Search Support

Beware of phishing attacks: Mozilla will never ask you to call a number or visit a non-Mozilla website. Please ignore such requests.

Learn More

When I want to open the Firefox after closing it, It says "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".

  • 1 reply
  • 11 have this problem
  • 1 view
  • Last reply by cor-el

more options

So, I always have to go to the Task Manager and end the process. Why does it happen? How can I fix it? Thanks a lot.

All Replies (1)

more options