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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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Application
Application
The Microsoft Security Essentials Prerelease program allows users to run the latest & greatest versions of Security Essentials before they are publicy available
FREE
Release Date:
2/19/2013
Application
Application
Microsoft Security Essentials provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software.
FREE
Release Date:
2/26/2013
Application
Application
The Microsoft Baseline Security Analyzer provides a streamlined method to identify missing security updates and common security misconfigurations. MBSA 2.2 is a minor upgrade to correct minor issues and add optional catalog support.
FREE
Release Date:
8/6/2010
Tool
Tool
...Solution Accelerator provides centralized security baseline management features, a baseline...portfolio, customization capabilities, and security baseline export flexibility to accelerate...s ability to efficiently manage the security and compliance process for the most widely...
FREE
Release Date:
4/1/2012
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
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
Security Patch
Security Patch
This update addresses the vulnerability discussed in Microsoft Security Bulletin MS12-063. 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:
9/20/2012
Security Patch
Security Patch
This update addresses the vulnerability discussed in Microsoft Security Bulletin MS13-021. 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:
3/11/2013
Security Patch
Security Patch
A security issue has been identified in a Microsoft software product that could affect your system.
FREE
Release Date:
4/22/2013
Security Patch
Security Patch
This update addresses the vulnerability addressed in Microsoft Security Bulletin MS03-034. To find out if more recent security updates are available for you, see the Overview section of this page.
FREE
Release Date:
9/3/2003
Security Patch
Security Patch
A security issue has been identified that could allow an attacker to remotely compromise your Windows-based system using the Windows Media Player Plug-in and gain control over it.
FREE
Release Date:
2/13/2006
Security Patch
Security Patch
A security issue has been identified that could allow an authenticated local attacker to compromise your system and gain control over it.
FREE
Release Date:
5/7/2012
Security Patch
Security Patch
A security issue has been identified in a Microsoft software product that could affect your system.
FREE
Release Date:
4/8/2013
Security Patch
Security Patch
A security issue has been identified in a Microsoft software product that could affect your system.
FREE
Release Date:
4/8/2013
Security Patch
Security Patch
A security issue has been identified in a Microsoft software product that could affect your system.
FREE
Release Date:
4/8/2013
Security Patch
Security Patch
A security issue has been identified in a Microsoft software product that could affect your system.
FREE
Release Date:
4/8/2013
Security Patch
Security Patch
A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it.
FREE
Release Date:
3/7/2011
Security Patch
Security Patch
This update addresses the vulnerability addressed in the Microsoft Windows Security Bulletin MS03-041. To find out if more recent security updates are available for you, see the Overview section of this page.
FREE
Release Date:
10/14/2003
Update
Update
Hotfixes and Security Updates in Windows Server 2008 SP2 and Windows Vista SP2
FREE
Release Date:
8/14/2009
Document
Document
Microsoft Security Update Guide, Second Edition: Helping IT Professionals Better Understand and Maximize Microsoft Security Update Release Information, Processes, Communications, and Tools.
FREE
Release Date:
6/20/2011
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