Microsoft Security Essentials system requirements

The new Windows comes with Windows Defender

Windows Defender for Windows 10, Windows 8.1 and Windows RT 8.1 provides built-in protection against malware. You can't use Microsoft Security Essentials, but you don't need to—Windows Defender is already included and ready to go. But if you’re looking to protect a PC with an older version of Windows, you can use Microsoft Security Essentials to help guard against viruses, spyware, and other malicious software. It provides real-time protection for your home or small business PCs.

Minimum system requirements for running Microsoft Security Essentials

Microsoft Security Essentials is free* and easy to download and use. Here's what you need to run it:
  • Operating System: Windows Vista (Service Pack 1 or Service Pack 2), Windows 7 
  • A PC with a CPU clock speed of 1.0 GHz or higher, and 1 GB RAM or higher.
  • VGA display of 800 × 600 or higher.
  • 200 MB of available hard disk space.
  • An Internet connection is required for installation and to download the latest virus and spyware definitions for Microsoft Security Essentials.
  • Internet Browser:
    • Windows Internet Explorer 6.0 or later
    • Mozilla Firefox 2.0 or later


* Internet access fees may apply while downloading.
Properties

Article ID: 18268 - Last Review: Aug 31, 2016 - Revision: 16

Feedback