Choosing the right Microsoft security software depends on how you're using your PC.
Most of our security software uses the same technology and offers the same level of protection.
However, enterprise software has features that are useful in a work environment, such as managing multiple computers and remote deployment.
You don’t usually need these features at home or in a small business.See the Microsoft security software page for a list of our software.
You can’t use Microsoft Security Essentials and Windows Defender at the same time, but you don’t need to - they both protect your PC from malware and other threats in exactly the same way.
Before the release of Windows 8, Windows Defender referred to a separate tool that focused only on antispyware. This tool is no longer supported, as it is now fully integrated into Microsoft Security Essentials and Windows Defender.
Windows Phone has a number of built-in security features to help keep you safe from malware and potentially unwanted software.You can read more about these security features on the Windows Phone website.
Surface and Windows RT tabletsWindows Defender is built into Windows RT to help protect you from malware and potentially unwanted software.
You should keep Windows Defender up to date to make sure you have the latest real-time protection.
I want to...