Diễn đàn hỗ trợ Firefox

2 days ago I had all my bookmarks perfectly in my browser and today when I opened firefox today, all my bookmarks were just gone without a trace, this never happened before at all, and even when I uninstalled firefox and reinstall it the bookmarks would still be there, how can I get them back?

When I play a video in fullscreen, there is a strange black border that appears around the video which makes the content smaller than it would otherwise be. This border does not display in Safari or Chrome, just in Firefox. It also occurs in every media player I've tested, including YouTube and Netflix.

Annoyingly, I can't get this to show up in a screenshot. It seems like Firefox guesses the aspect ratio or resolution wrong when it puts media in fullscreen, and it has the effect of downsizing the actual interactive part of the display. Meaning, I can't move my mouse into the border area to take a screenshot of it.

I'm on an ARM Macbook running MacOS 13.5, if that matters.

Is this a bug, and/or is there a way to fix this?

I'm a web developer working on an app running in Docker on my MacBook. Chrome, Edge and Safari trust the self-signed certificate that has been imported into the Mac's root certificate store and have no security issues, but when I try and access the web app, I'm hit with "Warning: Potential Security Risk Ahead" and the error code is MOZILLA_PKIX_ERROR_CA_CERT_USED_AS_END_ENTITY

I really miss Firefox, particularly the multi-account containers feature. What do I need to do so that Firefox will trust my certificate for my local web app?

Hello.

After the extended release was installed, did the 'Enhanced Tracking Protection' setting revert back to the default setting 'or' did the 'pre-selected setting' remain the same as before the update?

Hello!

So recently I made a purchase via a website with my credit card. Was a one time purchase and I want the credit card data to be deleted, but it keeps auto filling the form even after I deleted all cookies, browser history, cache and everything else. I searched forums that there is auto-fill credit card & address options but only in US and Canada and I am in Europe.

How do I delete this data stored in Firefox since it keeps auto-filling it even after I contacted the billing support to delete my information.

Thanks!

Hi I have re-installed my Windows and all data have been backed up in my Firefox account. I have a problem with history and bookmarks which are not restored in my new windows but my password restored.

while beeing on facebook most of the post i see are in french ,and i set the the language in spanish ...also on ebay,the info showed in the articles have a similar error....it shows them in french and the prices on euros,and i use dollars it happened since the last browser update....i tried both pages in Opera or Edge and they show those in spanish...no problem with them

Hello! I completely restarted my computer so it is functioning like new one. I managed to log in into my firefox account which I have used previously and had synchronized all data.

After connecting to my account there is no data after synchronisig - no history, no tabs, no passwords and accounts details.

Please let me know what is wrong.

Regards, Marcin

Hello, FireFox Updated my 17" MacBook Pro- High Sierra on July 30, 2023 successfully to 115.03. There was another update today Aug 1st 115.1esr, which said it Failed for an unknown reason. Can anyone tell me how I can find out what happened? See attached update message.

Thanks in advance for your help.

https://forum.skylords.eu/uploads/stronghold_bombardment.mp4 This file can not be played with error message "Video can't be played because the file is corrupt.", and there is not even an option to download the file. Same file works fine in Chrome, Edge, VLC media player, ...

One particular website no longer works with Firefox. https://www.familysearch.org/mapp/ I had no problems with this website until a couple of weeks ago. I can use the website with no problem on other browsers. I have tried a clean re-install of Firefox and clearing cache, but still the website does not work. Any suggestions? Thanks John

Hi.

I just checked to see if there were an update to Firefox, for my secondary laptop. But for some reason it wants to update from "Version 115.0.3 (64-bit)" to "115.1esr".

I have never used ESR in my life, so why does it want to update to ESR?

Is this expected, or is there a problem with this? It is intentional that I use my Windows 7 64-bit laptop.

I recently made a switch to Firefox and while I've been able to find solutions to all my problems, I'm struggling with this one. I use drag-and-drop to upload images really often and in my previous browser (Opera), after my images have been dropped into Discord for instance, the folder would be hidden behind the browser. Firefox does not do this however and stays focused on my folder which means I have to manually click inside Firefox to continue with my work. I was wondering if there was a way to make Firefox come back into focus after I drop images in the browser.

After updating a W10 laptop from 115 to 116 of FF the user started having problems with getting to different websites (sites they worked on/with regularly). The problem is the cert DB. The doc I found says that it is cert8.db. Actually it is now cert9.DB.

What I had to do was go to task manager and kill a task that was holding the cert9.db file. Then I could rename it (cert9.old.db). Then restarted their laptop and FF came up and started fixing the cert file (as expected). This seems to have fixed their problem.

Hi ,

I tried to activate my firefox account on my new laptop. I also tried to add this new computer to firefox sync. The system shows me, that I am logged in with both my old and new computer After entering the password I am told that firefox account will sent me an e-mail to verify the account. I am told that I will receive a code at my e-mail address. The stored e-mail address is correct. I am told that the e-mail has been sent to my e-mail address. I have tried to receive an e-mail from my old computer as well. Whatever I do even after I added accounts@firefox.com into my contacts. I still don´t receive any e-mails with verification codes or links to verify my e-mail address. I really don´t know what else to try. I did not find any support adresses for firefox in europe. Please can anybody help.

When I go into fullscreen on firefox macos, hovering near the top shows the traffic lights (fullscreen, minimize, close window buttons) and moves everything down. This may be expected behavior, but it is very annoying as when you try to open new tabs the tab bar moves out of the way of the traffic lights, and the traffic lights area is around the size of the tab bar. Is there any way to make the traffic lights always visible or keep them from moving?

My previous version of Firefox was on the fritz and I was afraid there was malware in it so I uninstalled it. When I reinstalled it I realized all my bookmarks were missing and I can't figure out how to restore them from my profile or a previous backup. Please help! Thank you.