To get the "pro"-previous tab open, no. To find it and open it again(if you have not select to delete browsing history when closing firefox) yes, click Ctrl+Shift+H in keyboard (Cmd+Shift+H on Mac) to open LIBRARY menu click HISTORY and select the browsing day.

see for more info : Viewing the browsing history - Firefox

thank you

Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Some of the tabs I've had open for days and even a couple weeks. Going through all that history to find the pages lost would be very difficult. I usually leave Firefox open and put my system to sleep or hibernate. Is there really no way to recover the tabs that were open before the update this morning?

You can check the Firefox Profile Folder to see if there are any files sessionstore-##.js [3] files with a number present.

• Help > Troubleshooting Information > Profile Directory: Open Containing Folder

If you see any with a date and time of around that update/restart then try to rename the file to sessionstore.js to see if that brings back the session.

See also:

• [1] http://kb.mozillazine.org/Session_Restore
• [2] http://kb.mozillazine.org/sessionstore.js
• [3] http://kb.mozillazine.org/Multiple_profile_files_created

• http://kb.mozillazine.org/Profile_folder_-_Firefox

Thanks very much for both of your suggestions.

ideato - I will make use of this suggestion in the future. I didn't know about it and think it will save me headaches in the future.

cor-el - Thanks for the links and the info about that script. I didn't find anything concurrent with the update, so I'm out of luck there. I did find one from a couple days ago and that should help some.