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I installed Firefox and Firefox Beta on my Samsung Galaxy Tab S10 Ultra tablet. It will not let me log into my Firefox account. When I try scanning the QR Code from Firefox on my Windows Device, it scans the QR Code, but nothing happens. If I click log in with "email" nothing happens. I am signed in on my Windows Computer no problem, but Android will not let me on my Tablet, but let me log in on my Samsung Z Fold 7 Android phone. My Tablet is running Android 16 with Samsung UI 8.5, everything is up to date.

In the previous version, whenever I clicked sync, my browsing history was updated automatically. Why is this no longer working after the recent update?

I always use Firefox on my 2 devices (PC & laptop) and keep them synced. However, after the latest Firefox update, the sync feature stopped working. My Firefox history from the past two days/yesterday on my PC has not been synced or imported to my laptop

I purchased a new Apple laptop, a MacBook Neo, & need to import bookmarks from my old MacBookAir to the Neo. No success thus far after going to Mozilla article "Sync bookmarks...." & following those instructions.

I'm not sure how long this has been happening (maybe at least a month), but my browsing history isn't syncing properly between my desktop and phone. Previously, my desktop history was syncing to my phone, but not vice-versa. Bookmarks, passwords and tabs are syncing perfectly fine. I've tried enabling/disabling sync settings and signing out and in again and now my phone history is syncing to my desktop, but my desktop history has stopped syncing to my phone. While having the full browsing history on my desktop is preferable, it would be ideal for it to show up on both my desktop and phone.

Issue description

Firefox keep self logging me out from the synchronization. This requires urgent fixing.

Expected result after fixing

Firefox should never (unconditionally) self logout the user from any devices and services (with includes synchronization

Proposed enchancement

Firefox should allow to be simously logged into services (like sync) from multiple authorized devices in same time, instead beeing selective

Can't get firefox mobile to snyc with firefox for windows. Hit sync on both devices multiple times. Also signed out abd back in on both devices to force a resync also syncable items on Android are greyed out please help.

I moved bookmarks from old mac to new mac so I can visit all my websites. However no user names and passwords load on the new mac. I hit sync over and over and nothing happens. Thx in advance for your help.

I have toolbar bookmarks on PC with windows 11, firefox 155.0 (64-bit). and I have android phone, Samsung S26 Ultra with firefox, logged in with the same user. However, on mobile I could see a synced bookmarks which are removed long back from the desktop. I have tried to clear cache and data and re-login on mobile device firefox, still it shows the old bookmarks which were existing few weeks back. please advise

HI All Recently purchased a laptop and want to have FF sync with my desk top. I am signed in to both devices with the same account and have checked all settings on both and they are identical. Why are they not syncing?

Closing remote tab on smartphone closes immediately this tab on desktop. But opposite way stopped to work since some update: Remote tab closed on desktop still appear on smartphone. Not any action, notification on smartphone as it used to be. Fresh install Firefox for Android, updated Firefox on PC (Windows11).

I just went to look up a recipe in my Recipes collection. There are no collections on my Home page. I checked Moz support and verified they should be there. This is a new phone and the first time I tried looking for a recipe. I tried to test-save a page to a collection. The dialogue box came up with "Collection 1" in it. Clearly my collections are gone from this install. I just checked my old phone and they're there. It's the same account because the email address is the same and my profile pic is the same. How do I force the collections to re-appear on my home page? Samsung Galaxy, Firefox 155 First image is now Second image is old phone. Btw, I've been Mozilla since the late '90s! Never had an issue like this before.

С недавних пор, перестала работать синхронизация на Android 15. При попытке входа в аккаунт, с QR-code или по e-mail висит пустое окно. При переустановке Mozilla ничего не изменилось. Вход в аккаунт не выполнен.

When I try to pair my Firefox app on smartphone to my laptop with firefox.com/pair, I follow the steps and when entering the authentication code and going back to the app, I get a generic error saying the pairing failed.

Good afternoon.

Account synchronisation has stopped working. If I open the browser on my mobile device without using a VPN, the browser says I’m not logged in. However, if I open the browser via a VPN, everything loads correctly. Could this be because I live in Russia? I’m using the latest version of Firefox from Google Play on my device.

I was in the middle of setting up a secondary profile with sync when the browser froze and became unresponsive for a few minutes. I killed the task and reopened the profile, it lacked the theme color I'd chosen and sync was not enabled. When trying to enable sync, I got the error message shown in the screenshot. To be clear, the profile it's asking me to switch to 'is' the profile I'm in. I've tried deleting the profile and the associated files from About:Profiles, but this issue persists.

I've also followed the steps contained in this issue and associated issues, but the profileID already matches: https://support.mozilla.org/en-US/questions/1581151

How can I resolve this so that I can sync this profile?

I have been trying to sync my phone and laptop. Every time I try it only shows my laptop under "my devices" even though I have logged out and logged back in on my phone through the qr code. I am not sure what to do.