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Mozilla opens multiple exe processes even after setting dom.ipc.processCount to 1, and browser.tabs.remote.autostart to false. Any ideas?

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Title says it all.. I've made and included 'C:\Program Files\Mozilla Firefox\firefox-e10s' in the 'Path' system variable as others suggested, but I still get multiple processes.. Any other ideas?

Using Firefox 68.

Title says it all.. I've made and included 'C:\Program Files\Mozilla Firefox\firefox-e10s' in the 'Path' system variable as others suggested, but I still get multiple processes.. Any other ideas? Using Firefox 68.
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McCoy
  • Top 10 Contributor
488 solutions 4491 answers

Hello itomi,

You can no longer disable e10s (multiple-proces) on the "about:config" page - see :

https://www.ghacks.net/2019/05/17/going-forward-multi-process-cant-be-turned-off-anymore-in-firefox/

And also :

https://techdows.com/2019/05/mozilla-firefox-68-doesnt-allow-turning-off-e10s.html

If however, you really want to disable it, 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

Hello itomi, You can no longer disable e10s (multiple-proces) on the "about:config" page - see : https://www.ghacks.net/2019/05/17/going-forward-multi-process-cant-be-turned-off-anymore-in-firefox/ And also : https://techdows.com/2019/05/mozilla-firefox-68-doesnt-allow-turning-off-e10s.html If however, you really want to disable it, you can set an environment variable to disable multi-process. :<BR> • set MOZ_FORCE_DISABLE_E10S=1<BR> 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
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Question owner

Hi McCoy! Thanks for the advice, but that's exactly what I did - made a firefox-e10s.cmd file with only content 'set MOZ_FORCE_DISABLE_E10S=1' and then added that file to the path. That didn't help.

Hi McCoy! Thanks for the advice, but that's exactly what I did - made a firefox-e10s.cmd file with only content 'set MOZ_FORCE_DISABLE_E10S=1' and then added that file to the path. That didn't help.
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