Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Can't start Firefox since installing to 12 (crash)

  • 1 reply
  • 24 have this problem
  • 7 views
  • Last reply by cor-el

more options

I updated to version 12 and since then can not start Firefox at all, it instantly crashes. I don't understand how I can get it to start in "safe-mode" when it doesn't star at all, so I can't get into options to disable plug-ins... could someone provide "for dummies" instructions?

Any tips on fixing this? On the crash report, it says the crash reason is EXCEPTION_ACCESS_VIOLATION_WRITE.

I updated to version 12 and since then can not start Firefox at all, it instantly crashes. I don't understand how I can get it to start in "safe-mode" when it doesn't star at all, so I can't get into options to disable plug-ins... could someone provide "for dummies" instructions? Any tips on fixing this? On the crash report, it says the crash reason is EXCEPTION_ACCESS_VIOLATION_WRITE.

All Replies (1)

more options

Looks like a problem with cookies.

Try to rename cookies.sqlite to cookies.sqlite.sav and delete a possible cookies.sqlite-journal in the Firefox Profile Folder in case that the file that stores the cookies is corrupted.

See http://kb.mozillazine.org/Cookies (Removing cookies)

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder

See also: