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Firefox Sync is not working appropriately insofar as, when I check Firefox on my Windows 11 desktop, I cannot see any tabs being synced from the Firefox app on my Android phone, even though both apps are logged into the same Firefox account and syncing open tabs is enabled on both machines.

However, when I check my phone, I can see all the tabs synced from my desktop. So, this seems to suggest that the sync process is working correctly on both desktop and mobile because I can actually see all the tabs that are open on my desktop, but I cannot see any of the tabs that are open my Android.

Everything is checked to sync on both the Windows and the Android Firefoxes.

Has anyone encountered a situation like this before, where sync is working appropriately, but one device seems to be refusing to upload specific data to the sync servers?

An error occurred during a connection to passport.moi.gov.af. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

Firefox on Android has a "Collections" option,it is convenient displaying some websites on the startup page.But "Collections" seems not to be synced.It might be more useful if add the option to Sync List. Or it can be used as a specific section of the bookmark (but displayed on the startup page), similar to the bookmarks toolbar on PC. This makes it possible to sync frequently useful websites on both mobile and PC devices. Thank you for reading this.

I mistakenly removed an important extension (LinkLocker, which I wrote, actually) from my synced work computer, not realizing it would be removed from my home laptop as well.

Unfortunately, I saved a significant amount of data in that extension's storage and, after reinstalling it, can't seem to recover it.

Is this data lost forever or is there some place I can look to find it?

I was forced to do issues with my windows to reinstall, not having the ability to backup anymore due to the errors.

So after reinstalling windows I install firefox, I log in and it doesn't sync. Searching for a solution I found one that stated, if you have a backup of your files restore those into the new firefox profile. I do that and it shows a syncing animation shortly. Nothing happens though.

I start searching for other solutions, there they state just make a new profile via about:profiles and log in. I do so and it works, it starts syncing, but the problem now is it synced what synced in that other profile. So that other profile never really synced as in it did not grab from the cloud but rather it only upped and with that I guess overwrote everything what I had there? None of my later bookmarks are there, I only have what I had as a physical backup now. Why does sync work so? Not my first fight with sync, but I never lost data like this.

Kinda wish the sync interface was user-friendlier, where I can see what is overwritten or at least that I can choose to upload or download from sync when I log in. Instead of it choosing for me to just upload...

hey team Mozilla,

i'm having a bit of an issue with Password Manager not syncing between my android mobile device and my desktop device.

on desktop, i went through hundreds of accounts. i deleted accounts. i updated password. and i changed emails associated with those accounts (this was in response to recent data breaches that led to my identity being co-opted by fraudsters).

however, none of those updates are carrying over to my Firefox android app.

to trouble shoot, i tried clearing the mobile cache, clearing the mobile data, uninstalling the mobile app, syncing my desktop app, waiting for 8 hours, syncing the desktop app again, reinstalling the mobile app, logging back in.... but for some reason, the mobile app continues to remember all of my old and out-of-date passwords.

do you have any advice?

Recently my PC has died from the hardware crash. So I've bought another PC and installed Firefox. While other browsers seem to nicely sync bookmarks and history from the previous PC, Firefox didn't do that although I have been logged into my Firefox account on both PCs and I can clearly see the other PC in devices using this account. What is the reason for that?

Hello! I have an issue where there are two entries for the same device showing up when I click "Send tab to device." I've already tried logging out on this device, and the rest of my devices, and logging back in, but there are still two entries for it. I have also verified that there is only one device under this name in accounts.firefox.com.

The following content is translated using GPT machine translation. Dear Firefox team,

I encountered a problem while using the Firefox Sync service. After registering an account with one of my email addresses, I tried to log into this account on another device, but it prompted me to register again. After following the instructions and registering, I found that both Firefox accounts are associated with the same email, but they cannot be linked together. Later, I tried using a different email address, but the same issue occurred. Finally, I attempted to log in with Google, only to discover that one of the devices does not have the option to log in with Google. I suspect this might be the reason why I cannot use Sync. The Firefox version on this device is 128.02, running on Win10.

Looking forward to your response. Wishing you a pleasant day.

So, my old computer recently broke, but I luckily recovered all my files. I was re-downloading Firefox onto this computer, but my bookmarks and add-ons and stuff won't sync. When I searched for the solution to this, I saw someone having a similar-ish problem (https://support.mozilla.org/en-US/questions/1403774#answer-1563248), but they just said they had to wait awhile for it to sync. Now, I have a couple questions that I can't seem to get the answer to:

1. How long does it take to sync my data? How long did that person have to wait?

2. What if it never syncs and that person just got lucky? Is there some sort of alternate way to fix this faster?

I'd really appreciate help on this topic, but I'm not the best with computers. If anyone has had this problem, and figured it out, please let me know! I had a lot of bookmarks and a good amount of add-ons, I really would like to not lose those.