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Firefox won't open; tried all I found on this site; can't get in to disable add-ons.

Posted

Firefox will not open. Little wheel spins, then disappears. Nothing. Re-started computer - several times. Reinstalled Firefox. Nothing. Can't open in Admin. Can't open with double click or with right-click "Open". Many fixes on this site suggest going to the Firefox button to disable add-ons - of which I have few - however since Firefox won't start, I can't try these options. Can't get to my profile. (Have not changed my profile or add-ons for ages.) This seems to have happened right after the most recent update. I've read everything I can find on this website and other places, and can't make it work. Can't find old Firefox on program list, thus can't uninstall old version - perhaps this occurred automatically with new Firefox download?. Ran Spybot and deleted some adware and mal-ware. Still nothing. Ran Microsoft Security - nothing. I'm running Windows 7. I can't open the troubleshooting file offered below. Firefox was working well until yesterday. Sigh. Can anyone help with this?

Chosen solution

You can use one of these to start Firefox in Safe Mode:

  • On Windows, hold down the Shift key while starting Firefox with a double-click on the Firefox desktop shortcut
  • On Mac, hold down the Options key while starting Firefox
  • Help > Restart with Add-ons Disabled

Create a new profile as a test to check if your current profile is causing the problems.

Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.

  • Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you lose personal data like bookmarks and passwords from profiles of other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.

If you keep having problems then also create a new profile.



Do a malware check with some malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.

Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also:

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Additional System Details

Application

  • User Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; HPDTDF; .NET4.0C)

More Information

the-edmeister
  • Top 10 Contributor
  • Moderator
3197 solutions 24404 answers

And you can't open the Firefox SafeMode?
https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

cor-el
  • Top 10 Contributor
  • Moderator
10756 solutions 96800 answers

Boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

Question owner

Nope, can't even open in safe mode...

Question owner

Tried that and it didn't work. I pressed F8 at the screen that shows some F-key options at the bottom. Hope that's the "boot screen".

Question owner

Keep getting a message that says "A script on this page may be busy or it may have stopped responding." Neither Continue nor Stop Script help.

Then it says: Script: resource://gre/components/nsBlocklistService.js:771

or sometimes it says: Script: chrome://cloudmagic/content/bg.plugin.frame.html:45

Question owner

Holy cow! It just opened - I have no idea why - then I got THIS error: Error: Illegal operation on WrappedNative prototype object

That error box would only go away with a bunch of clicks.

Do you think it's fixed?

Will look at add-ons if poss.

cor-el
  • Top 10 Contributor
  • Moderator
10756 solutions 96800 answers

Chosen Solution

You can use one of these to start Firefox in Safe Mode:

  • On Windows, hold down the Shift key while starting Firefox with a double-click on the Firefox desktop shortcut
  • On Mac, hold down the Options key while starting Firefox
  • Help > Restart with Add-ons Disabled

Create a new profile as a test to check if your current profile is causing the problems.

Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.

  • Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you lose personal data like bookmarks and passwords from profiles of other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.

If you keep having problems then also create a new profile.



Do a malware check with some malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.

Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also: