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.

Avatar for Username

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

This thread was archived. Əgər kömək lazımdırsa lütfən yeni sual verin.

Why cant I even start Firefox?

  • 1 cavab
  • 2 have this problem
  • 9 views
  • Last reply by cor-el

danaleong
danaleong
more options

This problem happened when I updated Firefox. The server crashed and could not even be opened to the startup page.

The mozilla Crash reporter is always shown.

I have deleted the software and re-downloading firefox several times but failed.

The same crash reporter is shown everytime I reinstall firefox.

It is impossible to open firefox at all!

This problem happened when I updated Firefox. The server crashed and could not even be opened to the startup page. The mozilla Crash reporter is always shown. I have deleted the software and re-downloading firefox several times but failed. The same crash reporter is shown everytime I reinstall firefox. It is impossible to open firefox at all!

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.

Delete the files sessionstore.js [2] and sessionstore.bak in the Firefox Profile Folder.

If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well. Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).

See also: