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!

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.

FireFox 5 Claims it is already running on Open -Win7

  • 1 reply
  • 4 have this problem
  • 3 views
  • Last reply by dynamite

dwarnerco
dwarnerco
more options

Setting up a new DELL Win7 Prof. System. Downloaded latest 5.x. Ran fine once. Now upon clicking the Firefox Icon get the following window 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."

- No firefox labeled process shows in task manager. - Re-start same message. - Uninstall/ reinstall same message. No Joy.........

Setting up a new DELL Win7 Prof. System. Downloaded latest 5.x. Ran fine once. Now upon clicking the Firefox Icon get the following window 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." - No firefox labeled process shows in task manager. - Re-start same message. - Uninstall/ reinstall same message. No Joy.........

All Replies (1)

dynamite
dynamite
more options

See if the solutions given in this article help: "Firefox is already running but is not responding" error - How to fix.