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. Please ask a new question if you need help.

I can't get Firefox to open on my computer. I've been using it for a year and a half with no problems until now. I keep getting the following "Unresponsive script" error message: Script: resource:///components/nsHandlerService.js:432 How do I fix this?

  • 2 replies
  • 15 have this problem
  • 4 views
  • Last reply by cor-el

foodiedave
foodiedave
more options

Unresponsive script error message keeps popping up, Firefox will not open.

Unresponsive script error message keeps popping up, Firefox will not open.

All Replies (2)

David McRitchie
David McRitchie
more options

see http://kb.mozillazine.org/Unresponsive_Script_Warning

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

Try to delete the mimeTypes.rdf file in the Firefox Profile Folder.

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

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