Hi, Re Firefox browser how do you get back 2 windows with tabs that disappeared when restarting the PC. They are not in history anymore at all, they are gone. What opened up instead after the restart, was 2 lots of Windows & tabs that just disappeared in the same way, from 3 years ago, & they reappeared on the browsers. Can you tell me what is going on please & how to fix this problem in losing them in the first place? This problem has happened several times before & is very upsetting. Can you help in finding my recent loss of windows/tabs please? Regards Doug