: Click the Start button and select Control Panel .
If the standard uninstallation fails due to errors or corrupted files, a dedicated removal tool can help clear leftover registry entries and system files. Microsoft Security Essentials Removal Tool Download
: Highlight the program and click the Uninstall button. Follow the on-screen prompts. : Click the Start button and select Control Panel
: Once complete, restart your computer to ensure all background processes are terminated. Using specialized Removal Tools Microsoft Security Essentials Removal Tool Download
: This specialized utility is designed to force-remove all traces of MSE when the standard Control Panel method is unsuccessful. It is primarily compatible with Windows XP, Vista, and 7.
: Locate Microsoft Security Essentials in the list of installed applications.