How can I automatically save my tabs when I close (not quit) firefox on my mac? When I close it (by pressing the red x on the top left of my browser, or by doing cmd+w, and reopen it, I don't have my tabs. There is no restore button when my browser opens. It does not automatically restore my old tabs (I've set it to that setting in my preferences "when my browser starts"). I cannot restore my old session through History either (I can by opening closed windows or tabs, I think, but the restore button doesn't work - in any case, I don't want to have to do this. I want it to be automatic). However, if I quit (emphasis) firefox then everything is restored just fine. But how can I do this when I close it!? I don't want to be able to loose all of my information by accidentally closing my browser.