Thanks for the feedback. You make an interesting point, but everything I did leading up to scheduling the scan seems to indicate a scan should have taken place. Also, if you can read my screenshot, the information in the text box below indicates my scan was completed satisfactorily, and does not mention definition updates. In addition, when I check Defender’s “Last Scan” screen, it indicates a full system scan was performed at 4:00 a.m.
Usually, when I scan for definition updates, I get a reply that updates are current or I need to update.