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

As soon as Firefox opens, it starts increasing memory usage until it maxes out, and it won't actually close unless I end the process in the task manager.

  • 1 cavab
  • 20 have this problem
  • 2 views
  • Last reply by cor-el

more options

Even if I'm not doing anything, no matter how few tabs I have open, Firefox will slowly increase in memory (RAM) usage until it's using nearly 100% of my computer's RAM, and everything basically freezes. Even when I close the window, the process continues to run, and I have to end the process in the task manager in order to get it to stop using RAM. I've tried disabling all my add-ons, and that does not help.

Even if I'm not doing anything, no matter how few tabs I have open, Firefox will slowly increase in memory (RAM) usage until it's using nearly 100% of my computer's RAM, and everything basically freezes. Even when I close the window, the process continues to run, and I have to end the process in the task manager in order to get it to stop using RAM. I've tried disabling all my add-ons, and that does not help.

All Replies (1)

more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).