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I can no longer use Firefox. It started out as a video problem. Videos became more choppy and eventually stopped playing altogether telling me there were problems with the java script. I deleted all history and caches and that did the trick for a few hours. I also disabled 3rd party cookies. Soon after Firefox would freeze anytime I started it up. It says my plugin container has stopped working; I looked this problem up and found out that some guy had the same problem when he disabled 3rd party cookies. I've tried everything, even re-installed Firefox, which should have re-setted everything! But it freezes as soon as I click on anything, so I can't go into my settings and re-enable 3rd party cookies (if that's even the solution!)

So this is what it looks like now:

I open Firefox up and it wants me to restore pages. No matter what I click, it freezes and shuts down. Then it usually tells me "Plugin container has stopped working." Sometimes I can get past the restore page and to the home page, but it freezes and shuts down as soon as I click anything and repeats the same message.

I really need help! Firefox is the only browser where I can watch or download videos.

All of my add-ons are disabled each bootup or wake it from sleep and start of Firefox session. Once I decide an add-on is desired, I want it to default to be enabled rather than disabled on statup. I've done my best to set preferences to allow my add-ons by default, but either I'm ignorant of how to do it, or it is not obvious

Example add-ons: 1Password; Adobe Acrobat Create PDF; Disconnect; NoScript: Open With Photoshop; Privacy Badger; Self-Destructing Cookies

I've been a very satisfied Firefox user for years but since about ver. 41 (i'm on v. 41.0.2 now) Firefox has become too inconvenient

My computer is 6 years old so it is pretty old in computer terms. It has Windows 7 32 bit and 4G of RAM. Firefox has been getting slow for a while but now it just will not open at all when I click on it though when I shut down the computer it says "firefox needs to be shut down force re-start".

I have tried installing and re-installing, deleting all the App Data etc but this achieves nothing. I can't even get the program to respond by going to all programs ans using shift key to open in safe mode. Internet Explorer and Chrome work perfectly and load within a few seconds. I support the ideals of Mozilla and use the browser on my phone and Ipad but I am finally losing patience with it on desk top. Any ideas on how to solve this before I walk away? I have tried every single option you list on your site and nothing.

My Firefox suddenly stopped opening. I open it, icon appears in dock and immediately disappears. I did a fresh install of 57.0.4 and still the same. It's not already running (checked activity monitor).

PC: MacBook Pro (13-inch, 2016, Four Thunderbolt 3 Ports) OS: macOS High Sierra 10.13.2 (17C205)

In /Library/Application Support/Firefox/Crash Reports there are two files: InstallTime20171226083017 InstallTime20180103231032

Crash ID: bp-554928df-de36-4d6c-8965-d4bd02150127

Hi, just recently my Firefox 35 has been crashing at launch even in safe mode on Mac Os X Mavericks 10.9.5 on a Mac Mini 2.3 Ghz Intel Core i5.

I have tried: - deleting firefox and mozilla folders in Application Support - deleting org.mozilla.firefox.plist - uninstalling flash - reinstalling the browser - downgrading to Firefox 34 and the crashes persist. I haven't had other problems with this computer.

I suddenly started getting the error "Your Firefox profile cannot be loaded. It may be missing or inaccessible.". I followed the directions for removing the .ini file (I'm on Mac OS High Sierra). But the problem didn't go away.

I tried using the Firefox Profile Manager. It does launch the profile manager window where there were no profiles. I created a new profile. It then opened Firefox. I could use it ok. But then I closed Firefox and re-opened it and got the error again.

Here is what shows up in my console window when I run the profile manager:

MacBook-Pro-2:me$ sudo /Applications/Firefox.app/Contents/MacOS/firefox-bin -P MacBook-Pro-2:me$ 2017-11-30 14:27:41.594 plugin-container[8508:15019641] *** CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0xb943, name = 'com.apple.tsm.portname' See /usr/include/servers/bootstrap_defs.h for the error codes. 2017-11-30 14:27:57.203 plugin-container[8524:15021634] *** CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0xae3f, name = 'com.apple.tsm.portname' See /usr/include/servers/bootstrap_defs.h for the error codes. 2017-11-30 14:28:11.580 plugin-container[8533:15023234] *** CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0xc23f, name = 'com.apple.tsm.portname' See /usr/include/servers/bootstrap_defs.h for the error codes.

I can't get this browser to work at all! Is there a way to completely uninstall and start over?

Dear Sir,

When open firefox, error message box pop up on firefox webpage.

Detail of error message is as floow- Error: node:class name: indexOf is not a function. Yours sincerely, Fredric Tun

I haven't been able to get Firefox working on my Mac. This is a fresh install of both the OS and FF 57.

