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When I clos Firefox 4.0 having multiple tabs open, Ff does not ask to store those tabs to open them the next time I start Ff. In the old version 3.* that possibility was there.

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When I closed Ff in version 3.*, Ff asked me if the open tabs should be stored to ben opened the next time. So I never lost my session. In Ff 4.0.1 that question is not asked. So I lose all open pages in all tabs. What can I do to get that possibility in Ff 4.*?

When I closed Ff in version 3.*, Ff asked me if the open tabs should be stored to ben opened the next time. So I never lost my session. In Ff 4.0.1 that question is not asked. So I lose all open pages in all tabs. What can I do to get that possibility in Ff 4.*?

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Firefox now always stores the old session, and you can access it by going to the History menu and selecting "Restore Previous Session"

If you want Firefox to display the message to save the session, it can be turned back on by changing some preferences.

  1. Type about:config into the location bar and press enter
  2. Accept the warning message that appears, you will be taken to a list of preferences
  3. Locate the preference browser.tabs.warnOnClose, if its value is set to false, double-click on it to change its value to true
  4. Repeat this for these 3 preferences browser.warnOnQuit, browser.warnOnRestart and browser.showQuitWarning

If you always open the last set of tabs, an alternative approach is this:

  1. Click the orange Firefox button, then select options to open the options window
  2. Go to the General panel
  3. Change the setting "When Firefox starts" to "Show my windows and tabs from last time"