Microsoft Security Essentials 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 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.
- Comprehensive malware protection
- Simple, free download*
- Automatic updates
- Easy to use
Microsoft Security
Essentials is available in many locales and languages. To download
Microsoft Security Essentials, choose your preferred locale or language
from the list below. Next, choose your operating system to begin the
download process. If you’re unsure which operating system you have,
please visit Microsoft Support.
