Mozilla Firefox : Stop closing the Browser when last tab is closed.

I normally face a problem many times while using my browser. Sometimes I keep open the last tab and if I closed it by mistake, then my browser gets closed and it needed to launch again.

At last I found out the way to stop it in Mozilla Firefox, the config is provided by Mozilla to solve this.

It is very much easy.

1. Type about:config and then click on “I’ll be careful, I promise!” button.

2. Type “lassttab” in the search box. You will get entry as shown in image with name browser.tabs.closeWindowWithLastTab.

3. Set it value to false, if it is true, by double clicking on it.

4. Now whenever you will close the last tab, your browser will not get closed. :)

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