This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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 not in task manager, can't close cleanly

  • 2 replies
  • 1 has this problem
  • 5 views
  • Last reply by cor-el

more options

Let me first state that I AM NOT having the "Firefox is already running but not responding" issue. This is my problem:

I exit Firefox, and no matter what, every single time I open it, it opens the last tabs I had open. I've tried to kill the process in task manager but it doesn't show up in the processes list. I've tried Firefox > Exit, creating a new profile, restarting my computer (yes, even restarting my computer doesn't get rid of my previously open tabs!), running the places maintenance addon, and resetting Firefox. None of these things have helped. I have searched extensively on these forums, Google, and Reddit, to no avail. Can someone PLEASE help me?

Let me first state that I AM NOT having the "Firefox is already running but not responding" issue. This is my problem: I exit Firefox, and no matter what, every single time I open it, it opens the last tabs I had open. I've tried to kill the process in task manager but it doesn't show up in the processes list. I've tried Firefox > Exit, creating a new profile, restarting my computer (yes, even restarting my computer doesn't get rid of my previously open tabs!), running the places maintenance addon, and resetting Firefox. None of these things have helped. I have searched extensively on these forums, Google, and Reddit, to no avail. Can someone PLEASE help me?

All Replies (2)

more options

Modified by iamjayakumars

more options

You can check if you have an user.js file in the Firefox profile folder that sets the browser.sessionstore.resume_session_once pref to true.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)