The minimum requirements in order to run Windows Defender are -
1)Microsoft Internet Explorer 6 or a later version
2) An Intel Pentium 233-megahertz (MHz) or higher processor, Pentium III recommended
3)At least 64 megabytes (MB) of RAM
4)Microsoft Windows XP Service Pack 2 or a later version, or Microsoft Windows Server 2003 Service Pack 1 or a later version
5)20 MB of available hard disk space
6)Internet access with a connection speed of at least 28.8 kilobits per second (Kbps)
Please make a note of installation of latest updates from the support department of microsoft before installation of windows defender in order to run it smoothly.
