Firefox Community Forum

Dear Firefox,

I have just reinstalled my operating system after some issues. After reinstalling my browser, I logged into my browser after changing the password, but now no data is being synced. The open tabs, bookmarks and saved passwords were the most important, but none of that has synced back. After waiting for a little bit I decided to press the synchronize now button, but that also didn't do anything. Is there perhaps something wrong with the syncing right now? Or is there another way to get that data back? I didn't save it as I normally don't have to.

Thank you for your reply!

Kind regards, Lili

I’ve been using Firefox on my Mac without any issues, but I recently had to erase and reset my Mac. After reinstalling Firefox and attempting to sign in to my account, I am unable to sync my data.

When I click “Sign in” and enter my password, I successfully log in. However, it immediately returns to the message “Please sign in to reconnect,” and I am unable to proceed with syncing.

This is the first time I’ve encountered this issue.

On a positive note, I can still see my organized bookmarks on Firefox for iPhone, which were synced from my Mac before the reset.

I have the following problem and situation: I reinstalled Windows and did not write down the password for the Firefox account, and after logging in I restored the password, but it feels like my account has been re-registered, all saved tabs and passwords do not appear, but at the same time there is only one email that was used for synchronization and logging into the Firefox account. this email you can also contact through it: [email address]

Hello, I have just reinstalled Windows on my PC and when I logged into my Firefox account, none of the data I had synced up. I lost all my bookmarks, accounts, logins, etc. Is there any way to get them back?

I am trying to get rid of old bookmarks.

I logged out of all my devices except my main PC, deleted many folders of unwanted bookmarks.

changed my password

on my other devices that were not connected to sync, I deleted all bookmarks completely.

I only wanted what was on my main PC that I worked so hard on.

now tonight on my PC all the old bookmarks are back again.

this page doesn't make any sense, there is no option to "Delete data from this device" when I sign out.

[https://support.mozilla.org/en-US/kb/delete-sync-data-firefox-signing-out...]

When i starup my firefox browser All my bookmarks are gone and i dont know how to retrieve the bookmarks. do i need to setup an firefox account or what should i do? with regards

I have been a firefox user for 5 years now and i gave my laptop to repair and it was fixed with an ssd (HP NVMe SSD) to better performance and more speed and efficiency but in the process he rebooted and restarted the pc and now all my data is not there , i have some very important webpages and bookmarks in my firefox browser, i had signed in synced and done everything so that i get the data if something like this happens , however and only 3 or 4 bookmarks were imported and all the search history is gone and new even though i signed in with all my accounts and synced and tried to get the data , i remember that i did everything properly to sync and store the account data,search history,bookmarks and password s and now i am not able to get it and i tried doing it with all accounts i had logged in firefox.how do i get my search history,bookmarks,saved passwords back please tell?

We deploy Firefox via a software called Pulseway and last night it reinstalled Firefox over the current installation for one of our users. When he logged in this morning, all his data was missing from the browser as it appears to be a fresh installation. I'm unable to find his previous profile in the AppData folders (checked by going to about:profiles and opened each profile). There is no backup for this info, and he did not have a Sync account set up. Is there anywhere else I could possible recover this data for the user? Thanks in advance.

On 10/5/2024 I suddenly had no access to my saved passwords for websites, all my bookmarks were gone and no autofill works anymore. I have searched and searched for anything relating to these missing saves in password manager, I've used EaseUS, I've tried system restore. It's like my my saves were completely wiped! When I did a system restore, Firefox uninstalled itself completely when it shouldn't have. Now it's like I never had Firefox on this pc and there's no history or anything dated before today 10/6/2024. I've tried import from other browsers and there's nothing there. I'm a bit upset here, is my history, saved passwords, bookmarks and, autofill just gone and irretrievable?

My profile seems to be corrupted. Starting Firefox with that profile completely crashes the computer, but when I reinstalled Firefox and it started with another profile it was fine. Switching back to my profile immediately crashed the computer. Is there a way to extract the history/bookmarks/passwords/etc. from my profile folder without starting Firefox? Thanks in advance!

This if Firefox 131.0 on MacOS 10.15.7 (Catalina).

Hi everyone...

After I "upgraded" to Windows 11, Firefox suddenly quit working. After reinstalling, it worked again...however, I had to use the "about:profiles" command to restore the bookmarks I had. That worked fine. But after a series of cascading Microsoft 365 app failures, I decided to roll back to Windows 10. Yay! Everything worked again!

Except Firefox.

So, I reinstalled Firefox again. And once again, the bookmarks are missing...but this time, the "about:profiles" command isn't locating what I need.

Any suggestions?

Hello,

I accidentally disliked a thought-provoking story which involved the couple who died in the Lisbon funicular crash (as of Saturday 6th September 2025), which I think was addressed by The Independent.

Is it possible to reverse the dislike? The story does not seem to appear again, at least from what I have seen. Although the dislike was accidental, I felt that having the story disliked would indicate I would not be interested in thought-provoking stories about those who have died, even though these stories should be important to show.

I opened firefox profile manager using 'firefox -p' and tried to delete one profile...firefox deleted all profiles except 'default' and 'default-release'...even with them firefox renamed them with some number suffix and created new folders with the same name ('default' and 'default-release')...I have checked /home/ubuntu18/.mozilla/firefox folder...all profiles/folders gone...UPDATE: As I was typing this there was power loss, firefox deleted old 'default' and 'default-release' too...How to get all profiles back?

I updated firefox, and all my addons and sign ins are gone now. Search history and tabs remained intact. It also created a folder on my desktop, but I'm not sure how do I "extract" my old data from it.