Firefox Support Forum

My laptop set-up is practically identical to that of my PC, but the latter doesn't exhibit the same malfunction.

I've tried anything I could, including reinstalling the browser, removing all of my bookmarks (about 10,000) and addressing extensions (Decentraleyes, Default Bookmark Folder, Disable Tab Detach, Flagfox, I don't care about cookies, Keepa, Notifier for Gmail, Privacy Badger, To Google Translate, uBlock Origin, Undo Close Tab, Video DownloadHelper and Youtube's Annotations No More), but not even safe mode improved the situation in the least. Windows Defender also hasn't detected any malware and my web surfing habits are as safe as it gets.

The only deeper data I could gather is that the problem manifests with a progressive, rapid surge in CPU and RAM usage; the former, for example, is saturated to its total 16 GB in a matter of about 20 seconds.

My laptop is a Dell Inspiron 7586 with Windows 11 64 bit; Firefox version is the latest, 100.0, and, by the way, none of the recent updates has improved the situation.

Thanks to anyone who might come up with an educated guess!

So I got on my computer today, and I tried to open Firefox, but it wouldn't open, I would get a loading icon on my cursor and then nothing. So I restarted my computer, same issue. Reinstalled Firefox, same issue. I then reinstalled after having deleted the %appdata% folder for Mozilla, but that also changed nothing. So I looked in Task Manager, and it would just open instances of Firefox as a background app no matter how many times I clicked. I've also tried using other browsers with no success. (Also, I'm runnning Windows 10, 64-Bit version, and had not installed any programs recently before Firefox stopped working.) I would greatly appreciate if I could get some assistance with this because I prefer Firefox much more than Microsoft Edge which is the only browser I'm able to use right now.

I have stated this issue once before after trying to find a solution by myself.

My query: https://support.mozilla.org/en-US/questions/1363376

Whenever I boot up my laptop, firefox starts running in the background taking up a lot of memory space and cpu utilization. I have been with ffirefox since I started using laptops which is 7-8 years back. I never thought of switching browser or finding an alternative of firefox until for some months the issue is occurring. Now I am really annoyed to open up task manager every time and close firefox which is running in the backgroud. I have seen nothing unusual in the "about:performance" tab of firefox.

Please help me to continue my journey with firefox.

Firefox (and chrome, but not edge) crashes on startup. There's no crash report. The window shows up as an outline for a fraction of a second and then is gone. It doesn't show up in task manager. I've uninstalled and reinstalled multiple times. I've updated windows and my antivirus. I've tried a few other fixes that came up from searching for a fix, but so far nothing has helped.

In the last few weeks FF has started running really slow. Launch takes 4-5 minutes, the browser won't navigate to any webpages. Preferences can't be opened. The force quit window show the app to regularly moving in and out of a "not responding" state. I had version 95.0.2 installed (the latest). I'm running OSX 10.15.7 (catalina). I uninstalled an reinstalled 95.0.2 and the same problem persisted. I downgraded to 94.0, and created a new profile in the process, and still had the performance problem. Chrome and Safari don't have the problem, and my machine is running as expected with all other apps. I don't have any sites load upon launch. I have 16G of RAM.

Since I can't open prefs, I can't purge caches or anything like that.

why is FireFox 95 opening multiple windows on startup with Windows 10, Roboform, & Norton 360? FireFox is set to open a new tab, not new windows, so I do not know why it is doing this? I see lots of people asking this question, but there is no guidance online. What is up? This is causing FireFox to use way too much resources, and slows the computer.

Firefox will start once (maybe) and then it makes no difference where I click from (tray, programs, desktop shortcut) Firefox refuses to boot up. I've tried re-installing multiple times. If I reboot, it will start. Also sometimes I will get a New tab but the page/URL never comes up. Firefox just hangs. I'm running Windows 11.

Can you put one of those hourglass "wait" symbols to show on the next update because I never know if Firefox has booted or not and if you hit it again, it corrupts the next boot and wastes a bunch of time.

I am using Firefox 94 on Debian Linux (details below). I've been a happy FF user for many years but, ever since I updated to Firefox 93, I've been facing an odd problem.

When I start FF (usually using my system launcher or the command line), the first window that opens will not allow me to open a new tab. Press the '+' button does nothing; trying to open links in a new tab does nothing; etc. Not only this, but it seems like there are other problems (e.g. my adblocker does not seem to be working in YouTube), but I can't confirm this.

When I open a new window from the menu, all functions work normally in the new window. But the original window continues to have these problems.

This isn't a major inconvenience, but it just seems like an odd bug.

One factor that might have something to do with this - I run FF inside Firejail. I start FF via a one line script:

`firejail /opt/firefox/firefox`

Maybe this has something to do with it?

