Firefox 社群討論區

For example, say, you have 3 opened tabs in a Firefox (FF) windows. Normally, when you close FF and then re-open FF, it restores 3 previous opened tabs.

But, if you have another FF windows opened at the same time, when you close the FF windows with the 3 opened tabs and re-open back a new FF windows, FF won't restore the 3 opened tabs.

Same thing happens when you have another Private FF windows at the same time, when you close the non-Private FF with the 3 opened tabs, and then you re-open FF, it loses the 3 opened tabs.

That's why you can see 'countless' question about lost opened session, because of the issue above along with crash etc.

Is this a bug or a known feature?

Hi, I have a laptop i use for work and a PC at home, both use Firefox.

At home I am signed into a FF account, but on my work laptop i've never signed into FF before. I had lots of work-related bookmarks.

I recenlty signed into FF on my work laptop, in order to make sharing tabs to my home PC easier. Now all the local bookmarks I had in FF from before I signed in have been replaced with my bookmarks from my home PC.

How do I recover the bookmarks from before I signed in? Going forward, is there a way to organise different bookmarks on 2 different devices while signed into the same FF account?

I am signing into my Mozilla account on a new computer with a clean Firefox install. I'm able to get into my account using an authorization code to my email, but Firefox Sync isn't working so no bookmarks/passwords/history/etc. I have a persistent "account disconnected" with a yellow triangle icon. Upon clicking through, I see "Please sign in to reconnect [my email address]" with a sign in button. Signing in does nothing. What's really strange is that my other Mozilla account works fine, which leads me to believe this is an account issue—except that I've synced this account across several devices already.

What do?

Long time user of sync and now totally pissed because I have to discontinue it because I can no longer trust it. It was so useful.

Syncing between mac and windows desktops. On mac suddenly have duplicate folders appear on the bookmark toolbar. Delete the duplicate entries. Later discover that duplicates and original folders have been deleted. Problem compounds when switching to windows to find sync has very helpfully has deleted these folders there too. There was no way to disable syncing to prevent this. So that means when you do something stupid on one instance, you have no way to prevent that mistake from spreading to other computers. Nice one.

No sync-log found on mac to investigate why the folders where duplicated. so no way to file a bug.

All I can do now is disable sync on all computers. Be nice if there was some kind of roll back.

Hello,

Referring to your article [https://mzl.la/3TS8WcA] (Import settings and data into Thunderbird for Android) . The first step is : Export Thunderbird Desktop settings

   Click ≡ > Tools > Export for Mobile. 

However, I am running version 128.3.3esr (64 bits) "Nebula" and the menu "Export for Mobile" isn't available under "Tools" as mentioned in the article.

Please advise

Regards

I've never had this problem before, even though I've been using Firefox for 4 years. As soon as I try to connect to an account via Google, or go to Docs/Drive/Classroom, I'm always taken to a “Clear cache and delete cookies” page. So I followed the instructions on the page, deleted all my data and saved cookies from Firefox and even tried to reinstall Firefox completely, but nothing changed, I'm always redirected to this page.

Someone can help me please? I can provide more informations if needed.

Hi,

I have logged in in a new device with my firefox account and I can´t see anything of my backed up data.

Passwords, bookmarks, pluggins are gone... And I checked before that I had my sync on and everything was synced.

Before that, I added a secondary email and then put it as primary. Could you please check?

when attempting to move Firefox bookmarks to my new computer, I click import data within the Firefox page. The computer asks me to select the file. I have no idea where the bookmarks reside and cannot find a file. What is the procedure to get this done?

I am going round in circles. The last Firefox update reset my Firefox on my laptop to default settings including losing my master password. I started to reset all my old settings but when I got to the part where I setup the sync with my phone version of Firefox, Mozilla asked me to log in. My password was not recognised so I hit "Forgot password" having set up a new password using one of my 10 digit authentication codes, I was then asked to log in with my new password, I did this & when trying to do the sync, I am being asked for a six digit authentication code! I have no idea where to find this code. Please help.

Thanks to a Microsoft update my PC had to have Windows reinstalled causing me to lose all my apps. I have reinstalled Firefox on the PC but of course, all my bookmarks and passwords are missing. I had set up syncing between my PC and my Android mobile devices (phone and tablet). Can I restore or sync from the mobile device back to the PC? I have searched and found nothing. Even when signed into Firefox on the phone, it does not bring up "Sync" when I go to settings. I truly appreciate your help.

A while ago, my browser refused to start. Apparently it got corrupted during an update and i had to de- and re-install. That worked but i lost all bookmarks and saved passwords. Now i lost access to my email account because I cannot for the life of me remember my password. Google recovery keeps sending the recovery code to the same emailadres that i dont have access to. Other recovery stept arent working.

Is there a way for me to find the old saved passwords from before the re-install? Please, i need access because so many accounts on other websites use that email address. Please help me i dont know what to do.

I sync between both my phone and my pc, my phone is constantly up to date on my tab syncing however my pc is constantly lagging behind by a couple of weeks.

Steps taken: exited and reopened firefox clicked Sync Now button on the pc in both the sidebar and in the sync settings logged out of and back into my firefox account on my pc

I am trying to sync Firefox data to new computer. The Mozilla account only allows me to sync mobile devices. Online instructions do no match my version of Firefox 131.0.2, Ubuntu 24.04.

Hi, I accidentally did a refresh on my Firefox (Win 11) and therefore I now have an "Old Firefox Data" folder on my desktop and Firefox is completely almost back to stock.

I have lost all extensions, customizations, settings and other configurations. Luckily, I had taken a backup of my bookmarks prior to doing this.

How do I return everything (including extensions) back to pre-refresh state?

Thank you.

Good day,

Firefox Synchronization restores my old data as soon as I sign in, even though I do not push synchronization.

I have absolutely no power to decide what gets restored. I do not see any possibility to update the data stored on my Firefox profile online.

But the oddest behavior is that I opened a new account from another PC in order to save my actual Firefox data. I then synchronized my data from the first PC with the new account, and this time, instead of overwriting my local data from my new account, it is the data from the new account that got overwritten from my local profile containing the old data.

To sum up things, it seems that:

- I cannot choose what gets saved or restored neither on my PC locally nor on my Firefox profile online.

- When I synchronize Firefox, my data gets randomly overwritten either on my PC locally or on my profile online, without giving me the choice to either backup or restore these data.

Is there any way to avoid this ? And how do I choose if synchronization overwrite my local profile from my online one or the other way round ?

I am trying to get rid of old bookmarks.

I logged out of all my devices except my main PC, deleted many folders of unwanted bookmarks.

changed my password

on my other devices that were not connected to sync, I deleted all bookmarks completely.

I only wanted what was on my main PC that I worked so hard on.

now tonight on my PC all the old bookmarks are back again.

this page doesn't make any sense, there is no option to "Delete data from this device" when I sign out.

[https://support.mozilla.org/en-US/kb/delete-sync-data-firefox-signing-out...]

Dear Firefox,

I have just reinstalled my operating system after some issues. After reinstalling my browser, I logged into my browser after changing the password, but now no data is being synced. The open tabs, bookmarks and saved passwords were the most important, but none of that has synced back. After waiting for a little bit I decided to press the synchronize now button, but that also didn't do anything. Is there perhaps something wrong with the syncing right now? Or is there another way to get that data back? I didn't save it as I normally don't have to.

Thank you for your reply!

Kind regards, Lili