How to Prevent Mozilla Firefox Window Close After Closing Last Tab

By default, Firefox browser closes when the last tab is closed which sometimes can be frustrating especially when you are on something important and basically haven’t enabled the Restore Last Session Option.

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mozilla firefox auto close

Have you ever been in a situation where you want to close a tab on Mozilla browser unknowingly that it is the last tab, and it automatically closes? By default, Firefox browser closes when the last tab is closed which sometimes can be frustrating especially when you are on something important and basically haven’t enabled the Restore Last Session Option. To make sure this doesn’t happen again, follow the instructions below;

  • Open the Mozilla browser address bar, type in about:config and hit enter on the keyboard.

Mozilla Configuration

  • On the new page that will load, click on I accept the risk!

Warranty Void

  • Copy the line of text below and paste into the search bar

browser.tabs.closeWindowWithLastTab

Last Tab

  • Once you have located that line of text above, double click on it to change its value from true to false.

Mozilla Browser about:config

  • Finally restart the browser by closing and re-opening it.

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