Firefox Community Forum

Firefox has complained for sometime that my profile was created with a newer version than what I was using. I'd click OK, and go about my day. After about a month, I decided to upgrade so it would stop bugging me. When I did, my old profile did not merge, but was deleted, and now I have lost all of my passwords and bookmarks. How can I restore them when the profile is empty?

I used Firefox yesterday. My settings are to open Firefox with tabs restored - but all my tabs (as they were yesterday) are missing and when I go to history, the option to restore a recent window is greyed out. The option to restore a previous session doesn't even seem to be there.

I notice in task manager I have 15 firefox tasks. Could my window from yesterday have opened somehow in the background, but not be visible to me anywhere?

After a recent Firefox update, all of my saved passwords disappeared.

I checked my Firefox profiles and found that the current `logins.json` and `logins-backup.json` files were newly created on August 30, 2026 and contain no passwords.

However, in the older profile data I still have:

• `logins.db` — approximately 480 KB, modified August 19, 2026
• `key4.db` — approximately 288 KB, modified August 18, 2026
• `signedInUser.json`
• `storage-sync-v2.sqlite`

I opened a COPY of `logins.db` using DB Browser for SQLite. It contains:

• 392 records in `loginsM`
• 5 records in `loginsL`

The records clearly contain my saved websites in the `origin` field.

The table columns are:

`_rowid_` `id` `origin` `httpRealm` `formActionOrigin` `usernameField` `passwordField` `timesUsed` `timeCreated` `timeLastUsed` `timePasswordChanged` `secFields` `guid`

The `secFields` values begin with:

`eyJhbGciOiJkaXIiLCJlbmMiOiJBMjU2R0NNIn0`

Unfortunately, after discovering that my passwords were missing, I also reset my Mozilla account password. I understand that this may have affected the server-side Sync data.

My main question is:

Since the 392 encrypted login records are still physically present in the local `logins.db`, is there a supported or technically safe way to recover/decrypt those records and restore them to Firefox?

I still have the older `key4.db` and have preserved copies of all of these files without modifying the originals.

I am currently also attempting Windows File Recovery to look for an older deleted `logins.json`, but I would especially appreciate guidance on whether the surviving `logins.db` can be used for recovery.

Bill

Please for the love of all things holy... Tell me how I can restore my windows from my previous PC? I'm taking waaaaaayyyyyy to long just to get my windows sessions back... Also, why on earth did you remove the delete button from the search engines in settings? I need Google gone!!!

i had two different firefox browsers yesterday. I deleted one but all my passwords are gone from the other browser. When the firefox browser got uninstalled it created a backup on my desktop called bookmarksback up. how can i move that file into this new firefox and how can I retrieve those passwords?

1- Firefox shows I have windows 10. Not so. I have windows 11 home, version 25H2. This may be problem that causes the issues. 2- Since Update months ago, profiles, bookmarks and passwords disappear constantly only for me to replace manually the bookmarks and passwords to disappear over and over again. Don't need multiple profiles just one that works as in the good old days. Used it for years but cannot find help and ready to delete and just use microsoft edge. Totally out of patience. ?????????????????????????????????????????????????????????????????????

Foxfire updated a couple days ago, when it did it lost all my latest saved bookmarks. When I go to uninstall that maintainese package, I am denied access to do so.

This is a recurrent problem. I'm online with many tabs open, when all of a sudden they disappear and when I try to recover them by going in "history" [using the three lines at the top right of screen], and then selecting "recently closed tabs", and then try the "restore tabs", nothing happens! Previously, this had worked to offer me a way to reopen those tabs one-by-one, but now it doesn't restore anything. ALSO, I used to be able to shut down my computer, wait a few minutes, and then restart it, and would be offered a "restore session" option when the computer restarted, but that didn't happen today even after trying this twice.

I was once shown how to restore tabs by going up to the top right of the screen, but cannot remember how to do this. Can you please help me from loosing tabs, and my mind? Thanks.

I had my computer fixed due to a virus and now I can't get my old firefox with all my saved passwords back. How can I get it back. I'm using my same email address.

I have been using Mozilla Firefox on my mobile phone or PC since 2015. So, after so long, I found the Gmail that I used to log in to Mozilla from 2015 to 2018. Now, if I log in with that Gmail, will the previous history or data be restored or will it be Mozilla's?

What the hell has happened to the support environment? I've tried to resolve two big issues recently, and I can't find anything of value. I've lost the ability to pin an extension to the toolbar after losing my entire profile on this computer, tabs and all, using Tab Manager. I can't find a way to recover the profile, so I've given up on that. Now I can't get my most-used extensions back on the toolbar.

all your articles on 'Session Restore' or Restore Browsing History, are GOBBLEDEGOOK! links that do not work or are incorrect information! Steps which do not work or lead to a previous page which was not helpful ! " Recently Closed Tabs" or History will NOT open the latest tabs. Click to ??? "whatever" is incomplete 'cause you do not tell us WHERE IT IS LOCATED. Backup" is assumed by you, but no information to set it up! Bottom line.: when Firefox crashes, we [the user] is screwed!!

Firefox unable restore session when switching profiles and instead opening apps installed on the profile I'm switching to.

I have installed Whatsapp web (web.whatsapp.com) on "Profile 1" as a Windows app.

I have some tabs open in "Profile 1" and I switch to "Profile 2" and close the "Profile 1" window with "X" button of Windows 11 but keep the Whatsapp window open.

When I open the "Profile 1" from profile menu, my expectation is that, those previous tabs should be restored, but firefox is opening the Whatsapp web app/window.

OS: Windows 11 23H2 Firefox: 152.0.4

Today, after the last update of the software, I lost ALL my tabs (2 years of materials) and there was no way to recover them. Furthermore, I had to spend hours to retrieve at least the most important tabs I use for work.

This is not acceptable, please fix this issue and make the recovery of tabs possible and easy.

gerald.r.vargas 4. Aug. 2026, 08:23 GMT-6 Hi, this morning for some reason all the tabs I had open couldn't been loaded. Refreshening the page didn't help either. So I decided to shut down and restart my laptop.

Unfortunately after restarting Firefox only one page and its tabs have been reloaded.  All the others were gone. 

After trying about:support and session:restore it didn't help either, because only the 4th of Aug. was available. Is there a possibility for a session restore from the 03rd of Aug? or the previous days? If anybody has an idea, how to do so, please let me know.

Many thanks, Gerald R. Vargas