Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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 issue

  • 3 replies
  • 0 have this problem
  • 13 views
  • Last reply by cor-el

more options

Hi, I just want to ask why every time I used Firefox browser on my PC then open my Task manager the Firefox in processes tab have 10 more counts even I didn't open any website and add tab. Please kindly check my screenshot. Hope to get feedback on your team. Thanks..

Hi, I just want to ask why every time I used Firefox browser on my PC then open my Task manager the Firefox in processes tab have 10 more counts even I didn't open any website and add tab. Please kindly check my screenshot. Hope to get feedback on your team. Thanks..
Attached screenshots

All Replies (3)

more options
more options
more options

It is quite normal to see more Firefox processes running.

  • process for the main Firefox thread (user interface)
  • one or more content processes
    you see more content processes when Fission is enabled
  • process for the compositor thread
  • process for extensions
  • process for WebRender when this feature is enabled

You can find the current multi-process state on the Troubleshooting Information page (about:support).

  • "Help -> Troubleshooting Information"
    "Application Basics":<be>Multiprocess Windows and Fission Windows
    "Remote Processes" (Web Content)

You can check the about:memory and about:processes pages for info about all processes. There are several toolkit.aboutProcesses prefs on the about:config page to show more info. See also the about:unloads page for info about the tabs.