Firefox Community Forum

I use Firefox on a Dell Windows 11 laptop. This morning, when I opened my Outlook email, I discovered that in-message links no longer opened in Firefox (my default browser). I've checked everything I and other people can think of on the Outlook end--I'm waiting for further suggestions there--but I'm wondering if some Firefox setting could be causing the problem. Does anyone have any suggestions on where I could start looking?

Firefox keeps crashing. I tried refresh and am afraid to totally uninstall for fear of losing my tabs and data. Why is this crashing all of a sudden. Also will not play Youtube videos. I have cleared cache and history.

I downloaded the new firefox, when i loaded it up it asked me to create a new profile and there was a folder on my desktop called old firefox data. My current issue is that i cant figure out how to load my old data and restore all of the profiles I had and my profiles folder is a mess.

So what I am trying to do is determine how to sort out my profile folder and tell which profile is which without loading them all into firefox. And then I am trying to figure out how i can use the profile manager to manage a few different profiles and when i use that build in manager where are those profile folders supposed to end up.

Can someone help me with potentially very detailed instructions because this situation is insanely frustrating and all I want to do is maintain three different profiles and I feel like that shouldn't be that difficult.

You forced a download of of the new FireFox and it wiped out everything - favorite, history, etc.. even though I have signed into my profile. I don't even have the option to import from my previous version. WTH?!

As per the title.

I have a videoeto illustrate this issue

URL https://www.yell.com/ OS Windows 11 Pro v 25H2 Build(26200.7171)

Hello!

SECERITY: LOW, COSMETIC DESCR.: I love how many yhere are beautiful themes for ff. I Like to install any the I think is beautiful and keep enjoing all of them by switching them to see it on FF itself. Now - not aftyer every change of active theme, but after a few/scrooling the order of the Themes on list is re-sorted. It is a little trouble for me as I like to chnge/watch them afew times a day (like person who like to watch theirs clothes, how their look in that clothes, so they keep changing them and see how they look in the mirror). So Id like the list of themes to be fixed, so I can go throuh the whole list and make sure I didn't missed any of my installed themes. OK, I hope I manage to explain it. I'm 40+ yo soft dev. so you can ask me technicall questions. And also: a setting among about:config to change this list behavior whould be absolutely enough solution for me.

Best regards, Michał Dąbrowski

Hi, I am writing from a fresh Nobara 42 install, using Gnome 48 and the default Wayland session. Firefox version is 144.0.2. I'm not sure this is the proper channel to report a bug, I expected a more standard form. Please redirect me if you know of a better place.

Essentially : click+drag using the tablet doesn't work, be it on web content or on the GUI. When I click+drag to move a tab, the rab is ripped off into a new window as soon as the drag event begins. This happens with both regular & vertical tabs. Simply clicking tabs -without moving the pen enough to trigger a drag event- activates them normally. Click+drag on a bookmark or history item does not work either. When doing so on a bookmark folder, it seems to be always registered as a click, and it consistently triggers the opening/closing of the folder, regardless of the distance traveled by the pointer between the press event and the release event.

Exception : click+drag to select text works fine. However, click+drag to move that text into the address bar to look it up does not work. The text stays selected, the pointer icon doesn't change to indicate that something is being dragged.

Note : I am using the terms "press event", "drag event" and "release event" liberally here. I don't actually know how this all works, it's magic to me. But I felt like this was the most straightforward way of communicating what's happening.

I have a mouse to the side, that I use only for this. But it would be nice to be rid of this necessity. Any help is welcome! Thank you.

Hadrien

FF bug (?) (my own tests), Chrome works as expected, was also gemini ai discussed.:

 Why for the following css rule (new FF):
 header:has(~ noscript) ~ * div[class*="-slider"] {width: calc(var(--number-of-slides) * 100%);}
 the --number-of-slides is defined and visible:
 header:has(~ noscript) ~ * div[class*="-slider"] {--number-of-slides: 1}
 but this one isn't at all:
 header:has(~ noscript:has([value="1"])) ~ * div[class*="-slider"] {--number-of-slides: 1}
 And all remembering that in the noscript there is direct descendant having value="1"

As mentioned it works as expected (so average person naturally may think it sould) well for Chrome - noscript is visible, js disabled, controls are visible. Sophisticated use case of :has() but it sort of "has right" to happen.

Firefox just auto installed the latest version 145.0. After about 15-20 minutes of usage, Firefox stops responding and hangs. I ran the Task Manager (Windows 11) and found Firefox was consuming 96% of the available memory. I have to kill the task to regain control. I'm left with switching to a new browser and will probably never go back.

Using Firefox 145.0 (64-bit), "Firefox is up to date" on PC with Windows 11 Pro.

