This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Firefox will not start, will not open in safe mode, and still will not work after clean reinstall, Mac/OSX

  • 1 reply
  • 2 have this problem
  • 1 view
  • Last reply by ideato

more options

One moment I was using Firefox the same as I always have. The only difference was that I changed the preferences to erase history when quitting Firefox. When trying to open the program again, it is immediately unresponsive. I attempted opening it in safe mode and a window will appear but never load, and Firefox remains unresponsive. I could not reset Firefox either. I deleted the application and re-downloaded Firefox, but it changed nothing. I am in OSX 10.7.4. Can anyone help?

One moment I was using Firefox the same as I always have. The only difference was that I changed the preferences to erase history when quitting Firefox. When trying to open the program again, it is immediately unresponsive. I attempted opening it in safe mode and a window will appear but never load, and Firefox remains unresponsive. I could not reset Firefox either. I deleted the application and re-downloaded Firefox, but it changed nothing. I am in OSX 10.7.4. Can anyone help?

All Replies (1)

more options

Hello chillman4130, try to create a new profile(in case that you profile is corrupted), go (with closed firefox...... it is anyway) to /Applications/Utilities > Open the Terminal application > in the Terminal application, enter the following:

  • /Applications/Firefox.app/Contents/MacOS/firefox-bin -p

Press Return

the above opens Profile Manager, if the profile manager open then see : Creating a profile

then see: Recovering important data from an old profile

http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox


thank you