Firefox Community Forum

Our power went out this am and turned off my computer. I am unable to recover my Firefox bookmarks. I've done the Manage bookmarks, but when I get to Library there is no Import/Backup to click on.

I'm using Firefox in Windows. I lost all of my bookmarks... never mind how, I think I can prevent it from happening again... and I'm trying to figure out whether there is a way to recover them.

Looking in the profile folder, I see three profiles. One is listed on the about:profiles page, and is identified as the default. The other two aren't listed there at all.

I need to select each of those other two and see whether my bookmarks can be recovered from them. But how. The about:profiles page has a button for creating a new profile, but not for adding an existing profile to the page. Either it's listed there or it's not.

It seems to me that I could create a new profile and make it the default folder, then quit Firefox and replace it with a copy of one of the profiles I want to investigate. However, I lost my bookmarks by doing something similar to that, so I'm wary of doing it again.

Can someone explain what is happening here--why there are three profiles in the default profile's folder but only one list listed, and why there's apparently no provision for making Firefox list the others?

Firefox lost all saved passwords and tabs. There are no other profiles on my system. It is like I just loaded a new version for the first time. Hopefully something is saved somewhere. I thought these were all saved to my profile but not anymore.

My Firefox crashed when my laptop was inactive. When relaunching it didn't have my usual tabs open so I did the usual, history- restore tabs. This didn't work and only opened 2 tabs when I know I had about at least 15 open. Please tell me other ways I can do this? they are backed up in file library, how do I restore them from there? or any other way, this is frustrating.

Thanks

What happened, All my important bookmarks are missing. I have had to log into every account I have, No saved passwords. Really upset. I need help to restore all this information that I need

I'm running Windows 10 (from which I'm writing this), but I recently installed Firefox on my new Windows 11 laptop. Could this be the source of this (or other) problem(s)?

on my imac ventura 13 7 8 after a power outage my bookmarks vanished..follwed instructions to restore by going to menu,bookmarks,manage,and on library page after hitting restore nothing happens..please advise

This worked correctly before the recent Firefox update; the problem appeared immediately after updating Firefox a week of so ago.

Firefox 153.0.3 does not save session when Firefox is closed

Since the latest Firefox update, Firefox no longer restores my open tabs after closing and restarting the browser.

Firefox version: 153.0.3 (64-bit) Operating system: Windows 11

My Firefox startup setting is enabled:

Open previous windows and tabs

However, this setting no longer works.

Steps to reproduce Start Firefox normally. Open several websites in separate tabs (I tested with 3–5 tabs). Close Firefox normally using the Firefox menu / Exit. Start Firefox again. Actual result

All previously open tabs are gone.

They are also NOT available under:

History → Recently Closed Tabs

There is no usable previous session to restore.

Troubleshooting

I repeated the same test in Firefox Troubleshoot Mode, with the same result.

Therefore this does not appear to be caused by an extension.

Session files

I checked the Firefox profile's sessionstore-backups folder.

The folder contains, among others:

previous.jsonlz4 recovery.jsonlz4 recovery.baklz4 several upgrade.jsonlz4-... files

After testing with several open tabs, the current recovery.jsonlz4 and recovery.baklz4 files were only about 2.4 KB in size.

This suggests that Firefox is not correctly saving the current browsing session when it is closed.

The problem started after a recent Firefox update. Before that update, session restore worked normally.

I would appreciate it if this could be investigated as a possible Session Restore regression in Firefox 153.0.3.

So, whenever my Firefox updates, it seems that it completely wipes my history, and deletes all my tabs, despite it being set to "re-open previous tabs on launch".

This has happened multiple times now and is really not fun. Do I just need to make bookmark folders for everything I do? Because having everything randomly delete itself, without even a session restore in the backups folder of my firefox profile, isn't ideal.

I do have a sessionstore error for this, where I presume the problem is laid out.

1784409622095 SessionStore WARN SessionWriter.write, Caught exception:: NotFoundError: Could not move `C:\Users\SUCKS TO SUCK\AppData\Roaming\Mozilla\Firefox\Profiles\sphzxgst.dev-edition-default\sessionstore.jsonlz4' to `C:\Users\SUCKS TO SUCK\AppData\Roaming\Mozilla\Firefox\Profiles\sphzxgst.dev-edition-default\sessionstore-backups\previous.jsonlz4': source file does not exist (NS_ERROR_FILE_NOT_FOUND) No traceback available 1784409622095 SessionStore ERROR Could not write session state file : NotFoundError: Could not move `C:\Users\SUCKS TO SUCK\AppData\Roaming\Mozilla\Firefox\Profiles\sphzxgst.dev-edition-default\sessionstore.jsonlz4' to `C:\Users\SUCKS TO SUCK\AppData\Roaming\Mozilla\Firefox\Profiles\sphzxgst.dev-edition-default\sessionstore-backups\previous.jsonlz4': source file does not exist (NS_ERROR_FILE_NOT_FOUND) No traceback available

Hello,

I keep running into an issue where my group of saved tabs disappears.

I will make several groups of tabs. When I right-click and press "save and close group," to shut down my laptop completely. There are many times when I return and try to access the saved group of tabs using the drop-down arrow at the top of the browser; all the saved groups will be gone.

Normally, I find them under "Recent Tab Groups". There have been many times when they are completely gone. Is there another way to find these groups of tabs or are they disappearing completely are a certain amount of time has passed?

Thank you,

I have recently got a new (2nd Hand) PC,after my old kit became U/S,after an attempted reinstall of windows 10. my current PC 1s windows 11. Is there any way I can Retreive my old bookmarks? I have tried getting them from my old backups,but win 11 shows them as insecure! i would appreciate some help with this problem. Is there any possible way I can retrieve my bookmarks? my old pc was a dell,my new one is HP.

I should mention that I am 81 years old and am dissabled with a long term illness, so I am not computer savvy

Thank you

Firefox prompted me to update, I hit download, my entire PC froze, I restarted the computer, when I opened firefox again and hit "restore session" it restored a session that I had opened months ago. When I checked my history, everything after that older session had been deleted. All of my history from the past few months has been deleted. I tried a few different solutions from trying to research the problem, nothing so far has worked. The only thing I have found is a session restore error saying "could not decompress file", but I could not find the file it was attempting to decompress. This is the error message I found.

1785894397652 SessionStore ERROR NotReadableError when reading session file: recovery: NotReadableError: Could not read `C:\Users\ansen\AppData\Roaming\Mozilla\Firefox\Profiles\xpnhovd6.default-release\sessionstore-backups\recovery.jsonlz4': could not decompress file: invalid LZ4 header: wrong magic number: `00 00 00 00 00 00 00 00 00 00 00 00' (NS_ERROR_FILE_CORRUPTED) No traceback available 1785894397756 SessionStore ERROR NotReadableError when reading session file: recoveryBackup: NotReadableError: Could not read `C:\Users\ansen\AppData\Roaming\Mozilla\Firefox\Profiles\xpnhovd6.default-release\sessionstore-backups\recovery.baklz4': could not decompress file: invalid LZ4 header: wrong magic number: `00 00 00 00 00 00 00 00 00 00 00 00' (NS_ERROR_FILE_CORRUPTED) No traceback available

Any help is greatly appreciated. I'm one of those people that tends to have way too many tabs open at once due to poor memory, and losing months of tabs and progress is a huge setback. I'm very desperate to get the history and tabs back.