Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.

  • 1 reply
  • 3 have this problem
  • 21 views
  • Last reply by cor-el

more options

Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.

Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.

All Replies (1)

more options