How to Enable Save Tabs on Exit for Firefox 4

Before I upgraded my laptop SSD hard drive, I could not keep many tabs open in Firefox, because it takes a huge amount of memory and slows to crawl my laptop. So what I normally only reminder of interesting places in the text file and visit again when I have time. SSD now, it all happened so quickly and I no longer need to close tabs. Every time I close Firefox 3, I click “Save and Quit” button if I have received “Do you want Firefox to save your tabs for the next time it starts?” When you restart Firefox 3, all the tabs open automatically.
Firefox has just released final four, and in fact I downloaded and installed the day before, because the setup installer is already in the Mozilla server. Upgrade to Firefox 3, Thunderbird 4 is very simple. Everything you need to do is to install Firefox 4 file (Firefox Setup 4.0.exe) run and it will be automatically updated, because there is no need to remove Firefox 3 first. After the upgrade, I immediately noticed that Firefox 4 will no longer prompted a save on exit, and just to warn me, “You are about to close X tabs. Are you sure you want to continue?” It is simply a check box’s to warn me when I try to close multiple tabs.

Fortunately, save, modify killing Firefox 4 is not removed, and it is disabled by default. There is no need to use add-on or extension of this feature. Not sure why the Firefox developers decided, but here’s how to save the closure of the tabs in Firefox.

1. Type about:config in the address bar and press Enter.

2. Click on
I’ll be careful, I promise!” Button

3. On the filter bar, type browser.showQuitWarning and press Enter.

4. You can either double-click it, change the value from false to true, or right click and select Modify.

This change takes effect immediately, without restarting Firefox. Now try to open, close Firefox 4 is a series of tabs and you will be prompted to save a.

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