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Mozilla Browser FAQ

Last updated on December 7, 2004.

Mozilla used to give me a confirmation window, when I'd close a window with more than one tab. Now it doesn't ask. How can I get it back?

Add the following line to your user.js file:

user_pref("browser.tabs.warnOnClose", true);

Or you can enter about:config in the location bar.
Search for the preference browser.tabs.warnOnClose.
Modify the value to true.

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