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

I always 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." on terying to run firefox

  • 1 balasan
  • 24 ada masalah ini
  • 2 paparan
  • Balasan terakhir oleh cor-el

more options

When I try to run Firefox 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."

No copy of firefox is running as far as I can tell. Restart and restoring system to 10 days ago did not help.

Uninstalling and downloading a new copy - but to not avail.

When I try to run Firefox 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." No copy of firefox is running as far as I can tell. Restart and restoring system to 10 days ago did not help. Uninstalling and downloading a new copy - but to not avail.

All Replies (1)

more options

See:

Do you still have a default profile?
If not then delete the file profiles.ini to make Firefox create a new default profile.

  • C:\Documents and Settings\<user>\Application Data\Mozilla\Firefox\Profiles\<profile>\