I was so pleased when Firefox's Group Tabs arrived. I often have about 12 tabs open to do Railway research. So I thought, Group Tab, great idea. Save a group of tabs as one tab. Instead of creating a Bookmark Folder and each time opening all bookmarks from said folder, what better way to do than opening one tab. Or so I thought. I also created a "SHIP" tab for my hobby in the shipping industry, so I could have two group tabs that could be collapsed making the tab bar tidier. I saved an closed each group tab then closed down my PC. Next on restarting, Firefox starts up automatically as chosen by me. Both RAIL & SHIP tabs reappeared without me doing anything. Great! However yesterday, I inadvertently opened another Firefox window, forgot it was opened. So when I shut down my PC, I closed the Firefox browser and then discovered the over Firefox window I had opened. Closed it shut down my computer. Of course when I opened my PC today, Firefox started automatically, but with the tab that I had open in the last Firefox window. No problem I thought, I will just open the saved Group Tabs. It was a problem, where are the Group Tabs saved? Could I find the location? NO! I looked in Bookmarks, all the various History lists, even the down arrow to list all tabs. Nothing, the Group Tabs are none existent. I have checked on the "about:config" section for Group Tabs and everything is enabled "true". So where are the Group Tabs saved? I have been with Firefox for around 14 years, often citing it as the best browser. But over the last five years I find myself using Chrome more and more. Chrome has Group Tabs which do not not need the users to save them, they are saved automatically, and are easily found on opening the Chrome browser. Why doesn't Firefox have this?

After upgrading my Firefox to version 145, a blue line appears at the top of the browser window when it's in full-screen mode and the current window is focused. I know this is to remind the browser window that it's currently focused and interactive, but I really hate this notification and want to make this conspicuous blue line at the top of the window disappear. I couldn't find a relevant option in the Firefox browser settings. Does anyone know how to set this up?

Please help me to disable this focus tip,thanks!

This morning when I started up Firefox it had a pop-up about the new profiles feature, asking to create a new profile. Just out of curiosity I clicked the create profile button to see what the interface would look like. Since I didn't actually want to create the profile I hit the delete button, but nothing happened. So I closed the window. I then tried delete the new profile (then called "Profile 1") by hitting the trash can from the choose profiles screen. Still nothing happens. At this point my original profile window is still open, but I close everything to restart Firefox in hopes that it will allow me to delete this profile I never wanted to begin with.

The Choose profile window comes up, I select original profile and nothing happens. I can open the new "Profile 1", which I have since labelled "Bad Profile".

D:\Users\<USERNAME>\AppData\Roaming\Mozilla\Firefox\Profiles doesn't appear to have my original profile anywhere.

I'm deeply concerned this beta feature I never asked for has deleted my original profile when it should have deleted the new profile.

Lately , when clicking on the link in the Winloot Live emails in order to enter , quite often the link causes Firefox to freeze. Task Manager shows that the memory usage more than doubled. Only way out is to use task manager to end Firefox. Possibly an issue at the site itself. Anyone else seeing this?

Hi, da anscheinend Firefox zu faul ist um einen eigenen Support an de start zu bringen, muß ich es auf diesem weg probieren. hauptsache man kassiert die kohel für die plazierte werbung. bei einem Win10 64bit starte Firfeox nixht mehr. auch nicht als admin. wenn ich es anklicke, passiert nichts und ich bekomme es auch nicht im taskmanager angezeigt neuinstalation bringt nichts danke euch

Firefox did an update and "couldn't find XPCOM" and crashed. Uninstalled and re-installed but now my Firefox icon opens a website "nine.com.au". I WANT MY FIREFOX BACK!!!!!

Reporting an ongoing issue where the Saved Credit Cards section is missing from Firefox’s settings. Autofill for credit cards still works in the browser, but I cannot view, edit, or delete any stored cards because the entire UI section is gone. The Payments / Saved Credit Cards section does NOT appear under Settings → Privacy & Security → Forms and Autofill. Autofill still fills credit card data, so Firefox clearly has stored cards. I just can’t manage them.

Older threads are now closed. Here is what I already checked

I confirmed the following in about:config: extensions.formautofill.creditCards.enabled → true extensions.formautofill.creditCards.available → true Set extensions.formautofill.creditCards.supported → "on"

Restarted Firefox

Whenever I use FF to get a PDF file, It is corrupted. It seems to download ok. It will display, but copying from it yields garbage. Using apples Preview for speaking yileds jiberish. I do not have this problem with Safari

I had this problem for months even before my latest OS was install. Mac mini, M2, Sequoia 15.7.1, FF 145.0 (aarch64) kleps@uic.edu

Hello!

I use a VPN when I access the web and I recently updated my OS (Mac OS Tahoe). I updated Firefox and now DNS over HTTPS (DoH) is enabled in Firefox. When I have my VPN enabled, I cannot access the web, there is some problem with DNS resolution. I have changed my Firefox DoH settings to Standard (I have also used Strict) and have typically been unable to resolve web URLs correctly. There have been a few times that I have been able to use 'Standard' DoH strictness / settings and also use the VPN successfully at the same time, but typically when I have the VPN enabled Firefox cannot access whichever 'mozilla.cloudflare' address it is attempting to use for DNS resolution.

The VPN vendor suggested always using the VPN's DNS resolver. I have done this and I still have the same problem. What should I do to ensure that I have secure DNS and can successfully use a VPN?

Thank you.