Microsoft Security Essentials (MSE)

How to uninstall Symantec Endpoint Protection (SEP) client silently using the command line

Repair Microsoft Security Essentials using MSE Restore Tool v1.0

http://wpkg.org/MSSecurityEssentials

http://www.winhelponline.com/blog/updating-microsoft-security-essentials-using-command-line/

http://www.appdeploy.com/packages/detail.asp?id=1647