After a Windows system update, my usual first step has been to open Firefox and restore previous session. I am an old person and have had some memory difficulties in recent years so some of the pages I'd kept open on the taskbar icon had been there for as much as two or more years, but they always came back. After the most recent Windows update, the first thing that happened was that a message from McAfee (to which I subscribe) popped up. It was a very good 'Come-on," so I clicked it. It took me through doing some scans, then pitched a product that I didn't want to purchase so I closed that window. That resulted in a new, Firefox window opening, pitching the same product again. I now don't remember if I closed that pitch window and opened a new Firefox one before trying to restore previous session or if I tried the restore directly from that window but whichever I did, the only window that got restored was that latest McAfee pitch! Is there any way to get back the old stored Firefox pages from before the system update and my opening that McAfee window? Thank you very much.