasing updates that are sub par!

I had around 3000 tabs open I closed the browser completely today. Normally when I reopen firefox all those tabs were appearing still. This time none of the tabs restored I can see tabs in history part namede 19.01.2026 although not all my tabs are there. When ever I try to reload them from the restore history part; firefox doesnt reply and doesnt take the command.

This problem has been covered in this forum before. However, the various solutions have not worked for me because it seems my backup previous.jsonlz4 was corrupted. I did exit Firefox normally, but I am not sure because I have been using multiple different browsers in recent months.

This is what happened this morning: my Firefox on Mac OSX was closed normally, and I rebooted the MacBook. Afterwards, I could not restore old tabs because "Recently Closed Tabs" and "Recently Closed Windows" are greyed out.

I tried copying recovery.jsonlz4 from the last folder and putting it into the main folder as sessionstore.jsonlz4, then reopening Firefox. Still have no restored tabs. Here was the surprise, which I do not know how to interpret.

I just checked some files and found this error message in sessionrestore-logs folder:

1770888233416 SessionStore ERROR SessionSaver write() rejected with error: Error: SessionFile is closed(resource:///modules/sessionstore/SessionFile.sys.mjs:424:29) JS Stack trace: write@SessionFile.sys.mjs:424:29 write@SessionFile.sys.mjs:47:32 _writeState@SessionSaver.sys.mjs:375:29 _saveState@SessionSaver.sys.mjs:308:17 _saveStateAsync@SessionSaver.sys.mjs:354:10 saveStateAsyncWhenIdle@SessionSaver.sys.mjs:194:14 requestIdleCallback/<@Timer.sys.mjs:180:15 observe@AsyncShutdown.sys.mjs:570:17

This isn't exactly something that is broken but it is something that is plenty weird and I wondered if anyone has an idea how it happens.

I shut down my Linux laptop one day and when I started it the next day, all my tabs were gone. Annoying, but I spent some time searching for the most important ones and got on with my life.

We have a class picture book that is only accessible by faculty from campus or using the secure VPN. It helps us to learn people's names. It is an HTML file. One day, I needed to look someone up. Ordinarily that would open a new tab in the browser I have running, but it didn't. A whole new Firefox appeared for it and there were all my lost tabs.

Wut?

Now I can use the picture book to alternate between my old tabs and my new ones. How on Earth can this happen? It isn't exactly something that is broken, just something I don't understand.

I was using my web browser and I tried to load a pdf on word. The Mozilla asked me to sign in and all my bookmarks and history was gone. A VPN was up in the tip right hand corner appeared that I had never seen before. I have no idea how my original homepage disappeared and all my bookmarks with it.

Hello Mozilla Team,

After the last update - all my 12 years of data is gone? No bookmarks or anything? No warning to do a backup? That's ridiculous guys. The only option you provided me with is 32 character recovery key I set up in 2022? Well I dont have it. Can't recover it. And if you don't intend to assist in some way - it's Game Over Firefox for me!