Diễn đàn hỗ trợ Firefox

It won't let me connect to websites due to "Did Not Connect: Potential Security Issue" However, I am certain that it's a mistake, because the websites that I'm unable to connect to are https://web.whatsapp.com/ https://www.instagram.com/ and other trusted websites. For youtube it shows that I'm offline, although I'm connected to the internet. This problem may be due to recent issues related to my internet provider and/or router, because I also have issues with discord app as well as some game clients(Jagex, Blizzard, for example).

hi in a new win 10 instal most text incl Fire Fox text is made up of letters [font] that are made of thin and thick lines [in the same letter]

i dont know if its a strange font or another problem, i have copied all "font" setting from my other pc where i dont have the problem.

also i cant get spell check to work here dsespite turning it on

its very distracting, would be very gratefull for any suggestones if any one can 

help thanks

I have been a long time user of FF and have been puzzled by it's recent failure (to both start, and subsequently re-install) For the last 18 months I have been running Win 12 without problems. That is until last week, when I can only assume the Tuesday udates ( MS) has created havoc. I would appreciate any assistance as I am not fond of MS Edge, or Google Chrome. Dave Hickman.

Dear Firefox Team,

It has re-occurred to my Firefox Browser of the latest version of 115.28 with some websites which I have recently visited however which have appeared 8 grids of blank or white pages again under "Recent Activity" as attached with the image for your technical troubleshooting suggestion.

Those 8 grids of Recent Activity in the older version of Firefox browsers used to have shown colorful graphics or images representative of the recent websites I visited in the recent past.

May I know what I am supposed to do to recover those graphics or images?

Kindly offer any suggestion or solution?

Thank you for your kind attention.

Mr. Topaz Chiu

If adblockers are removed for this particular website" \\Soundarya Lahari All Shlokas Meaning & The Result of Chanting, Worshiping – KannadaTimes.pdf" I can download the content

Hi,

Every time I restart my Firefox browsers they will sign me out of my Mozilla account. I can see the email address associated with my account and 'Account disconnected'. I have to go through the process again every time I use it. I am using default privacy & security settings.

I am using :

140.3.1esr (64-bit) on Debian Trixie 143.0.4 (aarch64) on MacOS Tahoe 26.0.1 143.0.1 (64-bit) on OpenSuse Tumbleweed 20250929

Can you please help me resolve this?

I have just completed migrating my files and settings from my (not so) old windows 10 desktop computer to my windows 11 laptop. Everything seems to have gone ok, except that the Firefox bookmarks were installed and only work in the private browsing window. When I start Firefox normally, the window that opens does not have the bookmarks, and even if I enter a web address manually in this window, it will not connect. I can choose "New window" in the drop down menu and that window will have the bookmarks, but still will not connect. The only way to get the bookmarks and also be able to connect to the internet is to choose "New private window" from the drop down menu. The problem with that is that there have been occasions when I have had a need to examine my browsing history, which I can't do since Firefox doesn't save the history when in private window mode. I have tried the procedure to sync bookmarks, history, etc., but the procedure is somewhat confusing and didn't work for me. Can you simplify the procedure for me? Thanks, John Blakley

Spinning circle when attempting to view a news articles. Tried other browsers and they all work Ok. My issue it seems with the FireFox browser. Thank you for any help.

Kevin

Hi, I've been using tab groups for a while and i had some pretty important tabs save there. I wanted to know if they get deleted after a while or not, Because all of mine suddenly disappeared. And also is there anyway to get them back?

On all our computers it seems impossible to sign into Outlook...several laptops and 3 desktop...even a new Apple device. Enter your email address and then taken to the next page (see attachment). sign in works with Edge! This has been happening for maybe a month. Very frustrating! NEVER opens the next security window, the 'spots' just keep moving forever...selecting "Back" just repeats the cycle.

Since the recent Firefox upgrades, I am no longer able to log into the social security site using ID me. Previously, I logged in with no problem but now get a 400 error message saying the website is too large. Of course I have emptied cache and cookies and reloaded Firefox but nothing works. Apparently the error lies within the Firefox upgrade since before upgrading, there never was a problem logging in.

Can the notification for upgrading be controlled on ver 143 on linux. It keeps appearing and as a user I should be able to silience or have it notify me at a period I prefer instead of interrupting browsing.

Using version 143 PIP does not work on different workspaces. If I open PIP the PIP only remains on the desktop that FF is on and the PIP disappears on othe workspaces.

The issue started about one week ago (today is 10/11/25). When I wanted to print while in Firefox browser, the print never executed. Instead the screen froze as did the browser. I had to do some experimenting to use my pointer and open a different browser. Yes - besides the pointer being frozen (all that showed was an hourglass) my keyboard was also frozen. When I finally opened a different browser and printed the same item, no problem. I had to close Firefox to be able to fully use my laptop again. I searched the solutions and none had an effect. Firefox would still freeze/hang/lock up when trying to print. The browser is up to date.

In one of my Firefox installs, the Profiler automatically starts recording every time I open Firefox. There's a button on the right that looks like a speedometer and it is blue until I tell it to stop. Then it is taskbar button color.

Profiler instructions at https://profiler.firefox.com/docs/#/./guide-removing-profiler say to simply drag this button off the toolbar and it will stop record. On restart, it's back on the toolbar, and it's recording.

I have tried refreshing Firefox. Doesn't help.

I have tried uninstalling and reinstalling Firefox, and then setting up a new profile. Doesn't help.

I have tried deleting prefs.js. Doesn't help.

I have tried opening up the developer console, opening settings, and unchecking "performance." Doesn't help.

I searched the registry and found a key called MOZ_ENABLE_PROFILER (iirc, something like that). I set it to zero. Doesn't help. I then deleted the key entirely. Doesn't help.

How do I get rid of this thing? It must be a registry setting of some kind, as it appears in whatever Windows account I open Firefox from, but I can't find it. It is deeply frustrating as the computer it is happening on is my oldest computer, and I don't want a recorder running in addition to Firefox.

Bonjour en voulant aller sur un site connu et auxquels je vais j'ai eut ce message je n'ai rien modifié sur mon ordi d’où cela viens t-il et surtout comment y remédier. Merci "Pourquoi ce blocage ? Quelque chose dans le comportement du navigateur nous a intrigué.

Diverses possibilités:

   vous surfez et cliquez à une vitesse surhumaine
   quelque chose bloque le fonctionnement de javascript sur votre ordinateur
   un robot est sur le même réseau  que vous

Des difficultés pour accéder au site ?"

On my linux system, I have two users. If I log in as user A and use FF and leave a bunch of tabs open, I can view those tabs again later if I restart my computer and log in as user A, so FF remembers its history.

No Problem Scenario Logged in as A - open FF - open a bunch of tabs - CLOSE FF log out of A log in as B - do stuff log out of B log in as A - open FF; all the tabs are there

Problem Scenario Logged in as A - open FF - open a bunch of tabs - leave FF open (don't close FF before...) log out of A log in as B - do stuff log out of B log in as A - open FF; all the tabs are GONE

If I run into the Problem Scenario, I can sometimes use these steps to get the history/tabs back. https://support.mozilla.org/en-US/kb/how-restore-browsing-session-backup

Whether the steps work or not, the Problem Scenario is annoying. I don't know what causes this. My desktop manager is KDE.