Firefox Community Forum

Hi Moz Support,

I've had this happen several times before, but this time it really annoyed me.

I sent tabs from one Firefox instance to another on another device. I closed these tabs on the source device. These tabs were quite old this time, I'd not opened them in a while - this becomes important later.

On the destination device, let's call it "madbilly's destination Firefox", these tabs didn't arrive. After doing a couple of tests where I sent a tab from my mobile to this instance, I realised that this was a similar problem to what I'd had before, which is one where a Firefox instance/profile for some reasons "resets" itself and it seems to create a new instance in Firefox Sync. Tabs which have previously been sent to "madbilly's destination Firefox" don't arrive, because (I think) it's not registered in Firefox Sync as the same instance. These sent tabs, if closed on the source instance (which I did) are lost, unless one reopens the source instance and Ctrl-Shift+T reopens closed tabs. Unfortunately, in this case because the tabs were old and I hadn't opened them for a while there was no way to do this, because Firefox doesn't remember closed tabs which are not stored in memory (another bug, any fix?), except for looking in old session store backups which I'm going to do after I write this post, though I don't know if that will work.

Also, on Android, because it only remembers 10 closed tabs it's not really feasible to retrieve lost sent tabs this way either, and as there's no access to the session store backups the tabs are definitely lost.

Oddly, when this happens "madbilly's destination Firefox" usually appears twice in the send-tab-to menu, but in this case it didn't. To be able to send to this instance I had to sign out of Firefox sync on this instance and sign in again. Then the same instance appeared twice in the sync menu, the old one being now unreachable.

I'd like to know: 1. Why does this happen? 2. How to avoid it happening? 3. Is there a bug registered about this? 4. When will it be fixed and prevented from happening again.

I generally find that this happens when a Firefox instance isn't shut down properly, which on my old desktop I put down to it running out of resources, but on this shiny new laptop from work that doesn't make sense.

All help much appreciated thanks :)

I'm still using the old browser because the new browser, the one before that popped up today, doesn't work well on my old desktop computer. New one today requested to move passwords from cvs file and bookmarks from an html file. When I tried to search for these things my computer couldn't find them. But when I went back to the old browser, all bookmarks passwords are there.

Why is Firefox asking me to perform these functions anyway? There is no explanation as to what this is. Is programming at Mozilla really gone downhill so quickly that they forgot how to make their service user friendly?

this is my back-up laptop, which until recently synced perfectly with the main one. now all bookmarks are missing, and I cannot understand what is happening the background.

With Firefox Android on my tablet, bookmarks are not syncing that i see when logged into my Firefox account on other devices. I tried logging out and in to my Firefox accont and also unchecking and checking the "sync bookmarks" box. Firefox Android says "bookmarks are now synced". But they aren't!

Firefox desktop saved logins not appearing on android. Sync enabled on both devices yesterday. Previously worked fine, kinda frustrating having to manually re enter everything.

I am using the same account (my school email), and everything else sync successfully.

Tab groups saved on my Windows PC didn't show up on my Macbook; tab groups saved on my Macbook didn't show up on my Win PC. Is this a feature or bug?

After reinstalling my computer system, I logged into my Firefox account again, but the data synchronization failed. All my previous data is gone, including bookmarks, passwords, and widgets. What happened? I can't find them in the mobile app either.

I opened up Firefox for the first time in a while on this newer laptop, and all of my bookmarks are missing. I recently opened Firefox on my work desktop, and they were all there.

Any help would be appreciated!

I have finished my setup. But it keeps saying "finish setup" in the upper right corner of the browser. I have completed all the steps. I want to sync this desktop to my mozilla account. What do I do?

I have 2 PCs and one has all my current settings and the other does not. I recently had to re-install Windows 10 and when I installed Firefox again the settings won't sync. Bookmarks, toolbars, etc.

You need to enable me to sync the desktop to my mobile phone. I've had mozilla firefox on my Mac and android phone for years but now I am expected to work out how to create a back up and then delete all of my data and trust it will upload to the new browser on my desktop -- which before the update held the same data. Really unimpressed. Get it sorted.

I have many computers that I put Firefox on, and had no problem getting my bookmarks on them as long as I sign in to my account. However, I just had my desktop redone (that previously had Firefox) and now, after I have downloaded Firefox, I cant get my bookmarks when I attempt to do the syncing. Please help

I cannot log into my account and synchronize my data, logins and passwords. I downloaded the latest version of the browser on the official website. Below I will send screenshots proving that there are no buttons or anything that would indicate at least the slightest login to your account. BUT YOU'RE SHOVING YOUR ****** AI BOT EVERYWHERE.

Moderator note: "Edited for language"