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

  • 6 valiny
  • 2 manana an'ity olana ity
  • 32 views
  • Valiny farany nomen'i Bill H

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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)

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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

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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

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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.

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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.

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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\"

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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.