Download Microsoft Security Essentials-very useful

Microsoft Security Essentials is out of beta and is now available for download.

Microsoft Security Essentials v 1.0.1611.0 is a free download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple.

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software

Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.

HomePage: Microsoft Security Essentials.

Rest assured, its one fine product !  Do also check out Microsoft Security Essentials – FAQ