Thanks so much to Mozilla for this wonderful piece of software, and to all of you for helping out with it!

I just installed the Firefox browser using the installer on the official website. When I attempt to open Firefox, even as administrator, the window either quickly opens and closes or doesn't open at all. I have no clue what is happening.

Firefox loading at logon and using 35% CPU

I have searched Windows Registry, Task Scheduler & Used Utilities to list and monitor Autoruns, Starups. I have no settings for this to happen.

It's getting close to time to DELETE FIREFOX since MSEDGE built on Chrome is Faster anyway!

When opening any version after 89, Firefox opens then is unresponsive to any action. I have to force quit. I copied the crash report that is sent to Apple. It is a 500+ page Word document. The only solution is to reinstall v89.0.2 and it works fine. Then not allow automatic updates.

Any suggestion appreciated.

Thanks Ken

I have installed Firefox on my android phone now that I have installed Firefox browser on my desktop. Trouble is when I run it (on my phone) it very briefly flashes black & white blocks on screen and then makes my phone reboot. I have a Samsung galaxy S4 with android 9.0 (pie) installed. Is there anything I can do to make it work?

Two days ago Firefox randomly started crashing on start up. I click on the icon and the window pops up for a moment and then closes immediately. I get no crash reports. I have tried reinstalling Firefox and deleting the cached data. I have tried running Firefox in Troubleshoot Mode and as an administrator. I have tried restarting my computer and updating my computer. I did not have any addons installed on Firefox and I was using the default theme. Nothing is working.

Any help you may have is greatly appreciated.

Firefox opens in a small box at the top left of the computer screen about 1/9 the size of the viewing area. I have to click on the "maximize" icon (the square box(es)twice to get a normal viewing screen. Note: I am not referring to "full screen." This began after the last Firefox update. I have cleared the cache, cookies, data, etc. and startup cache and restarted Firefox and the computer. I haven't "Refreshed" Firefox, yet, because I don't want to go through the hassle of putting everything back together if it isn't going to work. How do I get Firefox to open in a "maximized" window?

I had tried everything. I have deactivated all FOUR of my plugins and started up Firefox again. I have uninstalled and reinstalled a fresh copy. I installed Firefox on an SSD even and it is still painfully slow. I have the same plugins and such on Chrome and that one opens up immediately. So I have been using Chrome a lot more lately because Firefox is opening slowly these days. Takes 15-20 seconds for Firefox to open every single time. I have deactivated each plugin one by one to see if they were causing the issue and sure enough, all of them were clean. Firefox still opens slowly.

On an unrelated note, I have been using Chrome a lot more lately also because some things on a webpage don't work on Firefox. I can't explain it. Like on the hickory farms website, I click on the Add To Cart button and it looks like it is being pressed, but nothing is added to the cart. This type of thing happens across the internet on many different sites. When I go to Chrome, everything works as it ought to. I have my settings set to Standard in Privacy and Security. I don't know where else I have to check and change things to get those buttons and other links and such to work.

Hi,

My name is Julio. I'm from Brazil and i'm using Ububtu 18.04 LTS OS. After an update/upgrade routine firefox have started to crashing at startup. I've tried almost everything avaible on mozilla's support webpage (https://support.mozilla.org/pt-BR/kb/falhas-do-firefox-solucione-previna-e-obtenha-ajuda#w_peca-ajuda-para-solucionar-esta-falha). I've already removed manually the folder .mozilla (~/.mozilla) and tried a clean install using different ways: ubuntu repository, comand line (sudo apt install firefox), synaptic repository, downloading the firefox-89.0.tar.bz2 file on firefox webpage... and nothing have worked for me. I can't access the troubleshoot mode (the app crashes before that). When i ran firefox on comand line the outcome is:

ExceptionHandler::GenerateDump cloned child 12536 ExceptionHandler::WaitForContinueSignal waiting for continue signal... ExceptionHandler::SendContinueSignalToChild sent continue signal to child Exiting due to channel error. Exiting due to channel error. Exiting due to channel error. Exiting due to channel error. Exiting due to channel error. Exiting due to channel error. Exiting due to channel error. Exiting due to channel error. Exiting due to channel error.

Despite the information avaible on support webpage, i couldn't find a folder ~/.mozilla/firefox/Crash Reports/submitted. I've found just text files: LastCrash and submit.log (and another stuffs).

Follows the content of submit.log file:

[dom 06 jun 2021 23:10:29 -03] Crash report submitted successfully [dom 06 jun 2021 23:13:31 -03] Crash report submitted successfully [dom 06 jun 2021 23:16:23 -03] Crash report submitted successfully

And the content of LastCrash is:

1623033026

Could somebody help me, please?