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Synchronization issue between Laptop, PC, and Mobile - Bookmarks missing on mobile.

Nathan Never
Nathan Never
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Hello everyone, my name is Francesco and I have a big problem that I can't solve in any way! I just can’t seem to solve a synchronization issue between two Firefox 135.0.1 (64-bit) installations on a Laptop and a PC (both running Linux Mint 22) and a Firefox 135.0.1 (Build #2016074239) on Android. Can someone please help me? I'm desperate!

Let’s start from the beginning: For a very long time, every time I connected to the internet with Firefox on my Laptop or mobile, my bookmarks would get completely messed up: folders duplicated endlessly, some empty, others identical to the original ones. The same happened with the bookmarks themselves: separators almost all moved to the bottom and multiple duplicates of my countless bookmarks.

After several failed attempts following posts from other users who had the same or a similar problem, as well as some Firefox support how-tos, I decided to try a different approach, which was also described in a post.

First, after logging out of my account on all three devices, I backed up my bookmarks from my PC in different formats (.html, .json), and after closing Firefox, I also backed up the cookies.sqlite, favicons.sqlite, and places.sqlite files—just in case! Then, I deleted all folders and bookmarks from the other two devices.

I then spent the whole afternoon cleaning up my bookmarks on the PC: removing duplicates and redundant folders, organizing separators and bookmarks the way I wanted, and making new backups as mentioned above. After that, I logged into my account from my mobile, triggered a sync from there, then logged into the other devices and started the synchronization on them as well.

But it didn’t work. 😞

PC and Laptop synced beautifully, everything was perfect, but the mobile, despite showing that it was syncing, remained empty—and still is.

I tried several forced sync methods as suggested in some Firefox how-tos (https://support.mozilla.org/en-US/questions/1482205 and https://support.mozilla.org/en-US/kb/how-set-firefox-sync-firefox-android), and I also followed procedures from other posts where users had similar issues, but nothing worked.

I even tried different approaches: logging out and back in first with my PC, then with my mobile; replacing all bookmarks with the ones I had exported in good condition; checking if there was a new update on Google Play. But my mobile remains completely empty—no bookmarks at all.

So, after more than four hours of trial and error, I'm losing my mind 🤯, and I’m also getting seriously exhausted (it’s now 2 AM, and I’ve been up since 5 AM!).

Does anyone have an idea on how to fix this? A plugin? A folder on the mobile where I can manually place the saved files? Maybe a well-aimed hammer strike in a specific spot on the phone? Anything? At this point, even just a good joke might help me get through the frustration. 😜

Now, I just hope I can get some sleep—I’m so stressed that… 😭

Best regards to all, see you next time, and... good night!

P.S.: Sorry for the long post. 😳

Hello everyone, my name is Francesco and I have a big problem that I can't solve in any way! I just can’t seem to solve a '''synchronization issue''' between two ''Firefox 135.0.1 (64-bit)'' installations on a Laptop and a PC (both running ''Linux Mint 22'') and a ''Firefox 135.0.1 (Build #2016074239)'' on Android. Can someone please help me? I'm desperate! Let’s start from the beginning: For a very long time, every time I connected to the internet with Firefox on my Laptop or mobile, my bookmarks would get completely messed up: folders duplicated endlessly, some empty, others identical to the original ones. The same happened with the bookmarks themselves: separators almost all moved to the bottom and multiple duplicates of my countless bookmarks. After several failed attempts following posts from other users who had the same or a similar problem, as well as some Firefox support how-tos, I decided to try a different approach, which was also described in a post. First, after '''logging out''' of my account on all three devices, I '''backed up my bookmarks''' from my PC in different formats (''.html'','' .json''), and after closing Firefox, I also backed up the ''cookies.sqlite'', ''favicons.sqlite'', and ''places.sqlite'' files—just in case! Then, '''I deleted all folders and bookmarks '''from the other two devices. I then spent the whole afternoon cleaning up my bookmarks on the PC: removing duplicates and redundant folders, organizing separators and bookmarks the way I wanted, and making new backups as mentioned above. After that, I logged into my account '''from my mobile''', triggered a sync from there, then logged into the other devices and started the synchronization on them as well. But it didn’t work. 😞 PC and Laptop synced beautifully, everything was perfect, but the mobile, despite showing that it was syncing, remained empty—'''and still is'''. I tried several '''forced sync''' methods as suggested in some Firefox how-tos (https://support.mozilla.org/en-US/questions/1482205 and https://support.mozilla.org/en-US/kb/how-set-firefox-sync-firefox-android), and I also followed procedures from other posts where users had similar issues, but nothing worked. I even tried different approaches: logging out and back in first with my PC, then with my mobile; replacing all bookmarks with the ones I had exported in good condition; checking if there was a new update on Google Play. But my mobile remains completely empty—no bookmarks at all. So, after more than '''four hours''' of trial and error, I'm losing my mind 🤯, and I’m also getting seriously exhausted (it’s now 2 AM, and I’ve been up since 5 AM!). Does anyone have an idea on how to fix this? A plugin? A folder on the mobile where I can manually place the saved files? Maybe a well-aimed hammer strike in a specific spot on the phone? Anything? At this point, even just a good joke might help me get through the frustration. 😜 Now, I just hope I can get some sleep—I’m so stressed that… 😭 Best regards to all, see you next time, and... good night! P.S.: Sorry for the long post. 😳

Ausgewählte Lösung

I SOLVED IT! 🥳🎇🤩😂

HOW: I logged out of everything again, completely uninstalled Firefox—this time clearing both CACHE and DATA first—then reinstalled it, logged in only from my PC and mobile using my email and password (since the QR-Code kept giving me an error, probably because I had used it too many times), and everything was finally fixed.

I also want to add that I had already tried uninstalling it before—but forgot to mention it—but without clearing cache and data, and it didn’t work. The idea to try that only came to me when I was already in bed!!!

GOOD NIGHT EVERYONEEEEEEE! 🎉🎉🎉

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Nathan Never
Nathan Never Fragesteller
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Ausgewählte Lösung

I SOLVED IT! 🥳🎇🤩😂

HOW: I logged out of everything again, completely uninstalled Firefox—this time clearing both CACHE and DATA first—then reinstalled it, logged in only from my PC and mobile using my email and password (since the QR-Code kept giving me an error, probably because I had used it too many times), and everything was finally fixed.

I also want to add that I had already tried uninstalling it before—but forgot to mention it—but without clearing cache and data, and it didn’t work. The idea to try that only came to me when I was already in bed!!!

GOOD NIGHT EVERYONEEEEEEE! 🎉🎉🎉

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