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

How to fix:: "FF is already running..but not resp., first close or restart"

  • 1 reply
  • 67 have this problem
  • 5 views
  • Last reply by cor-el

more options

If after closing FF I attempt to open it again 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 wait a few minutes before I can access the internet again with FF. Even if "Task Manager" closes FF, it won't close. Most annoying.

If after closing FF I attempt to open it again 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 wait a few minutes before I can access the internet again with FF. Even if "Task Manager" closes FF, it won't close. Most annoying.

All Replies (1)

more options