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Protect your PC from viruses, spyware, and other malicious software.
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Download security tools, toolkits, and guides.
Download security tools
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Security Patch
Security Patch
This update addresses the vulnerability discussed in Microsoft Security Advisory KB2736233. To find out if other security updates are available for you, see the Overview section of this page.
FREE
Release Date:
9/10/2012
Security Patch
Security Patch
This update addresses the vulnerability discussed in Microsoft Security Bulletin MS12-077. 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:
12/7/2012
Security Patch
Security Patch
This update addresses the vulnerability discussed in Microsoft Security Bulletin MS13-028. 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:
4/5/2013
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 Overview section of this page.
FREE
Release Date:
3/11/2013
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:
3/11/2013
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:
2/11/2013
Security Patch
Security Patch
A security issue has been identified in a Microsoft software product that could affect your system.
FREE
Release Date:
4/8/2013
Security Patch
Security Patch
This security update to Silverlight includes fixes outlined in Security update KB2814124.
FREE
Release Date:
4/2/2013
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:
1/7/2013
Security Patch
Security Patch
A security issue has been identified that could allow an attacker to compromise your Windows-based system with Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package.
FREE
Release Date:
9/29/2010
Security Patch
Security Patch
A security issue has been identified leading to a vulnerability in MFC applications that are built with Visual Studio 2008 and ship the Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package.
FREE
Release Date:
6/7/2011
Security Patch
Security Patch
A security issue has been identified that could allow an attacker to compromise your Windows-based system with Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package.
FREE
Release Date:
9/20/2010
Application
Application
...Defender is a free program that helps you stay productive by protecting your computer against pop-ups, slow performance and security threats caused by spyware and other potentially unwanted software. Windows Defender no longer supports Windows 2000 as mainstream...
FREE
Release Date:
5/23/2007
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:
1/24/2013
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on May 8, 2012.
FREE
Release Date:
5/8/2012
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on November 13, 2012.
FREE
Release Date:
12/10/2012
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on January 8, 2013.
FREE
Release Date:
1/7/2013
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on June 12, 2012.
FREE
Release Date:
6/12/2012
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on February 12, 2013.
FREE
Release Date:
2/11/2013
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on May 14, 2013.
FREE
Release Date:
5/14/2013
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on April 10, 2012.
FREE
Release Date:
4/10/2012
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on July 10, 2012.
FREE
Release Date:
7/9/2012
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on April 9, 2013.
FREE
Release Date:
4/16/2013
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on October 11, 2011.
FREE
Release Date:
10/10/2011
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on December 13, 2011.
FREE
Release Date:
12/12/2011
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on January 10, 2012.
FREE
Release Date:
1/9/2012
Document
Document
Whitepaper detailing the Microsoft Windows Security Center
FREE
Release Date:
10/6/2006
Document
Document
The Windows XP Security Guide has been replaced by the Windows XP 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
The Security Guide provides guidelines for assessing and managing security risks to your Lync Server 2010 deployment.
FREE
Release Date:
3/19/2012
Document
Document
The Windows Server 2008 Security Guide has been replaced by the Windows Server 2008 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
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