Security updates & tools

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Get the latest updates for your PC at Microsoft Update.
Microsoft Update
Protect your PC from viruses, spyware, and other malicious software.
Microsoft Security Essentials
Download security tools, toolkits, and guides.
Download security tools
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Document
Document
Learn more about Physical Security at Microsoft.
FREE
Release Date:
1/20/2011
Application
Application
The Microsoft Baseline Security Analyzer provides a streamlined method to identify missing security updates and common security misconfigurations. MBSA 2.1.1 is a minor upgrade to add support for Windows 7 and Windows Server 2008 R2.
FREE
Release Date:
11/4/2009
Tool
Tool
Use the ISA Server Security Configuration Wizard Update to add the Microsoft® Internet Security and Acceleration (ISA) Server 2006 Standard Edition and ISA Server 2006 Enterprise Edition server roles to the Security Configuration Wizard (SCW).
FREE
Release Date:
8/3/2006
Security Patch
Security Patch
This update addresses the vulnerability discussed in Microsoft Security Bulletin MS12-071. To find out if other security updates are available for you, see the Additional Information section at the bottom of this page.
FREE
Release Date:
11/9/2012
Document
Document
With the forthcoming release of Windows Vista, Microsoft is empowering businesses and consumers to address mounting security threats.
FREE
Release Date:
9/14/2006
Document
Document
This document discusses potential threats to each component of an MIIS 2003 infrastructure and makes recommendations on how to mitigate those threats or refers the reader to additional documentation detailing the specific solutions available.
FREE
Release Date:
1/5/2006
Security Patch
Security Patch
This update addresses the vulnerability discussed in Microsoft Security Bulletin MS14-012. To find out if other security updates are available for you, see the Additional Information section at the bottom of this page.
FREE
Release Date:
3/7/2014
Document
Document
The Windows Vista Security Guide has been replaced by the Windows Vista Security Compliance Management Toolkit, part of the Security Compliance Management Toolkit Series. See the note in the Overview section for the current download location.
FREE
Release Date:
4/22/2009
Document
Document
This white paper describes how to develop comprehensive data security policies that have minimal performance overheads.
FREE
Release Date:
7/29/2011
Document
Document
The Windows Server 2003 Security Guide has been replaced by the Windows Server 2003 Security Compliance Management Toolkit, part of the Security Compliance Management Toolkit Series. See the note in the Overview section for the current download location.
FREE
Release Date:
4/21/2009
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