It's 10.13.1 currently, and upon starting the app, I get the following crash.

Some stuff in the problem report:

Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY

Termination Reason: DYLD, [0x1] Library missing

Application Specific Information: dyld: launch, loading dependent libraries DYLD_LIBRARY_PATH=/Applications/Internet:Networking/Firefox.app/Contents/MacOS

Dyld Error Message: Library not loaded: @executable_path/libnss3.dylib Referenced from: /Applications/Internet:Networking/Firefox.app/Contents/MacOS/crashreporter.app/Contents/MacOS/crashreporter Reason: image not found

I should add that this is also happening w/ FF 58 beta.

FF 56.0.2. gives the following error in system.log, but no crash dialog:

firefox(1766,0x70000a521000) malloc: *** error for object 0x100db1c00: pointer being freed was not allocated *** set a breakpoint in malloc_error_break to debug

Going as far back as FF 48.0.2 was no use, either. Not sure this is a Mozilla problem or not. :\

Lastly, to be clear: it crashes immediately - there's no way for me to get into safe mode. I never even see the FF window.

Any ideas?

Firefox was running slowly, so I closed Firefox and re-booted the computer. When I tried to re-initialize Firefox, only the very top portion, above the solid line, came up, and Firefox was immediately not responsive, and it would close only via the Windows "not responsive" window or the Task Master, not via the "x" in the upper right. I tried to initialize several times, re-booted, and tried again. I have also tried uninstalling and re-installing Firefox, with the same result. Is there any way that I can get Firefox back?

Note: I'm using Google Chrome now, because Firefox won't work at all.

This evening, Mozilla FIrefox stopped working on my PC (windows 7, 64 bit, Firefox 49.0.1)

When I start it, there's a 32k process running firefox.exe, but no window opens.

I have uninstalled firefox, deleted the profile folder, registry settings and everything, reinstalled and it still won't run. I have tried turning off Kaspersky and trying safe mode and the results are the same.

I scanned with MalwareBytes and nothing is reported.

The only way firefox starts is if I start windows in safe mode. Any ideas?

Hi,

Firefox does not open. No safe mode, no admin mode. Crash Report window opens every time.

Here's the Crash ID: bp-f980db56-97ed-46dc-a9bd-b743a0181106

Thank you for any suggestions.

Carsten

Last week, Firefox performed an automatic update and restarted itself. Now it never starts. I can see firefox.exe processes running, but no window is ever visible.

Things I have tried:

• uninstalling and reinstalling Firefox using latest installer.
• while Firefox is uninstalled,
  • delete C:\Program Files\Mozilla\* and C:\Program Files (x86)\Mozilla\*
  • delete anything under C:\Users\<me>\AppData\ that had "Mozilla" in the name
• tried using Profile thingy (mozilla.exe -P) -- a firefox.exe process was running, but no window ever opened.

This is on a company-owned laptop running Windows 7 x64 and kept up-to-date. Mozilla ran without complaint until last week's automatic self-update.

PLEASE DO NOT SUGGEST ANY STEPS THAT REQUIRE AN OPEN FIREFOX WINDOW. THAT JUST TELLS ME THAT YOU HAVEN'T ACTUALLY READ THIS.

new computer, ASUS zenbook, windows 8.1, Norton Internet Security, firefox 36

when I try to use firefox to ask a question on this site nothing happens when I press the submit button, am asking this by using IE

I recently re-installed Firefox last week and until today it's been running smoothly, when it suddenly stopped opening. When I click on the icon to open it, the loading cursor will appear for a few seconds but then nothing else (I've also tried running it as administrator, but the result is the same). I then went to try and uninstall and then reinstall it, but when the uninstaller runs it says that Firefox is running and I need to close it first. However, opening task manager reveals that Firefox is not running, so there is nothing for me to close despite the message telling me to do so.

Firefox was working fine until I restarted my PC today (which runs Windows 7 Ultimate), and now it won't open no matter how many times I click the taskbar icon or the Start Menu/desktop shortcut.

One popular fix I noticed while troubleshooting is to reset Firefox by holding shift while opening the program, then selecting the "reset" option. Holding shift while I try to open it does nothing.

I tried restarting my PC multiple times, and tried starting it up in Safe Mode with Networking. I've also uninstalled and reinstalled Firefox twice. Same problem.

Any suggestions? Thank you.

I had Firefox Developer Edition running for ages. Always kept it up to-date. Now the latest update made it stop working AT ALL. There is nothing. The executable pops up in Taskmanager for a split second and then its gone.

I went back to beta. Worked for a couple days. Now an update came in: BAM! same thing! Now I have 2 broken Firefoxes on my PC.

Not even running the Profile manager worked!!

Back to standard version: Works