Microsoft Security Essentials is world-class security for
your PC that's free* and easy to download. Here are some ways Microsoft
Security Essentials helps keep your PCs safe without getting in your way or
making you worry.
Real-time protection
System scanning
System cleaning
Windows Firewall integration
Dynamic signature service
Rootkit protection
Protection against real threats, not good software
Microsoft Security Essentials is
free* and easy to download. Here's what you need to run it:
Operating System: Windows XP
Service Pack 3 (SP3)*; Windows Vista (Service Pack 1, or Service Pack 2)*;
Windows 7*
- For Windows XP, a PC with a CPU clock speed of 500
MHz or higher, and 256 MB RAM or higher.
- For Windows Vista and 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.
- As of April 8, 2014, technical support for
Windows XP and Windows XP Mode are no longer available,
including updates that help protect your PC.
