Firefox Support Forum

last night i reset firefox in order to fix a software error. all of my data is still connected to the browser and i have no problem opening my installed addons and bookmarks. my profile folder is completely missing. i tried to open it from the open folder button in about:profiles and about:config pages. i got the same exact location is missing error message every time. i went into my appdata folder and checked local, locallow and roaming. there was only one mozilla folder in locallow and it was completely empty. about:profiles says that my current profile, the default release one, is currently in use, but it isn't on my computer. there's not even an old data folder like some articles suggested. i haven't deleted or fiddled with anything since the reset. nothing is in my recycling bin. i've reread every article at least three times and none of them have solutions i can use because the mozilla folder is COMPLETELY MISSING.

I am experiencing crashes when I open a tab from a website I've gone to frequently with no problems. OR I get into the site , go to another page and it crashes. This is only happening on Firefox. I may have changed some permissions, when I was having a problem with sharing my screen when I was in a Zoom session. Please help if you can.

Running firefox 99.0.1 on manjaro linux with pulseaudio 15.0. When I change my default audio device firefox will not switch its output even after reboot. The only way to switch the output is by disabling the hardware in configuration.

Tried running in troubleshooting mode with the same problem.

I've been through the usual listed issues, refresh, disable add ons (only one), disabled AV, clear all history, passwords, etc. Checked that the latest update is installed. Have done malware and virus scans with no ill reports. This can't be normal. What else can I try to resolve it b efore moving on?

Hi there,

Firefox is my daily browser and a few websites are causing recurrent issues. Aliexpress randomly switches language and currency, but the most annoying problem is that it doesn't let me change it (clicking on it doesn't give the menu it's supposed to give), and searching any item in the search bar just gives the "spinning star symbol", and nothing else.

Similar issue in eBay: some menus just don't open, including submenus in the "Contact seller" form, which cripples the whole experience.

As a comparison: all these websites work fine in a slightly outdated Safari 14.1.2. and the most recent Vivaldi.

Now, I saw the issue being mentioned here 4 years ago.

What I tried:

1. cookie /cache cleaning, which I did to no avail.
2. Safe mode: no change
3. Switched back privacy settings to "Standard": no change.
4. Manually copied files from one profile folder to another: as could be expected, no change.
5. I even tried a full refresh, but with extensive customization already performed over the years and most of it either in about:config or extensions, I couldn't spend the time re-setting everything back to normal.

FWIW a list of all files and folders shown in my profile folder. I specifically excluded the "known good" files (see step 4). Interestingly, FF also generated an "Invalidprefs.js" file.

I think your latest version is preventing me to access several sites that I use regularly.

Please let me know? and please fix it?

I wish to continue using Firefox but this is creating delays and difficulties.

Thank you

Hello,

I have a new Cisco Webex Desk Camera that it's not working with Firefox (Flatpak on Fedora Silverblue 35).

lsusb: Bus 006 Device 004: ID 05a6:0023 Cisco Systems, Inc. Cisco Webex Desk Camera

https://mozilla.github.io/webrtc-landing/gum_test.html shows two cameras "Video Capture 4" and "Video Capture 5", none of them work, the page shows an error message: "AbortError: Starting videoinput failed".

The same website works in Chromium (also a Flatpak), which only sees "Video Capture 4 (05a6:0023)". "OBS Studio" is also able to use the camera. "Video Capture 5" is not available in Chromium and freezes the image in OBS Studio. I believe Video Capture 5 is the IR camera that is used in Windows Hello.

Would you be able to help me to get this camera supported, please?

The page I was on randomly crashed earlier today, and now every time I try to open another webpage, it crashes within 1-5 seconds of when I try to open it. I have tried restarting Firefox and running it in troubleshooting mode, neither of which helped. My Firefox version is up-to-date, and I have never had this issue before; I'm also not getting the "crash reporter" dialogue so I don't have access to information about the crashes, even through the Finder library. I'm not sure what's going on?

