Diễn đàn hỗ trợ Firefox

I cleaned the AppData folder to speed up the computer, then it turned out that there were Mozilla files, which threw away all my data form browser. I synced the browser data on the phone, but it didn't transfer everything (history and login data missing). What to do to have my passwords again on the computer?

I was creating a primary password and for some reason it "glitched" or "stuttered" and it created the password without me knowing what it was. I tried several combinations that could be close to the one I was inputting. Can I uninsall Firefox and reset the password?

Hi

Lets say i have 100 tabs open in my session. I mistakenly open a new window with one tab. After closing this window and starting firefox again, it starts with this one tab, so i have lost all my previously opened tabs. Is there a way to get those back?

Thank you very much. Dimitris

Yesterday I synced Firefox desktop to iPhone 13 and iPad 11. I created an account. The syncing worked.

Today I tried to access one specific website and got this message: "500 server error. Oops. Sorry. Your request could not be carried out because of an error. Please log out and sign in again". That didn't work.

I tried accessing other websites within Firefox desktop Version # 140.04 64 bit. They do work.

I don't know if this service error is something within Firefox or within Windows 10 latest update, or something else. I've reviewed system Administrative Events and there are numerous notes for 7/18/25. Many say "Distributed COM" some are Service control manager, many entries "Device setup manager". I have photos of several screens.

I've deleted cache and history (I use private Mozilla). I've restarted the laptop PC twice. No change to that website access. I used troubleshooting and that didn't help at all.

Please help diagnose where the problem is and how to fix it if the source is my computer. If it's a server problem please advise. Thank you. JHL

From: cartwrm@talktalk.net <cartwrm@talktalk.net> Sent: Friday, July 18, 2025 2:14 PM To: no-reply@mozilla.org <no-reply@mozilla.org> Subject: Re: Bradforth posted an answer to your question "Ive lost mybookmarks on the left side of the screen"

It's really strange (I'm still trying to understand my relatively new Windows 11 laptop), bookmarks have been where I'd expect them for a few days, then this morning, it's as if Firefox has done some sort of clean/re-arrangement. The bookmarks had disappeared and there wasn't my usual array of sites available along the top. Then by clicking on a few things on the right (Firefox) 'most used' re-appeared, then later the toolbar is there on the right, I'd really like it back on the left And also I'd love to know whether I might have done something unconsciously which caused this.

Mike

When I access eBay using Firefox I cannot access the choices on screen so unless there are no choices I cannot buy anything. I have tried Google Chrome which workd but I prefer to use Firefox and I would like someone to investgate this problem which has arisen with the last two Windows 11 uodates.

www.biharcommercialtax.gov.in not excess. show every time when we login sho this web site not secure.

When I open Firefox, the master pw window opens with data showing. I can x out of the window & continue. So my data is exposed to anyone who hacks into my desktop PC. WIN 11 64-bit. Please help.

See the image below, how do I prevent that black box showing up and showing anyone who uses my device my sensitive data? How is this not a common setting to be changed?

Very insecure and Horrible to have on by default. Recently switched to firefox from chrome because of security concerns but stuff like this is making me want to go back, because HOW IS THIS SAFE AND SECURE?!?!?!?

I've typed in passwords in boxes that arent really password boxes, and firefox has suggested my own password in plain sight like in the image below.

Strongly recommend firefox to not make this default and make it an accessible setting to disable because I've leaked my sensitive information to online calls because of this. This urgently needs to be addressed as a security concern. At least have a cogwheel button next to the black box to quickly disable this setting. Very very disappointed.

Literally every single extensions I try to download says Installation aborted because the add-on appears to be corrupt. I don't know why because I just downloaded firefox.

For the past several days, I can no longer access my two hotmail.com email pages. I keep getting the message to "check back later." I tried using Edge, and it worked there. Then I tried using DuckDuckGo and Brave, and hotmail worked on both. So, this problem only exists when using FireFox which is the site I use by default.

I wanted to open www.wattpad.com ,but firefox is not reaching the web i request u to resolve this problem as soon as possible