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How do I keep get old tabs to startup everytime I start firefox, before the Firefox 20.0.1 automatic update everything was fine but I lose all tabs now

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Before this new update, every time I close multiple tabs Firefox will ask me to save and quit. After this update I checked my settings in Options: Show my windows and tabs from last time is set, I also have keep cookies/history, and even went as far as going in to "config:about" and toggled quit warning back on with this update 20.0.1, and when I press "X" it just warns of closing multiple windows and not even save/quit. I'm very disappointed with Firefox at this moment as I've lost many important tabs that I need.

Before this new update, every time I close multiple tabs Firefox will ask me to save and quit. After this update I checked my settings in Options: Show my windows and tabs from last time is set, I also have keep cookies/history, and even went as far as going in to "config:about" and toggled quit warning back on with this update 20.0.1, and when I press "X" it just warns of closing multiple windows and not even save/quit. I'm very disappointed with Firefox at this moment as I've lost many important tabs that I need.

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In case you are using "Clear history when Firefox closes":

  • do not clear Browsing History

Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.