Legacy Update: Get back online, activate, and install updates on your legacy Windows PC

This paper describes the technologies that Microsoft uses to combat malware. A core technology is the antimalware engine, a component that works with many Microsoft products and services. The antimalware engine scans client computers for signs of malware at every possible level of infection, from the browser or application level down to system files. These technologies form part of a larger Microsoft antimalware effort that includes uniform deployment of updates and innovative technology that helps prevent exploitation of software vulnerabilities.These technologies are supported by the efforts of the Microsoft Malware Protection Center (MMPC), which constantly accrues and analyzes global data to help protect Microsoft customers.

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Status: Deleted This download is no longer available on microsoft.com. The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to January 2013.

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Supported operating systems: Windows 7, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP

Any supported operating system.

Download the Introducing Microsoft Antimalware Technologies whitepaper, available in PDF or XPS format.