How do I recover a file not saved - auto reboot?
 

I had a file I was workinng on in excel - forgot to save it before going to
bed. The computer downloaded a security update and rebooted. I can't seem
to figure out the document recovery - does excel automatically save the file
for me prior to shutting down for this reboot? If so, how do I find it - I
opened the file but it's the older version - thanks in advance to anyone
offering solution here.