Microsoft Security Essential's main page is very uncluttered and easy to understand. It is a snap to start a scan from here and get a quick status update.
You can easily update Microsoft Security Essentials from the application, or you can rely on its periodic updates that it automatically performs.
Here, you can get a list of all of the problems that Microsoft Security Essentials has found.
Changing the schedule for system scans is very easy.
Microsoft Security Essentials allows you to configure how it handles threats based on their severity.
It also allows you to configure its behavior for the real-time protection.
The "Advanced" settings screen has some very useful items in it. I particularly appreciated that it can create a system restore point before performing the scan.
This is the Windows 7 "Action Center" showing that Microsoft Security Essentials is protecting my computer.
Justin James is the Lead Architect for Conigent.