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How to disable e10s in Firefox Developer Edition?

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I recently got a notification balloon in Firefox Developer Edition 40.02a asking if I wanted to turn on e10s. I decided to, but discovered that e10s broke many of my frequently visited sites and plugins (which I have reported already). According to https://wiki.mozilla.org/Electrolysis, I should see an option to turn off e10s in my browser preferences page, but there is no checkbox for that. How do I turn off e10s without having to refresh my browser completely?

I recently got a notification balloon in Firefox Developer Edition 40.02a asking if I wanted to turn on e10s. I decided to, but discovered that e10s broke many of my frequently visited sites and plugins (which I have reported already). According to https://wiki.mozilla.org/Electrolysis, I should see an option to turn off e10s in my browser preferences page, but there is no checkbox for that. How do I turn off e10s without having to refresh my browser completely?

Chosen solution

Note that you only see this check box on the about:preferences page.

That option toggles this pref:

  • browser.tabs.remote.autostart
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ideato 893 solutions 6250 answers

Helpful Reply

Hi, in Options > General > Startup > Enable multi-process Nightly don't have a check box ?

thank you


EDIT, sorry i check the Nightly, the "Enable multi-process firefox Developer Edition" is the correct one.

Hi, in Options > General > Startup > '''Enable multi-process Nightly''' don't have a check box ? thank you '''EDIT''', sorry i check the Nightly, the "Enable multi-process firefox Developer Edition" is the correct one.

Modified by ideato

cor-el
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Chosen Solution

Note that you only see this check box on the about:preferences page.

That option toggles this pref:

  • browser.tabs.remote.autostart
Note that you only see this check box on the about:preferences page. That option toggles this pref: *browser.tabs.remote.autostart