Applies to:

Windows Server 2012 R2

Windows 8.1

Windows Server 2012

Windows 8

Windows Server 2008 R2

Windows 7

Windows Server 2008

Windows Vista

Windows Server 2003

Windows XP

Microsoft Baseline Security Analyzer 2.3 (for IT Professionals)

http://www.microsoft.com/en-us/download/details.aspx?id=7558