Looks like your PC was shut down before Outlook closed ... this is a known problem acknowledged by MS ... Outlook sometimes will not close when you exit the program.
and / or
Some types of programs will cause Outlook to remain running,most often Fax software, anti-spam or anti-virus software, or PDA sync software. However, the culprit on your computer may be a different program. Once you identify the program that is causing Outlook to remain loaded, check their support site for updates or additional information.
MS has a "hotfix" but you'll need to call them ...