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

I cannot open Firefox so decided to try and uninstall and reinstall, when the uninstall or install wizard starts I keep getting "Firefox must be closed to proceed, please close Firefox to continue" but i do not have Firefox open at all.

  • 1 cavab
  • 20 have this problem
  • 520 views
  • Last reply by Morbus

more options

Originally I was having a problem with Firefox locking up everytime I went to a website and tried to X out of it, there would be no response. Or the little box would come up with the question on whether i wanted to Quit or close tabs, I would make my choice but nothing would happen. Then yesterday I couldnt open Firefox at all, so I tried to uninstall and also reinstall but keep getting the error message "Firefox must be closed to proceed, please close Firefox" But i do not have it running anywhere, it does show in my downloaded programes, but I cant do anything with it. I am running Windows 7 on a Dell Inspiron

Originally I was having a problem with Firefox locking up everytime I went to a website and tried to X out of it, there would be no response. Or the little box would come up with the question on whether i wanted to Quit or close tabs, I would make my choice but nothing would happen. Then yesterday I couldnt open Firefox at all, so I tried to uninstall and also reinstall but keep getting the error message "Firefox must be closed to proceed, please close Firefox" But i do not have it running anywhere, it does show in my downloaded programes, but I cant do anything with it. I am running Windows 7 on a Dell Inspiron

All Replies (1)

more options

Hopefully this support article is what you need:

http://support.mozilla.com/en-US/kb/Firefox%20hangs#w_hang-at-exit