Firefox Community Forum

Download FF install sign-in > said success then show warning

``` Are you sure you want to sign in to sync?

A different user was previously signed in to sync on this computer. Signing in will merge this browser’s bookmarks, passwords and other settings with xxxx@gmail.com ````

Press continue, the pop-up still appear and the sign-in was false positive.

FF version : 156.0 (64-bit)

Hello,

I have been facing an issue that I want to completely delete all of the bookmarks associated with Mozilla Firefox. Manually deleting them works temporarily, however, they return to the bookmarks bar upon reinstalling Firefox and logging on to my account

I have already tried deleting my Mozilla account completely and used RevoUninstaller to delete all and any Firefox files from my system (done this to one of my computers). Still, the bookmarks return when I reinstall Firefox and log in to my account. I have also tried not syncing with other browsers, and the bookmarks still return when I log in to the Firefox account.

This persistence is annoying, because I really would like my bookmarks data from Firefox to be completely wiped out, but it seems that they are returning even upon account deletion (I created a new account using the same old e-mail).

Could someone please help me with this issue?

Hello,

For some reason, when I try to sync all my stuff from my desktop Win 11 firefox/duckduckgo system, to my new Win 11 laptop, the only option I can get is to sync with a mobile device.

I had no trouble doing this some months ago with another laptop, but this time I cannot find how to do this after trying for over an hour . . . . . .

Has anything been changed that won't allow syncing with another 'big' device, please?

Today, 17Sept2026 I want to synchronize my bookmarks, extension and profile data to a new Laptop. From Profiles I see more than one default backup. Says Sync not working for my version of Firefox for one help page, but Syc is ON from Account and Syc. Everything went automatically on old Laptop. Give procedure or page to do this on new machine. From this PC I see multiple "Default" profiles. Which to use? Or does this happen automatically if both machines are on? The latest is Today, updating every few seconds

Hello,

I discovered that my android application was no more synced. I follow the procedure until Firefox must normally send me a code to my email address. The address indicated is correct but i never get this code. I try this 2 or 3 times before contacting you. Could you help me and verify if this process is well working ?

Regards

Dear Sir I had Firefox on my Sony mobile phone for quite long years, I deleted it by mistake today, how can I get it back. My Sony mobile phone is Android 7 . I tried to recover it from my computer and I got QR CODE I took a picture then do not know how to do after that. Can you please help. Thank you. Louise.

Why is it when I'm not signed in to my Firefox accounts on both my laptop computers or syncing is turned off, do my Icons change from say Facebook icon to world Globe Icon (Default).

Computer 1 has Facebook Icon(Water Landscape) Computer 2 has the World Globe for Facebook Icon. (M&M Candy)

When I delete World Globe Icon on #2 and replace it with Facebook Icon, it switches my Icon on #1 to the World Globe Icon. Also, it changes the alignment of my Icons on my desktop as well, rearranges them, put it in a different spots. This has never happened before for over 8 years, now all of a sudden, here we go and I am not sure how to stop this.

I logged into firefox on new computer and synched but none of my bookmarks or passwords showed up -- what can I do to restore? Can I import them from iphone? Note that my old computer doesn't work, so I can't import files from it yet.

Hello,

1. sync
2. widgets

Unfortunately, not all settings are synchronised when I sync my settings through my connected Firefox/Mozilla account.

For example, the following `about:config` preference is not saved:

`browser.newtabpage.activity-stream.widgets.system.enabled = true`

In addition, several settings from the regular Settings menu are not synchronised either, including:

- Start page settings - The custom ordering of search engines under **Search** - The option to NOT save payment methods & addresses - The option to NOT automatically trust installed certificates - secure DNS over HTTPS (DoH) activated with provider & fallback behaviour set

This is frustrating because I have to go through all the settings again after syncing. In some cases, the behaviour also seems inconsistent—for example, the checkbox for automatically trusting installed certificates does not always retain its selected state (sometimes it is unchecked[desired] and on other occasions it is checked).

Could you please investigate whether these settings are intended to be synchronised and, if so, why they are not being saved?

A reliable sync feature should reproduce the desired configuration consistently, including all stable settings—or, at a minimum, clearly document which settings are excluded from synchronisation.

Best wishes, RaphiQ

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.

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.