I'm on Linux and have been using Firefox since I switched over. The first thing I disabled was restoring tabs because I never need it/find it annoying. I noticed that every time I would restart my computer with Firefox open it would restore the session. I understand that this happens because Firefox sees it as a crash so I changed the following settings: * browser.sessionstore.resume_from_crash from `true` to `false` * browser.sessionstore.max_windows_undo from `5` to `0` * browser.sessionstore.max_tabs_undo from `25` to `0` * browser.sessionstore.max_resumed_crashes from `1` to `0` I changed those according to this guide: https://kb.mozillazine.org/Session_Restore#Completely_disabling_session_store Unfortunately any time I restart my computer with Firefox open it resumes my session. Is there any other way to turn this off? Theres no way all of these settings do nothing. I also deleted the contents of sessionstore-backups in the profile folder but it just recreates the files after a while. My goal is to be able to restart and shutdown with Firefox open and not have to worry about it restoring tabs.