Microsoft providing free antimalware, Microsoft Security Essentials for Genuine windows Operating system users. MSE will provide real-time protection from threats and does offer basic protection much like AVG, Avast and other security vendors offering till now. Microsoft released Microsoft Fix It tool for MSE which completely removes Microsoft Security Essentials from your Computer. And Microsoft also added support article to their knowledge base on how to manually uninstall MSE from your Computer apart from release of Fix It tool for MSE.
If you are unable to uninstall MSE from Add or Remove Programs or from Programs and Features in Windows Vista /7 from in Control Panel, then only you should use manual MSE uninstall method or Fix It tool offered by Microsoft for MSE.
Manually uninstalling Microsoft Security Essentials
Manually uninstalling MSE needs to edit registry which is tough task on part of user.However you can use knowledgebase article provided by Microsoft to do that.
Microsoft Fix It tool for Microsoft Security Essentials
1.Download Microsoft Fix It tool for MSE .
2.Run the tool, follow the instructions in the wizard.