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How do I set my Options in Tabs to ask before closing tabs when option is not there?

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  • 3 have this problem
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  • Last reply by cor-el

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I would like to setup Firefox to warn me before closing my window and tabs. I have looked in my setting options and I don't have the option. What do I do?

I would like to setup Firefox to warn me before closing my window and tabs. I have looked in my setting options and I don't have the option. What do I do?
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Modified by nansoula22

All Replies (5)

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The Tab warn items in "Options/Preferences > General or Tabs" are hidden when the related prefs have the default value and warnings are enabled. They only show when you toggle the related prefs on the about:config page. Note that this may require to close and restart Firefox.

  • "Warn me when closing multiple tabs" (browser.tabs.warnOnClose: true)
  • "Warn me when opening multiple tabs might slow down Firefox" (browser.tabs.warnOnOpen: true)

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

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I tried this and it work once and now it won't work again. I toggled the "warn me" tasks and it still is not working.

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What is the startup setting?

When you use "Show my windows and tabs from last time" then Firefox might not show a warning. You would have to use one of the other two choices.

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Everything is on default. I set the command as you described and then clicked on "Warn before closing tabs" then I closed the widows.. no warning. Then when I go back to options the "Warn before closing tabs" task is not there anymore

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The warn items in "Tools > Options > General" are hidden once you have set them to their default value to warn you.

Do any of the warn prefs have a non default setting if you search for warn on the about:config page?

Try to set browser.showQuitWarning to true.