This morning I received a warning from ESET that my Operating system was out of date. Sure enough upon running Windows update, there was a new "Important" update that I needed to download. After downloading and installing it, though, ESET still insisted that my OS was out of date. Looking at the detailed message in ESET revealed that ESET believed I was missing a "Critical" update still. I neglected to note which KB number it was. While I was investigating further, ESET then stopped giving me the "OS out of date" warning - though I was unable to locate which Critical Update it was talking about, and only an "Important" update was installed. Do ESET and Windows update refer to updates with different classifications? And further, is it possible for me to see which updates ESET wants me to install even in the absence of the "Out of Date" warning? I'm trying to discern if ESET was just a little slow in understanding the updates were applied, and the "Important" update was the one ESET wanted - Or if something more sinister is going on, and something is hiding updates from me in Windows Update.