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duplicate of /questions/1558885 thread

I just bought a new computer. How do I sync firefox on my old computer with firefox on my new computer. The same for thunderbird mail. Please help. I am not a computer genius. Dave Muran [edited email and phone# from public community support forum)

Today I installed a clean WIN10 version on my PC, expecting to just log into firefox afterwards and have all the data back within minutes, but I forgot my Firefox password... As I'm currently in another country I also couldn't just log in on any of my other devices to recover the password, so I decided to reset it via the E-Mail... well aparantly changing your password deletes the sync data?? I'm guessing there is no way to recover the data? So I got a relative of mine to start my backup notebook which has not been synched for a few months but some data should've still been there, at least I had thought so... password database there was empty... and instead of synching the firefox landing page from my notebook where all my pinned pages were, it copied the page from the new device and wiped that as well... Any way to revert the sync changes on the notebook?

"how to revive return all 124 tabs of prior sessions ? in Firefox...older version ? please help. & How to avoid if close by mistake 1 window with all ....vs 1-2 tabs only ? " HOW revive replace lost all tabs 4 days ago ? '

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.

Had to restart my computer because it froze, but when i open firefox all my tabs are suddenly gone, this has never happened before and i do force restart my pc plenty of times.

the "restore previous session" button doesnt even show up in my menu; my about:profile page doesnt show or open my previous activity; and all my files in the sessionstore-backups folder are way too small and recent to be holding my old tabs ( i had over 300 open)

What can i do?

I am currently running Firefox on Windows 11 (24 H2) and today, like I have usually done a lot over the past years I opened Firefox, did some browsing, then I quit the app. When I later opened Firefox (version 130.0.1 (64-bit)) no a single of my open windows got restored.

I have been relying on Previous session being restored. Today however, it did not work, and the option to use "hanburger menu" -> History -> Recently Closed Windows" do not show my windows I had open.

How can I find my old sessions? Can I restore them somehow from backed up data?

I use Firefox on Ubuntu Linux, and it works fine.

For unrelated reasons I have created a new Linux Mint 22 boot partition, and I would like to use the same Firefox profile on both Linux OS-s, without having to move or copy the existing profile I use on Ubuntu. (The profile is placed on a third independent data partition!) I cannot find any information on how to do it. All information I find involves moving the profile, but then Firefox on Ubuntu would not be able to continue to use it.

I look forward to hear from you. Thank you. :-)

For example, say, you have 3 opened tabs in a Firefox (FF) windows. Normally, when you close FF and then re-open FF, it restores 3 previous opened tabs.

But, if you have another FF windows opened at the same time, when you close the FF windows with the 3 opened tabs and re-open back a new FF windows, FF won't restore the 3 opened tabs.

Same thing happens when you have another Private FF windows at the same time, when you close the non-Private FF with the 3 opened tabs, and then you re-open FF, it loses the 3 opened tabs.

That's why you can see 'countless' question about lost opened session, because of the issue above along with crash etc.

Is this a bug or a known feature?

I've never had this problem before, even though I've been using Firefox for 4 years. As soon as I try to connect to an account via Google, or go to Docs/Drive/Classroom, I'm always taken to a “Clear cache and delete cookies” page. So I followed the instructions on the page, deleted all my data and saved cookies from Firefox and even tried to reinstall Firefox completely, but nothing changed, I'm always redirected to this page.

Someone can help me please? I can provide more informations if needed.

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

When I sync my Firefox account, my old data, themes, and add-ons come back. There are add-ons, themes, passwords, and usernames from 3-4 years ago that I no longer use. How can I reset my sync data and sync again? In short, there is an 'overwrite' situation; the old data remains while the new data is synced over it.

The Firefox Sync system is really neat for keeping our booksmarks synced across devices, but what I would also love to see is the option to sync all settings as well, including the changes made in the "about:config" settings.

Across my years of browsing I changed quite a lot of small little things and having to track all of those down every time I set up a new device or reinstall windows can get a bit tedious, so I was wondering if those settings can also be included in the Sync settings somehow - or if such a feature might be planned for the future?

Dear sir

I very much respect you and your app If you have banded my account or my comment due to some mistake of mine. So I apologize to you for that mistake. Now you can Unban my Account Or you can also send me a reply I will be forever grateful to you

Watsapp number [edited] Instagram ID [edited] Facebook ID [edited] Thank you for accepting my message or Feedback

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.

Hello, I've got a bit of an issue with Sync. So, my current sync profile is outdated by ages, and I'd like to delete it completely and update it with all of the information on my desktop browser. But, when I try to enable sync on my desktop it overwrites my desktop profile with all of the outdated information saved on Sync. I can't seem to find anywhere to delete the saved Sync data so that I can upload a new copy.

I hope someone can help, thank you!

Hello,

I reinstalled Windows and Firefox at the same time, and as usual, I tried to sync my Firefox account. However, I can log in, but I get automatically logged out. I've tried several times, but I can't stay logged in to sync. Do you have any ideas? I'm using Windows 11 (10.0.26100) and Firefox 131.0.3 (64-bit).

Thank you very much!

Sam

Hello, FireFox community!

I use FireFox on desktop at home, at work and on mobile.

Recently I made an account at home.

When I log in to my account at work and sync which bookmarks (and settings) will last?

Which is the primary device?

Will my work bookmarks be replaced by these from home PC or will be supplemented?

I will appreciate your help!

Best wishes!