Download Microsoft Security Essentials Prerelease from Official Microsoft Download Center

The Surface family of devices

Surface devices

Original by design

Person using Power BI Desktop

Power BI

Transform data into actionable insights with dashboards and reports

Microsoft Security Essentials Prerelease

Important! Selecting a language below will dynamically change the complete page content to that language.

Language:
English
The Microsoft Security Essentials Prerelease program allows users to run the latest & greatest versions of Security Essentials before they are publicly available