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.

since upgrade to 4.0.1, firefox does not shut down properly. To reload it, I have to go to task manger and disable it.

  • 2 replies
  • 33 have this problem
  • 4 views
  • Last reply by onetimedeal

John Clarke
John Clarke
more options

Since upgrade to 4.0.1, Firefox does not shut down completely. When I try to reload it after shutdown I get the message: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." I have to disable Firefox with Task manager to get to open it again. Thanks for any advice.

Since upgrade to 4.0.1, Firefox does not shut down completely. When I try to reload it after shutdown I get the message: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." I have to disable Firefox with Task manager to get to open it again. Thanks for any advice.

All Replies (2)

the-edmeister
the-edmeister
  • Moderator
more options

https://support.mozilla.com/en-US/kb/Firefox%20hangs
See hang-at-exit

onetimedeal
onetimedeal
more options

Edit: problem reoccured

Modified by onetimedeal