Firefox Community Forum

I see that this addon called Rotate Youtube Video (+ Zoom / Mirror) is restricted for violating Mozilla policies.

Has anyone taken look into it what was exact violation? I am curious if it was stealing info on background? It just says it violated policies but I want to know if it is safe to keep using it? Like if it was disabled for legal reasons then I would not care but if it was disabled for containing malware then I would care. Any ideas?

Don't know if it's the latest Firefox or latest Windows 10 update or what but since the last Windows update happened I cannot open Firefox. I get the message "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." Task Manager shows 4 firefox processes including 1 crashhelper and 3 firefox approximately 70 mb, 4 mb, and 32 mb. I tried to disable the SkeletonUI by editing omni.ja but that didn't help. I tried uninstalling and that didn't help. I tried the refresh option first but ran into the same open process error so that wasn't an option. I am quite stumped. Any advice appreciated. The lock file shows up as SkeletonUILock-c388d246 in appdata/Local/Mozilla/Firefox and it disappears when Firefox is manually booted from Task Manager. It can't be examined when it's extant since it's in use by the Firefox process (presumably)

I have Windows 7 which is not supported now (older Toshiba laptop). firefox suggests using Firefox ESR 64-bit. I think it downloaded, but not sure. What can I do about this and be able to use it?

Since a few weeks I have been encountering an issue where tabs in Firefox would frequently crash. I do have various add-ons installed, however I haven't installed any new ones around the time the issue has been occurring. I've been unable to track down which add-on or if any add-on might be causing this.

Trying to search for this issue all I could come up with is that it might be an issue of a faulty CPU. I have an i9-13900KF which has been known to be part of the Intel generation with serious flaws. However I already installed a BIOS update and applied Intel's recommended settings to undervolt the CPU to prevent any issues. This was well before the Firefox tab crashing issue happened. So I'm not sure if it can really be the issue of a faulty CPU, but I've also had issues of other programs randomly crashing recently (like Discord or Steam).

The tab crash can occur on any website, for example Youtube, Duckduckgo, Protonmail, etc. The crash reason always is either "EXCEPTION_ACCESS_VIOLATION_READ" or just "EXCEPTION_ACCESS_VIOLATION". The crash also most of the time (but not always) occurs when loading the page itself or a video / live stream on it. But not when browsing an already loaded page (for example this forum post page I'm writing right now).

Here are some of the crash reports I've submitted:

EXCEPTION_ACCESS_VIOLATION_READ: https://crash-stats.mozilla.org/report/index/60309ae8-8cad-43ac-8b9b-172b10250815 https://crash-stats.mozilla.org/report/index/fecef0ab-d874-4cb5-990b-e49650250815

Rather rare "EXCEPTION_ACCESS_VIOLATION": https://crash-stats.mozilla.org/report/index/114b26fa-4e10-442c-bbd5-406630250812

Could someone help me narrow down this issue? Can it really be a faulty CPU and I need to trade mine in?

I have Marionette mode enabled to be able to remote control my Firefox, but I have trouble with some sites who believe I'm not human.

If I enable Marionette, then go to this site, I can't get past the Human verification.

https://www.perplexity.ai/shopping

Can sites detect that I'm using Marionette?

How do I update Firefox to perform like it used to before the last update. Firefox on my laptop cuts off the right side of the selection box so I can't select 2nd step, text, email, or password and continue doesn't show. It works in Chrome, not in Firefox.

My wife and I have email accounts with proton on our previous computer with Windows 10 The new one has windows 11. She can sign in to her email -no problem. I'm told "incorreet credential"! But same one used for years, and still works on "old computer" Many companies use that email. How do T get to it on the new one?

I was trying to customise my browser settings, decided I didnt like any of the changes,and wish to get back to where when I open firefox it shows shortcuts to my most recent, or most used places. How do I return to that setting?

Thanks.

I installed a voice recognition feature on my Replit-built app, and when I activated the app, I received the error message: 'Your browser does not support voice recognition. Is there any version of Firefox that supports voice recognition?

When I log into apps and other sites FF is displaying and recommending current and/or old login information. I do not want FF to make any login recommendations for me.

For some reason, starting since last week, whenever I try to upload something online, instead of opening the most recent folder I uploaded from like it used to, Firefox keeps opening the same folder. Although, for some reason, this mainly happens on YouTube. Is there a fix for this?

Lately I’ve noticed firefox slowing down a lot on certain small game sites. for example, I was doing a daily word puzzle on spellbeegame.com and after like 10 minutes, it started lagging so bad I could barely type in letters.

I cleared my cache, disabled a few add-ons, even restarted the browser — same issue. The weird part? It works perfectly fine in chrome.

Is firefox just bad with these interactive game pages? or is there some hidden setting I’m missing? Would love to get it fixed because I actually prefer using firefox, but the stutter kind of kills the fun.

anyone else had this happen?

I have lost my History and Bookmarks. A message appears 'The bookmarks and History system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem' I use Asast One and Malwarebytes. Can you help please? I am not very technical so if you can put an answer in very basic terms that would be appreciated. Thank you. Arthur Moody

Seit dem letzten Firefox-update wird alles in allen Bereichen nur noch in English dargestellt, obwohl in "Einstellung" Deutsch ausgewählt ist. Firefox ist mein Hauptbrowser. Mein Betriebssystem ist win 11 home

When the above add-on is activated it seems like the process is hanging. The Webadvisor icon flashes about once in a second. Is there a better solution than to desactivate it? Thank you for comments.

i keep getting Firefox crashes and i also get Firefox already running close firefox i have the latest version i do not understand why please help thanks

When I start Firefox it's not asking for my primary password.

It's not autofilling an important site and I need to access my password for it, but when I try to access passwords I don't get the 'enter primary password' box, just a message at the top of the browser window telling me to enter it and a button saying 'log on'. There's nowhere to enter the passowrd and the log on button does nothing.

This is midly terrifying...

Neil

Hello, I am running scripts (Javascript, VSCode, for automated software testing(websites). Testing with Javascript en Cypress but tests do not run when FF browser is selected, No error message.. In %temp% there is no geckodriver.exe. The Cypress window just keeps showing a spinner and nothing happens, the test does not load and run on FF browser. The other browsers available to use(Chrome/Edge/Electron) can be selected and Cypress runs the tests with no problem or issue. It seems a geckodriver needs to be installed but how and where is not clear to me. Does anyone know how to get Cypress to run the test on the FF browser? Cypress Version 14.5.4, Node version v22.18.0 LTS, Windows 10 Pro. FF 141.0.3 Perhaps any Cypress+FF ninja testers here as well that could help me to get this solved?