We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

closed tabs keep running in the background

  • 2 cavab
  • 0 have this problem
  • 1 view
  • Last reply by cor-el

more options

When I close tabs, and the computer stops working and I check the Task manager it turns out that firefox still runs 20-30tabs in the background when most of then have been closed and have just 4 running!!!

This occupies 100% of disk and CPU, and thw laptop stops functioning and freezes!!!!!!

And this happens all the time! How do we make firefox actualy close the tabs properly?? Without having to dig through task managerto close them again one by one?

When I close tabs, and the computer stops working and I check the Task manager it turns out that firefox still runs 20-30tabs in the background when most of then have been closed and have just 4 running!!! This occupies 100% of disk and CPU, and thw laptop stops functioning and freezes!!!!!! And this happens all the time! How do we make firefox actualy close the tabs properly?? Without having to dig through task managerto close them again one by one?

All Replies (2)

more options

Windows Task manager doesn't show tabs, just processes.

more options

You can check the about:memory and about:processes pages for info about all Firefox processes. See also the about:unloads page for info about the tabs.