Hola, tengo un problema, Firefox ha dejado de cargar, da este mensaje "Couldn’t load XPCOM" he intentado hacer otro perfil, he borrado las carpetas he reinstalado... pero sigue dando el error. gracias.

Solucionado viendo un video en Youtube:, por alguna extraña razón, simplemente cambiando el nombre de Firefox.exe por firefox1.exe, carga y funciona a la perfección

Hello, I have a problem, Firefox has stopped loading, it gives this message "Couldn't load XPCOM" I have tried to make another profile, I have deleted the folders I have reinstalled... but it continues to give the error. Thank you.

on my Win10 64b system the FF browser keeps the tabs visible after the last 99.0.1 update. i didn't make any changes to the browser after that update that i can recall. thx!

Hi,

I seemed to try everything I found at the net, but since I updated to Mac OS Monterey, Chinese and other non Latin Charaters don't show up. It works with Chrome and Safari, What's the problem.

I look forward to you help asap.

Thanks, Carolyn

btw: can't upload screenshots  : (

Hi, I run windows 11 on my laptop. Whenever my laptop goes in sleep mode, all Firefox tabs closes automatically for no reason! and when I open it again a button appears saying (Restore old session) I need it Firefox to stay opened when the laptop goes to sleep. How can I fix that? Thanks in advance.

This is the issue: anytime I have firefox open, it is running between 16%-30% CPU usage (consequently running a train on my battery when not plugged in, and making the laptop fan go wild 100% of the time, reducing battery life from a normal of 2-3 hours to less than an hour). It doesn't matter if I disabled ALL addons/extensions, same issue; closed all tabs, issue persists; turned off "restore tabs after I close firefox", issue persists; cleared all but the last 2 months of browser history, issue persists; flipped all performance/use hardware acceleration settings on and off again, issue persists; loaded firefox in safe mode, issue persists. I've searched through all possible similar solutions given on these forums, and none of them have helped, I'm at my wits end here because chrome will not do anything near this on the same computer even with like a dozen tabs open.

I have firefox on multiple computers with windows 10, both laptop and desktop, and this issue is only occurring on a single laptop of mine with windows 10, a mobile i7 processor from 2018, 16gb ram, and a mobile nvidia 1050ti gpu, so it's not like this is an underpowered laptop. I keep my browser updated, my windows updated, my graphics drivers updated, and my addons/extensions updated regularly. This only started in the last few days and the only thing that changed was a windows update (minor not major), but again it's literally only firefox that is having this issue.

Hi,

I recently spent hours troubleshooting, reinstalling the browser + addons, editing profiles + themes, etc. and isolated the problem to the Firefox Color addon (v2.1.7).

When using the following custom theme the bookmarks toolbar does not show up, and the Extensions or Themes sections under settings do not work. Sync does not seem to work correctly too.

https://color.firefox.com/?theme=XQAAAAKHAQAAAAAAAABBqYhm849SC...

I believe this only started happening recently (within the past updates on or before 99.0.1).

Does anyone know if there's a bug in the recent Firefox update or if something else is the issue?

Thanks, HC

Firefox is unable to send the request at the startup, meaning it's just keep showing loading... and then opens the webpage after a couple of minutes. For example, if I open instagram.com: At the bottom it says, "sending request to www.instagram.com" and it stucks on that for some time as I'm not able to click anywhere in the webpage. And sometimes, it says, "transferring data from www.instagram.com" PC and the internet connection is fine. What could be the issue?

Firefox is unable to send the request at the startup, meaning it's just keep showing loading... and then opens the webpage after a couple of minutes. PC and the internet connection is fine. What could be the issue?

I have tried to Install Firefox Multiple Times. Firefox doesn't retrieve any pages when searched (Example:google.com). Even the Settings option is not opening. It is all blank Page.

Tried various options like Refresh, trouble shoot mode, Restarting, System Updates, Uninstalling Visual Studio, Changing Proxy. Nothing works. Kindly help on this solution.