I had several tabs open that I was reading through for a couple of weeks. Or tabs that I kept there to read at a later time. The tabs change as I read and discard then find new webpages to read at a later time, that is why I had not bookmarked them. I closed the main browser window and then unbeknownst to me one of the tabs had opened a smaller dialog window. So now it only opens the one window instead of all the tabs I had opened. They were not that important, I could probably painstaking go through the history and find them if they were really important. I just wanted to know if there was a way to recover those pages easily, instead of having to laboriously go through the history and try to find. I am sure this happen all the time, but I have not seen any feature that has been added to resolve this issue. I know there is a way to recover if upgrading Firefox and if it crashes, but is there a easy way to bring up the browser session prior to closing the main browser window. I tried to go into history and tried to find an easy way to restore prior sessions, but it only finds the one window and not the list of tabs I had opened. Some of the tabs were opened in prior days or weeks, so I would not easily be able to recover the tabs. Is there a way to do this? perhaps go into the inner browser settings and find the session to make active. You can forget what I said above. I found temporary fix...as in...I dont know if it would work all the time, but it worked this time. I went into the history and found "Restore closed windows" and that seems to have worked. Could you perhaps make that one of the defaults along with "Undo close tabs" when you right click on the tab? It was not present when I right clicked on the one tab/window when it opened initially, I guess it wasnt present because of the way it was closed, so it only knew of the one tab available instead of the series of tabs I had opened for the past few days/weeks. So if you could make that change as a upgrade, it would make Firefox easier to use and more intuitive. Thank You