Φόρουμ κοινότητας «Firefox»

Sync is corrupting my bookmarks.

This is affecting Firefox on multiple Windows computers, and multiple Apple devices (phone and tablets).

Only partial data is available. The bookmark “tree” structure is complete, but the bookmarks are only partially populated (only about 15%, and it appears these are newer items).

I did not change/edit any bookmarks or Firefox settings. This did not occur after a Firefox or OS update (it has simultaneously affected Windows 11, Windows 10, iOS 26.2.1, and iPadOS 26.2.1 devices, Firefox 147.0.2 on the PCs, iOS 147.2.1).

One one computer I momentarily saw all the bookmarks (machine version) disappear as Firefox synced the corrupted version to that computer.

I know I can restore the bookmarks (at least temporarily, until Sync may re-corrupt them). What is causing sync to change MY information?

i recently switched to zorin os from windows 11 and i noticed my firefox data was gone (despite being signed in + syncing my passwords) could it be my wifi? an unrecognized device? its the same laptop + network so idk what

My bookmarks bar, etc have will not synced with my Firefox even though I ran "sync" several times. I haven't used this laptop in quite awhile, so I had to log in and sync. Also in my themes, a certain creator "MaDonna" has error messages on all of them" Cabin in the Mountains (and all others by her) by MaDonna could not be verified for use in Firefox and has been disabled." In my extensions page, I get the same error message. I am beyond frustrated, I'm also very computer literate, but this mess has me baffled and frustrated :(

I have a Windows Surface Pro 8 and when I set it up, I had no issues with the Syncing or Add ons/Themes/Extensions, everything synced just fine. I have Theme categories set up, and that's not even on the Themes page. I have logged into all of my Firefox/Mozilla accounts. Can anyone help?

In the past I have had several computers synced together to keep bookmarks the same on each computer. Now I sometimes get the bookmarks but the links on the bookmarks are all changed to other sites. Everything is scrambled. How do I get a couple of my computers all syncing to other computers.

Is there some way to open all tabs on a synced device. I have the list of tabs showing in the sidebar. However, the instruction: "While viewing synced tabs in Sidebar, right clicking on device name allows you to open all tabs from a device at once." does not work. Right clicking does nothing. Version 147.0.2 (64-bit) in Windows 11. Thank you.

Здравствуйте, проблема с восстановлением моих закладок. Дело в том что я продал свой пк и купил новый. И когда установил браузер. Вошел!! В свой аккаунт где были сохранены вск мои пароли и заметки просто исчезли. Я не знаю что делать. Доступа к старому пк у меня нет. Я не понимаю почему браузер не хочет восстанавливать мои закладки и все сохраненные сайты.

I have Firefox reinstalled, it is not syncing bookmarks, history. I tried to import booksmarks from edge but it could not find the file or said it does not have any bookmakrs on it which was not true.

Dear Support,

Since ages ago I've always logged into Firefox and turned on sync so whichever device I was on (or if I have formatted my PC) I would still have acces to my browser history, tabs etc. Today I've formatted my PC to switch from win 10 to win 11 and logged into firefox as usual, but after trying to Sync nothing happens. My tabs, my history, everything is empty for some reason and I cannot find my original device (the one from a few hours ago connected in win 10) in my connected devices list either.

Please help me, my whole life is in that sync :(

Best Regards, Peter

i have opened my account on firefox and it has a very old version of my bookmarks, i have logged in to the same account on both computers and it isn't showing up on the new one

Hello Mozilla Support Team,

I am experiencing a critical Firefox Sync issue and would like to request your assistance.

I recently installed Firefox on a new Windows system and signed in using the same Firefox Account that I have used for a long time. Although my account shows recent activity (last connection around mid-February), none of my synced data has been restored on the new installation.

The missing data includes:

Saved passwords (logins)

Bookmarks

Firefox preferences/settings

I have carefully checked the Sync logs (about), and they indicate that collections for passwords, bookmarks, history, and preferences do exist on the Sync server. However, the new profile does not download or apply these records, and Sync appears to treat the new local profile as authoritative.

I suspect that repeated sign-ins and sync attempts from a fresh profile may have caused my previous data to be overwritten or made inaccessible, even though the server still reports existing collections.

