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

I have FIVE Firefox's running in Task Manager and it freezes how do i stop this.

  • 6 replies
  • 2 have this problem
  • 51 views
  • Last reply by Bill H

more options

I have FIVE Firefox's running in Task Manager some times six or seven eats up all memory and it freezes, when it freezes i have to go to Task Manager to shut them down. now what. This happened two years ago and i found a fix on the net and it worked. i did the same thing and this time and it did not work. how do i stop this.

I have FIVE Firefox's running in Task Manager some times six or seven eats up all memory and it freezes, when it freezes i have to go to Task Manager to shut them down. now what. This happened two years ago and i found a fix on the net and it worked. i did the same thing and this time and it did not work. how do i stop this.

All Replies (6)

more options

Hi toride, If you're looking in Windows Task Manager, that will show you the processes which Firefox needs for stable operation. See this : Multi-Process Firefox: everything you need to know

Use Firefox's Task Manager to get a better idea of what is gobbling up resources and causing it to freeze: Task Manager - see what tabs or extensions are slowing down Firefox

more options

It is Windows Task Manager not Firefox Task Manager. and it is Firefox that eating all the ram. this just started to happened four days ago. to day is 7/18/2019 Thank You

more options

I have the same problem, especially when I come off a VPN. I close all active tasks, then there are always three background tasks, one of which can only be closed by rebooting the computer. This has been happening for weeks. I just literally downloaded the latest version of Firefox after a clean removal using Revo. About fed up with Firefox and it's constant problems.

more options

I have the same problem. So is there anyway now to stop multiple Firefox's running? If there isn't I have to stop using Firefox and after many years use.

more options

Hello All,

You can set an environment variable to disable multi-process. :
• set MOZ_FORCE_DISABLE_E10S=1
How to set environment variables : http://www.computerhope.com/issues/ch000549.htm

You can use the set command to create a temporary environment variable.

  • open command prompt window
  • change to installation directory
  • type "set MOZ_FORCE_DISABLE_E10S=1" and press enter
  • type "firefox.exe" and press enter

How to use set command : http://www.computerhope.com/sethlp.htm


Or you could set an environment variable in the Windows Control Panel => System.
You can create a firefox-e10s.cmd file with this content:
set MOZ_FORCE_DISABLE_E10S=1 start "" "<path_to_firefox>\firefox.exe"
• (64-bit Firefox) "C:\Program Files\Mozilla Firefox\" • (32-bit Firefox) "C:\Program Files (x86)\Mozilla Firefox\"

more options

I had that and other issues with Firefox. I finally gave up and moved to Edge. It's not perfect, but doesn't have all the issues that Firefox had through last week.