Windows Security & Updates

Windows Security & UpdatesDownload security updates, service packs, PowerToys, and more for Microsoft Windows.

Get the latest security downloads Visit Microsoft Update
Visit Microsoft Update to get the latest security downloads and more.

3816 results found; results 1-20 shown.Next >

Title Release Date Popularity
Windows Malicious Software Removal Tool

This tool checks your computer for infection by specific, prevalent malicious software (including Blaster, Sasser, and Mydoom) and helps to remove the infection if it is found. Microsoft will release an updated version of this tool on the second Tuesday of each month.
9/9/2008
#7

Windows XP Service Pack 3 Network Installation Package for IT Professionals and Developers

This installation package is intended for IT professionals and developers downloading and installing on multiple computers on a network. If you're updating just one computer, please visit Windows Update.
5/6/2008
#8

Windows® Defender

Windows 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 support ended in June 2005.
5/23/2007
#12

Windows Search 4.0 for Windows XP (KB940157)

Windows Search 4.0 is an updated component of Windows that enables instant search on your computer.
6/3/2008
#13

Windows Vista Service Pack 1 Five Language Standalone (KB936330)

Windows Vista Service Pack 1 is an update to Windows Vista that addresses key feedback from our customers. SP1 addresses specific reliability and performance issues, supports new types of hardware, and adds support for several emerging standards.
3/18/2008
#16

Internet Explorer 6 Service Pack 1

Internet Explorer 6 has been updated as part of Windows XP Service Pack 2 and Internet Explorer 7 for Windows XP and Windows Server 2003 is now available. For more information on downloading Internet Explorer 7, please read the Overview section. Internet Explorer 6 Service Pack 1 is recommended for systems running versions of Windows prior to Windows XP.
9/21/2005
#20

Windows XP Service Pack 2 for IT Professionals and Developers

This installation package is intended for IT professionals and developers downloading and installing on multiple computers on a network. If you're updating just one computer, please visit Windows Update
8/10/2004
#22

Update for Windows XP (KB932823)

Install this update to resolve an issue in which a user is unable to use Windows Internet Explorer 7 to download files on a computer that is running Windows XP with IME enabled.
5/28/2008
#31

.NET Framework 1.1 Service Pack 1

Download the latest .NET Framework 1.1 Service Pack from Microsoft.
8/30/2004
#36

VPC 2007 SP1

Service Pack Update for Virtual PC 2007 qualifying Windows Server 2008, Vista SP1 and XP SP3
5/15/2008
#39

Update for Windows XP Service Pack 2 (KB884020)

This update helps resolve an issue on computers running Windows XP Service Pack 2.
9/17/2004
#48

SubInACL (SubInACL.exe)

SubInACL is a command-line tool that enables administrators to obtain security information about files, registry keys, and services, and transfer this information from user to user, from local or global group to group, and from domain to domain.
6/14/2004
#55

Update for Windows Vista (KB929547)

Install this update to resolve an issue where after installing the Windows Filtering Platform (WFP) driver, applications and services appear to stop responding for approximately 15 seconds.
8/27/2007
#57

Windows XP Service Pack 3 - ISO-9660 CD Image File

Windows® XP Service Pack 3 (SP3) includes all previously released updates for the operating system. This update also includes a small number of new functionalities, which do not significantly change customers’ experience with the operating system.
5/6/2008
#58

Windows Server 2003 Service Pack 2 (32-bit x86)

Microsoft Windows Server 2003 Service Pack 2 (SP2) is a cumulative service pack that includes the latest updates and provides enhancements to security and stability.
3/12/2007
#61

Remote Desktop Connection Software

Remote Desktop in Windows XP Professional provides remote access to the desktop of your computer running Windows XP Professional, from a computer at another location. Using Remote Desktop you can, for example, connect to your office computer from home and access all your applications, files, and network resources as though you were in front of your computer at the office.
7/26/2007
#63

Security Update for Windows XP (KB951376)

A security issue has been identified that could allow an unauthenticated remote attacker to compromise your Microsoft Windows-based system and gain control over it.
6/19/2008
#65

Windows Vista Service Pack 1 All Language Standalone (KB936330)

Windows Vista Service Pack 1 is an update to Windows Vista that addresses key feedback from our customers. SP1 addresses specific reliability and performance issues, supports new types of hardware, and adds support for several emerging standards.
4/14/2008
#67

Windows 2000 Service Pack 4 Network Install for IT Professionals

Windows 2000 Service Pack 4 (SP4) is a recommended upgrade. Download Windows 2000 Service Pack 4 to obtain updates that can help improve security, application compatibility, operating system reliability, and Setup.
6/26/2003
#70

Microsoft Baseline Security Analyzer 2.1 (for IT Professionals)

The Microsoft Baseline Security Analyzer provides a streamlined method of identifying common security misconfigurations. MBSA 2.1 adds Windows Vista and Windows Server 2008 compatibility.
5/22/2008
#75