Firefox Community Forum

Windows Defender is blocking Yandex.Ru, which is not even been tried to be access from. It showed in the Event Viewer that firefox.exe tried to reach Yandex.ru. Why is Firefox trying to reach there? There are no extensions apart from Firefox Multi-Account Containers installed.

Please advice.

Right below the search bar my browser has a warning "The security sandbox is disabled. Your configuration is unsupported and less secure."

I am on Windows 10. I have tried uninstalling firefox, removing appdata and all other firefox files and settings, resetting about:configs settings, disabling my BitDefender antivirus. Nothing fixes it. Completely fresh install of firefox still gives me that message. Sandbox level is default (9).

Any help would be appreciated.

With this latest update - which I hate by the way - I LOST EVERYTHING THAT I HAD SAVED ON FIREFOX. Bookmarks, passwords, EVERYTHING is missing.

I'm beyond angry. Recreating things will take HOURS that I don't have.

If there is someway to recover what I had you can begin to get back in my good graces.

Scott Maltzie

I posted a question in here two days ago because my firefox wouldnt open anymore i got a follow up answer telling me to give the crash id but never got a follow up after i sent it . i tried shuffling between profiles and in the end got it working but today my pc had a crash while firefox was open and it had to restart when i tried to open firefox its as if i just installed it and i dont have any backups to be honest i tried checking the appdata folder and there is a profile folder that seems big enough that it might be mine but it doesnt seem like firefox is reading it for some reason i tried switching the data in the profile folder that firefox is considering but it didnt work .

Several websites are not loading their content since yesterday. YouTube has a message "Try searching to get started" and even when I open a video, it won't play. X.com is not loading content in the pages. So far it's those two.

Through extensive troubleshooting, I am unable to get firefox to open at all.

I've done a full uninstall, cleaned all user directories, program files / x86, program data, appdata roaming and local, etc. I used the Microsoft uninstaller and even Revo Uninstaller to remove everything related to Firefox, did a restart and reinstall of the latest one and it still won't launch.

Firefox was previously working until a reboot occurred and now it won't launch.

Firefox 32 bit seems to work when installed, and running Firefox as an admin previously worked but no it no longer does.

I looked at the following articles: - https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions - https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles - https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles#w_start-the-profile-manager-when-firefox-is-closed

There's no malware on this machine (business EDR on it, even disabled it as a test and it still didn't open).

I was able to launch the profile manager but now I am unable to as the processes launch in task manager and then within 5 seconds they close.

Firefox is not running in the background for any user (I'm the only one logged in after a reboot as well)

I'm unable to open in troubleshoot mode either. Tried run as and admin cmd "C:\Program Files\Mozilla Firefox\firefox.exe" -safe-mode

Ran SFC / scannow / DISM restore health commands as well and both came back fine / no integrity violations

I cannot log in Firefox account. It says I have to log out to log into my account. All I wanted to do is to remove a phone I reset and gave away from my Firefox device logins, but everything quit working with all the AI chaos.

I recently switched from Chrome to Firefox. Now when I try to login to a platform, my verification codes to my phone are coming through too slow. What is causing the delay?

Today following a brief power outage I was no longer able to sign in to AOL with Firefox on my desktop computer. I am able to sign in to all other apps with no problem. I tried clearing my cache, restarted Firefox, restarted my computer and spent 30 minutes on remote desktop access assistance with AOL trying to fix the problem with no success. I can log in to my account using Chrome on the desktop computer and can log in with no problem using my Android phone but can't log in using my desktop computer with Firefox. I've verified that my Firefox version is updated. I am running Windows 11 Pro.

I would greatly appreciate any helpful advice.

FF147.0.1 64bit Linux

I have about:config > toolkit.legacy ... stylesheets set to true, but how can I determine if FF actually 'loaded' the file <profile>/chrome/userChrome.css ?

Alternatively, is there a css tweak that is known to still be working in FF147?

today I tried using a link from discord to go to a site. a window I was unfamiliar with stating it was firefox told me to pick a profile. I had 2 at that point but I saw none at that point. I ignored it and did nothing. I restarted my computer later on after a file browser issue and when I tried to find my profiles and my last session I found nothing. my entire fire fox account has been wiped and I only have a single profile in my app data thats onlder than 2026. I have no idea whats happened.

I would like to know what are the best Antivirus Protection to use with Firefox. Previous information is from 2011 and I would like to get more current information. Thank you

I recently updated to 147.0.1, and now it seems I can no longer access word/excel/powerpoint files for online editing. I have already tried clearing cookies, disabling adblockers, disabling tracking protection, running in a private window, all the way down to completely reinstalling Firefox 147 fresh. This has persisted for roughly a week, so it does not seem to be an issue with my own network connection, nor with Microsoft's services, nor my files specifically since I can edit the files online from my PC at work. The error message specifically reads:

We can't connect to the server at usc-excel.officeapps.live.com (or usc-word-edit.officeapps.live.com or usc-powerpoint.officeapps.live.com, respectively).

I could previously access these files to edit when I was still on Firefox 146, so I'm guessing it's something going on with 147. Has anyone encountered similar issues with Web Office apps, and perhaps found a resolution?

I can't delete the malware "Startfenster. I tried to find help with "Google"-Search. Without any success! This malware exists for me in "Firefox" only. Other browsers are not affected. Perhaps anyone can help me... Thank's!

firefox is my browser. i have windows 11. all of my web (not app) shortcut icons on desktop are the white blank page icon. i used to see the icons for the sources -- the newspapers, etc. none of the standard windows fixes for this have worked. was there a firefox policy change that causes this? i Free Up Space to Onedrive for everything on desktop, but even when I apply Keep on This Device, the source icons still don't appear, so I don't think Onedrive is the issue. in some unsynced folders on the PC, web links appear with a generic blue planet icon, which is as generic as the white page icons on the desktop. I've tried the fixes for windows 11 but none of them have worked. any ideas of a firefox fix for this? thanks!

Mid day Sunday my whole account disappeared and I had to create a new one. If this was an update I dont like it I dont have the time for this. Why did this happen. I have been a supporter for years and now not sure