When you have
Microsoft Security Essentials (MSE) installed, it adds
"Scan with Microsoft Security Essentials" to the context menu of files, folders, and drives by default to make it easier to scan them on demand.
This tutorial will show you how to add or remove
"Scan with Microsoft Security Essentials" from the context menu of all users in
XP (SP3),
Vista, and
Windows 7.
You must be logged in as an
administrator to be able to do the steps in this tutorial.