Diễn đàn hỗ trợ Firefox

I'm trying to get my wife's firefox browsers synced - mainly her laptop and phone. I've got the phone signed in and working fine, but on her laptop there's no option to sign in and the sync option is missing from the settings menu?

It seems to be profile related as if I create a new blank profile the option is there - but if I copy all the data from her original profile the option goes missing again. Short of manually copying all her data over, I'm a bit stuck for what to do next - any ideas?

I've tried disabling any addons, restarting in troubleshooting mode etc. I've also looked at all the other solutions I can find from here (mostly related to group policies, there's nothing enabled on this) and everything seems as it should be.

I haven't tried reinstalling, but it seems like this is a profile issue rather than an installation issue?

It's a Win 11 laptop (upgraded from W10 if that makes a difference), FF version is 135.0 64 bit.

Thanks!

I installed firefox on other PC and I logged in with my account. Despite having synchronization for passwords, bookmarks, etc., I can't sync my data on my new PC. Why is that?

I sync tabs with multiple devices, but I cannot get my tabs to sync with my iPad. I have tried scanning the QR code from my desktop browser. I have tried entering the password. The process never finishes on the iPad, even after the desktop browser said the process was complete.

Hi, I switched to a new phone recently, and wasn't able to outright sync all of my open tabs from the old device. It was, however letting me access them from the tab menu on my new device, so it wasn't a big deal.

Now I can't see the other phone in the tab menu, just the sync from my PC. I don't have the old phone anymore, because it was a trade in for my current device.

Is there any way to get my old tabs back? The sync must have timed out, because there was no activity for a period of time. I have Firefox synced on all of my devices.

Thank you.

Hi, I'm new to asking the Firefox community a question, but I hope you can give me directions to solve my problem:

I currently have Firefox v. 78.15.0esr on an iMac (early 2008) running OS 10.9.5.

I know that version has been unsupported by Mozilla for a few years, but I still want to keep this computer alive after I install the latest Firefox version to the newer (refurbished) iMac M3 2023 which should come with OS 14 or OS 15.

I hope that downloading the latest Firefox for Mac version off your website should be pretty straightforward, but what I really need help on is how to bring my Profile residing in the Library/Caches/Firefox folder on my older iMac to become my Profile on the latest Firefox version on the newer iMac (while still keeping my older iMac).

Appreciate the help.

So recently I had reinstalled windows and reformated all my drives, I am also sure that this account is my only firefox account. But when i checked the sync data it shows only 1 sync data which is today 14/3/2025. I am also sure that I had left all my sync data as default therefore it should have automatically sync. But currently I do not have access to my bookmarks, etc

Dear Support,

I have two laptops - both identical accounts signed in and would like to sync them so that when I open Firefox on laptop 2 it will show me Firefox on laptop 1. and if laptop 2 was last used, then when open laptop 1, it shows me Firefox on laptop 2.

currently it is separate and unique instances.

how do i automate the sync?

thanks, Nicholas

I can't get open tabs to sync from my other computer. Bookmarks synced and other info but I don't see anything about tabs from other devices. I've synced both ends, both are logged in and I've selected open tabs in both. Nothing,

win10 last FireFox, how migrate all open tabs from one computer to another I cant find clear instruction or video, all they are old and mention about menu part which my vercion does not have.

Since Mozilla no longer supports Lockwise, I am trying to sync my iPhone to my laptop to get all my passwords. INstructions tell me "Sync Firefox on your phone or tablet 1. Open Firefox on your mobile device. 2. Go to the menu ( on iOS or on Android) and tap Sync and save data 3. Tap Ready to Scan and hold your phone over this code" First of all, this choice does not exist in the iPhone Firefox menu. If I go into "Settings" and press "Sync now" none of my passwords show up within Firefox. Please help. Thank you.

I have profiles on desktop , i had enabled sync in all profiles when the feature was first introduced. the account icon always showed that it is syncing , but in the sync tab , no visited tab list appears of any profile in both the desktop .,, i installed firefox on the android today to check synchronization but its tabs never show in desktop profile and the android tells last synchronization never....neither the desktop tabs appear in android history

I had to reset my computer. Then when tried to sync my mozilla data. Maybe because I had to change my password due it was in my computer's passwords key (I didn't memorize it, my bad). I'm worry because I'm a ebay's seller and all the bookmarks are so important for my store due there are info of my items future sales. So I'm so sad and desperate. I'll GREATLY appreciate your help, please. Thank you so much for time.

I have used Firefox bookmarks via sync for 20 years!! My previous computer is bricked and cannot be accessed. I have a fancy sync code but when I download Firefox on my phone or new computer, it’s like I’m a first time user. It offers me a new sync code but won’t allow me to use what I have. Are my files recoverable? Can I wipe from my old machine too?