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I used to have an image (dark, stormy sky) in my new tabs, that appeared as a background to my grid of websites (8 columns x 4 rows). Suddenly, I haven't seen it today - just noticed that it's just black. Can't seem to find where to access the different images. Would like the path to find it, or learn if it's no longer available or if I can make my own. Thanks.

Hi hi, I just did a complete reset to factory settings of my laptop (MSI), and a wipe of my hard drives too. After reinstalling Firefox (literally the first thing I did after setting up windows), it runs more slowly than before the reset (even for a basic search on Google/Duckduckgo). I am also unable to load any pages under the domain discussions.unity.com : the page loads forever, it's impossible to click on anything (even the hovering styles don't work), and I get a banner at the top of the screen that says "This page is slowing down Firefox. To speed up your browser, stop this page.". Also the memory usage for this page skyrockets (gone up to 4000MB??). I've disabled the 2 extensions I have (Dark Reader and Adblock Plus), restarted Firefox, restarted the computer, cleared the cache, even turned off the mozilla syncing, nothing worked. Any idea on what could be happening here? It's the first time in using Firefox for over 15 years that I've seen this happened.

Thank you for your time and attention <3

Roughly every 2 weeks I backup important files to a external hard drive.

One of the things I always backup is my Firefox profile. I have been doing this for years without any problems.

I 7zip my profile and copy it to the hard drive.

I tried to do this yesterday (July 25 2025), and was getting access denied messages for files in the profile. So I tried to simply copy the profile. Same thing access denied.

I cleared the history, used wise disk cleaner, rebooted my machine and tried again. Same thing access denied when trying to backup or copy the profile.

I am assuming that this is happening since 141 because I updated Firefox since the last time I backed up my profile, and never had a problem previously.

Could anyone have an idea what the problem is? Thank you for your time.

I am running an iMac that is about eight years old.This afternoon my Firefox browser was taken over by a "warning" from "MacOS security center" that I should go to THEIR macOS support site to get my system unfrozen. The number they give is 1-877-xxx-xxxx. I cannot get this intruder to go away, even by restarting the computer.

I am on Linux Mint 21.2, and I just updated Firefox (141.0). Now, the bookmarks bar, toolbar, and the tabs (everything above the displayed page), as well as the menu, bookmarks menu, and sidebar, are in light mode even though I have dark mode set (They were dark before the update). I tried playing with the Dark Mode settings to no avail. My system is set to dark mode in general. Are others experiencing this? Is there some sort of fix?

How do I automatically open all current Firefox tabs from one laptop onto a new computer? I just set-up Firefox app on a new laptop computer, and want to automatically reopen all the tabs that I have open on the old computer onto the new one?

How do I do this without going individual tab by tab?

Thank you for your help.

Hello, I want to travel my profile manually. And may automate it by my home computer which is a WebDAV server.

But I find a big folder "Roaming\Mozilla\Firefox\Profiles\fgrfgcgt.default-release\storage\default" It is 2.65G which is a bit big. I can exclude/delete it from my backup?

Hi, When connecting to a HTTP:// site, when you enter your username in the username field, Firefox prompts the user with: "This connection is not secure. Logins entered here could be compromised. Learn More".

How can I turn this message off?

We are running Firefox in kiosk mode in the browser (on a Windows 11 PC), and they are logging into an HTTP site using a touch screen, but when they click into the username box, they sometimes miss touch where to enter this username and instead touch the link mentioned in the message. This then takes them to the Mozilla homepage, but because it is running in kiosk mode, they are unable to navigate back, and they are prevented from closing and restarting Firefox. This is why we need to turn the message off.

It seems that since the Version 141.0 update, initial startup of FF seems to take ve-e-e-ery long (approx 3-4 minutes).

The startup time/lag seems almost the same as it takes to restart after an update.

Anyone else experience this also? Thanks.

Hi, i cant make some actions in my account in browser game (battleknight) . After click on icon ,,mission,, , page is just refreshed and mision is not activated. Also in Highscore, when i hit some icon to sort players, the same issue always happen. It was OK all years long and game is OK on other browsers, this happened after todays actualization. Thanks for some help. (i tried to restart browser, clear cache)

I know that after PiP(Pitcure-in-Picture) is enabled, I can use it in two ways: one is the button on the right side of the address bar, and the other is the icon button floating on the video. I'm trying to figure out how to keep the PiP button on the address bar while hiding the icon button on the video. I do not want to turn off PiP, I just want to hide the icon button on the video. I tried setting it in about:config, but it only seems to have the opposite effect. If it's not possible to achieve what I want, where can I request this feature from Firefox?

We tried 2 different computers, but two different users. Type in the user name and the password and it looks like it will start up, but then returns to the login paged.

Are tab groups like containers i.e. isolated from the others, so thay I can access sites logged into different accounts for instance or separate browsing experience/cookies ?

I’ve been testing how different browsers handle redirects and external triggers from game-related tools, and I’ve noticed something odd with firefox. When trying to launch certain experiences or apply custom settings from external links, firefox doesn’t always behave the same way as chrome or edge—it sometimes blocks or ignores the flag triggers completely.

for example, I’ve been working with a roblox-related launcher that uses something like a fast flag through bootsrap to customize the client experience. everything works smoothly in edge, but firefox seems to either strip the flags or block the redirect entirely.

is there a setting I should look into that might be interfering with these calls? could enhanced tracking protection or strict HTTPS enforcement be playing a role?

would appreciate some help....