Diễn đàn hỗ trợ Firefox

My husband was trying to fix an Outlook account that was damaged because of a power outage and in the process reset some of my accounts. I couldn't log in to Firefox so I used my email and hit reset password. In the process it said my account was new as of June 25, 2025 and I lost all my passwords saved in Firefox. This is a desktop computer with Windows 7. I have a new computer with Windows 11 and it still listed my passwords but said my account was disconnected. I don't know how to keep my passwords in that account but don't know how to access them so I don't lose the information.

I rebooted and launched FF, I was asked if I wanted to Refresh. Naturally I declined because I'm not an idiot. Now all my addons and passwords are gone. I would love to have them back since I never asked for them to be deleted. I don't have an "Old Firefox Data" or whatever folder on my desktop, would have been cool for them to leave that there when they clobbered years of data and customization because Firefox thinks they should have more control over my PC than I do, but they didn't. Is there any way to get these back?

I have just installed firefox on my new computer. I had firefox on my old computer and laptop that are both still running. It has pulled in a list of mostly obsolete accounts and passwords which are listed when I select "passwords" I did not ask firefox to do this. why has it done this. what else may it have done that I don't know about

For the 2nd time in 3 months my history and password files have disappeared from my browser. I have an Acer laptop running Windows 10 with Norton Security. I've tried a few fixes from your site with no success. Also tried a fix your site did have, but the link led nowhere. I need these passwords back. What do I do? I was in the midst of registering my wife for social security. Now my login and password are in the wind. Please get back to me Thank you

Tom [email removed]@yahoo.com

Hi I have lost all my browsing history and nothing I browse is saved. Also all my bookmarks have disappeared and I can't save anything even clicking on the star doesn't do anything I have quite a bit of stuff bookmarked, can you help? The browsing history and my bookmarks seemed to disappear at the same time.

I updated Firefox and all my plugins except for Grammarly were deleted, I saw another post talking about going into profile folder but I couldn't find anything about that

I updated firefox, and all my addons and sign ins are gone now. Search history and tabs remained intact. It also created a folder on my desktop, but I'm not sure how do I "extract" my old data from it.

I would like to be able to download YouTube videos.

Is there a Firefox add-on that will allow me to download YouTube videos onto my MacMini?

I tried Video DownloadHelper and YouTube Video Downloader and didn't see any action.

Do I need to setup settings a certain way to make it work?

What are the steps to make it work?

Thank you for your assistance.

sync from my other computer's Firefox doesn't seem to be picked up on the sync for the older computer. any help in transfer of data between the copies of Firefox would be helpful

with the new function of Tab Groups i was wondering if it is possible, or can be added in the future, to sync existing Tab Groups to all or specific devices in order to access created groups on my private Macbook to my work Windows Firefox.

thanx for any reply

Hello,

as the title suggests, I moved my whole profile folder to a new PC, and have since formated my old PC. I just noticed that the key4.db file is missing from the old profile folder. I have followed all instructions I managed to google, which ensured that it was enough to just copy over the old folder content into the new one, nowhere was it mentioned to look after if a key4 or key3 file are present. How is it possible that multiple of your support articles don't mention this? I am now stuck with only a json.login file from my old profile and no way to import my saved logins to the new PC.

Two issues! 1) When I access "FULL SCREEN", how do I get back to the normal desktop screen? 2) When Firefox crashes, it wipes out my tabs. How can I restore them?

i specificly have a firefox acount soo i can acess my bookmarks if something happens to my pc. now that it did and i had to format it, unfortunatly i forgot my password. i didnt even try any false ones couse usually you can save your Data by verifing your acount over emeil when requesting a new one. but after doing that its all gone. 10 years of bookmarks gone. how do i get back my bookmarks? i never agreed to this kind of security feature. i dont think its agood thing, and i never saved any infos that could get misused if stolen so such a feature as earasing my data is unwanted.

Hello I have both Firefox and Thunderbird My old laptop using WIN 10 is was past it's prime. I got a new one WIN 11 and want to pick up and move everything from both apps to the new laptop. PW saved docs e-mails and URLs everything and I just can't find a way to do it. Can someone please help me. I did install a new Firefox on the new PC but it won't work and the setting are not the same ( account settings and such don't match )