Firefox Community Forum

Good day,

Firefox Synchronization restores my old data as soon as I sign in, even though I do not push synchronization.

I have absolutely no power to decide what gets restored. I do not see any possibility to update the data stored on my Firefox profile online.

But the oddest behavior is that I opened a new account from another PC in order to save my actual Firefox data. I then synchronized my data from the first PC with the new account, and this time, instead of overwriting my local data from my new account, it is the data from the new account that got overwritten from my local profile containing the old data.

To sum up things, it seems that:

- I cannot choose what gets saved or restored neither on my PC locally nor on my Firefox profile online.

- When I synchronize Firefox, my data gets randomly overwritten either on my PC locally or on my profile online, without giving me the choice to either backup or restore these data.

Is there any way to avoid this ? And how do I choose if synchronization overwrite my local profile from my online one or the other way round ?

Yesterday, something went wrong in my Windows 11 desktop (I have a virus program installed). One of the casualties involved corrupting Firefox (it would not open). I reinstalled Firefox without removing the old version. Now I have a new installation but all my bookmarks and other data are missing. There is a folder on my desktop labelled as "Old Firefox data". It is possible to restore Firefox to a previous time (a day ago)? Thank you.

Hello Mozilla Support, I enabled Settings → General→ Open previous windows and tabs, but after restarting Firefox all of my tabs were unexpectedly lost. I’ve confirmed the setting is still enabled, restarted Firefox and PC and checked History → Recently Closed tab with no luck. Why wasn’t my session restored? How can I recover my lost tabs? How do I ensure Firefox reliably restores my tabs going forward?

All of my desktop bookmarks are on mobile, but after resetting my password they won't sync back to my desktop. I can't even access them from my desktop, despite browsing data still being clearly accessible. I have 10 years of bookmarks on my mobile device that for whatever reason now will not transfer to my desktop firefox no matter what I try. Since there's no way to manually export to xml on mobile I have no way of accessing these and I am at risk of losing 10 years of bookmarks, many of which are vital to the work I do.

I'm taking nightly incremental backups of /home for example to my home storage server and, I guess, due to the databases Firefox uses for various storage, those can't be backed up by just copying them, if Firefox is running and has the database open.

What are the best practices, then, for ensuring all profile data, including these databases, is in a state where it can be backed up, while Firefox is running, in a way it can be restored to a fully functioning profile?

For example, with MySQL databases, you can dump the log before running the backup each night, which basically exports the SQL statements needed so you can skip backing up the actual binary database file (like ibdata1).  Does SQLite need something similar?  and is this the only special consideration that is needed, or are there other specialized types of data within our profile directories that can't be backed up by simply copying the data while Firefox is running?

Thanks

How could i restore the bookmarks that i mistakenly deleted? Going back to the sync from 2 weeks ago, I don't have any of my bookmarks at all, I don't have them locally saved, the deletion happened before I reinstalled the operating system

Hi, I want to sync firefox. between my mac book pro and mac air. THe instructions I find on the web don't work. I don't see a sync and save date choice in my menu

They show how to sync between a laptop and a phone. Thanks, Bill

I am trying to sync Firefox data to new computer. The Mozilla account only allows me to sync mobile devices. Online instructions do no match my version of Firefox 131.0.2, Ubuntu 24.04.

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 Facebook Support Team,

I hope this message finds you well. I am reaching out to request your assistance in recovering a Facebook business account that was accidentally deleted. The account was crucial for our business, HPIT, and we regret having lost access to it.

We have already created a new account, but we would greatly appreciate it if you could help us retrieve the previous account and its associated data. If possible, we would like to link the recovered account with our new one to ensure continuity for our business operations.

I have included the link to the deleted account below for your reference:

https://www.facebook.com hpitcorp

Your assistance in this matter would be immensely valuable to us. Please let us know if there are any steps we need to follow or additional information you require from our side to facilitate this process.

Thank you very much for your support and understanding.

Best regards,

John Ezekiel

Current Account Username: j [edited from public] @gmail.com <- access to Facebook account

Business Account

Previous Account Username: [edited from public] @hpitcorp.com

Change to: [edited from public] @hpit-inc.com

I have been using Firefox for a long time. After resetting Windows 11 on my PC due to technical reasons, I signed into my Firefox account in Mozilla Firefox and noticed that my previously saved data, such as bookmarks, passwords, and other important data were not saved. How can I recover my old data?

Hello, I received an email from you asking me to change my Firefox password for account security reasons. When I changed it, all the data synced in Firefox with my email was deleted. This upset me greatly because I lost important data and saved websites. Please restore the deleted data. Thank you.

I am using duck duck go. I was backing up stored settings and accidentally re-installed google. I cannot get duck back in mozilla settings--It says duck is my default, but moz opens to google. oops and help Thank you, Elsie [edited email]

I reinstalled windows, installed firefox and signed in but my bookmarks (toolbar) have not sync'd, I have bookmarks toolbar set to always show, and my android phone has firefox installed and the bookmarks are there, they just will not sync to my pc, whats up?