Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

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

my firefox is all ready close but in systems task manager allready in prossess

  • 3 respostas
  • 2 have this problem
  • 15 views
  • Last reply by cor-el

more options

my firefox is all ready close but in systems task manager allready in prossess then after i open my firefox error in dilouge box firefox allready running and i try to my system restart but my system dose not restart then after i switch of power sypply then my system is start.

my firefox is all ready close but in systems task manager allready in prossess then after i open my firefox error in dilouge box firefox allready running and i try to my system restart but my system dose not restart then after i switch of power sypply then my system is start.

All Replies (3)

more options

Hi kuldipchhatrala ,

I understand that when you start Firefox that there is a message that says its already running and that you are still seeing Firefox open in the Task Manager. I am happy to help. 

So far this happens when Firefox did not shut down properly and that as a result there is a .lock file in the user profile. Please feel free to remove this in your user profile: Profiles - Where Firefox stores your bookmarks, passwords and other user data

more options

Do you have the Firefox icon on your quick launch? Right click on it, and select Open New Window. Sometimes this works. If it opens, close it by Menu > File > Exit.


This is not a cure but will make it easier if Firefox locks up in Windows. https://support.mozilla.org/questions/997866 {web link}

more options

Use one of these to close Firefox if you are currently doing that by clicking the close X on the Firefox title bar.

  • "3-bar" menu button > Exit (Power button)
  • Windows: File > Exit
  • Mac: Firefox > Quit Firefox
  • Linux: File > Quit