Given the importance of this data, I would like to ask:

Is it possible to restore my Firefox Sync data (passwords, bookmarks, and preferences) from a snapshot or server-side state from approximately 20 days ago?

Is there any way to force a full restore from the server instead of uploading the empty local profile?

Are server-side backups or recovery options available in cases like this?

I fully understand that Firefox Sync uses end-to-end encryption, but since the data was previously accessible under the same account, I am hoping there may still be a recovery option.

Please let me know if you need any additional information, logs, or identifiers from my account or device to investigate further.

Thank you very much for your time and support.

Kind regards, [edited email from public community support forum]

Hi.

I had to install a new OS disk. So, I created an account, and made a synchronization. Then, I made a security backup. When I installed the SO and Firefox, I logged in to sync. As soon as I logged, it automatically started to sync the random tiles it had after install. So, I had to use the places.sqlite and favicon.sqlite files. It got me half the tiles, and even those were misplaced. So, I had to go for the security html, and I finally got everything I wanted. But, now it says the account is not associated. If I login to associate it, when I shut down the PC, it returns to those half tiles, and out of order.

How can I get this right?

I have changed operating systems from windows to linux mint. I made sure to sync my profile before uninstalling, but now the profile looks to be empty. there are no saved passwords or bookmarks. This worked when I changed between different windows devices last year, but this time it seems stuck. I will check on a windows device when able, but in the meantime, are there any other ways to troubleshoot this?

Hello, I just completed a wipe of my whole device, beforehand I obviously signed up and synced up my Firefox account to keep my boomarks and data. After reinstalling Firefox I managed to sign in, sync up and get my bookmarks back - great. However after reopening of the app they were gone again and when checking back-ups the only available one was from after the "automatic wipe". I quickly checked my mobile Firefox app as well - it still showed a bigger of number of bookmarks so I had hoped they stayed at least there but after entering the folder they appeared empty and then gone completely after re-entering. Please if possible assist, it seems like Firefox decided to overwrite this data so maybe it's still somehow recoverable as these bookmarks have been collected over the years. Thank you in advance.

Hello community, I have many history items from forms that I want delete, I can delete formhistory.sqlite from Firefox profile in AppData, but after while all unwanted items are back downloaded from Firefox Account (cloud). Is it possible somehow delete those file in Firefox Account too?

I got a new tablet and synced my Fire fox but did it from the new device so it removed all my pinned shortcuts from my other computers. How can I recover my shortcut settings? What is the correct way to sync other devices to the one you have as the main one?

Hi, I have more than one password for Firefox. One is noted for making changes in thebrowser and use benefits that come with the broswer like the security feature that was called Mozilla Monitor that i understand in now discontinued.

The other password is noted for "just signing in." I called it the "Primary" password.

I don't know the difference anymore.

Also i am trying to sync my passwords to my old firefox. The updates were crashing my computer (Mac 11.7.10) so i dragged the app from the apps folder into the trash. Then i used Chrome to download the Firefox 115 ESR (which for some reason is labeled 140, why???) but now i can't find my passwords from the one i trashed. I am trying to synch the passwords from my other (newer) computer but it doesn't work. Do i need to sign in with the other password? Do i need to quit Firefox for the sync to take? Do i need to reboot the computer?

KR

I use an iMac (2019) and MacBook (2015) but my tabs aren't syncing between the two.

I've refreshed the syncing a few times but the MacBook is still showing two lots of tabs for the iMac, and both of them are showing pages that are no longer open.

I'd really like to be able to move between the two so if anyone has any suggestions on how to get FireFox to sync, I'd be really grateful. :-)

Afternoon,

I've used this account for a long time and today I had to reset my PC.

I was always signed into to Firefox to manage my bookmarks/passwords/history, however I've signed in now and everything is gone.

It won't sync up. I've tried removing the profile folders, copying them out, uninstalling/reinstalling firefox but nothing is working.

I tried to disable Windows defender, but that didn't do anything either.

The version I had at the time was Mozilla Firefox (x64 en-GB) Mozilla 147.0 which is the same version.

Is there anything that can be looked at, to see what has happened to the data I has?