How do I remove all trace of Microsoft Security Essentials?

To remove all trace of Microsoft Security Essentials, first uninstall it through the Control Panel by navigating to "Programs and Features" and selecting "Microsoft Security Essentials." After uninstallation, use the Microsoft Security Essentials Removal Tool to ensure all components are completely deleted. Finally, check for any remaining files or folders in the installation directory (usually in "C:\Program Files\Microsoft Security Client") and delete them manually, as well as any related registry entries using a registry cleaner.