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

Error while attempting to run FireFox on Mac

  • 2 replies
  • 1 has this problem
  • Last reply by SS1

more options

I need assistance with my mac. Each time I try to open up Firefox browser I’m alerted that I can not run two separate instances at once. Warning says Firefox is already runing and you can not run two versions at once

All Replies (2)

more options


I am not completely sure if the commands translate, but I believe you can execute killall firefox to stop all running instances of Firefox.


more options

this didnt work however im loged into FireFox browser now so idk. i enteres killall firefox in terminal and it was unrecognized


Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.