Using Azure Security Center and I have most of my VMs showing an informational warning regarding their System Updates. When I go into them, they don't have any recent data. There is recent data for the OS Vulnerability column, so I know the connection is working, but this data isn't showing up.
What is the mechanism used to scan these for updates? Do I need Windows Update service to be started and Automatic, or anything like that? All my VMs are Windows 2012 or 2012R2, including the few that do appear to be working correctly.