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Help protect your PC with Microsoft Security Essentials.
Microsoft Security Essentials
Get the latest updates for your PC at Microsoft Update.
Microsoft Update
Get the latest tools, updates, and tips at Microsoft Safety & Security Center.
Microsoft Safety & Security Center
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Security Patch
Security Patch
A security vulnerability exists in Microsoft Office 2000 that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.
FREE
Release Date:
6/10/2006
Security Patch
Security Patch
A security vulnerability exists in Microsoft Word 2000 that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.
FREE
Release Date:
6/10/2006
Security Patch
Security Patch
This update applies to the Forefront TMG Client software that was provided either with Forefront TMG 2010, or as a separate download.
FREE
Release Date:
13/06/2011
Security Patch
Security Patch
This update resolves the “Unchecked Buffer in Universal Plug and Play Can Lead to System Compromise” security vulnerability in Windows XP. Download now to prevent a malicious user from compromising your computer, or using it to interfere with another computer's operation.
FREE
Release Date:
19/12/2001
Security Patch
Security Patch
This update resolves the "Unchecked Buffer in File Decompression Functions" security vulnerability in Windows XP. Download now to prevent a specially malformed file from causing unauthorized code to run on your computer.
FREE
Release Date:
2/10/2002
Security Patch
Security Patch
This patch resolves the "Flaw in Windows XP Help and Support Center Could Enable File Deletion" vulnerability in Windows XP. Download now to prevent an attacker from deleting files on another user’s computer via either a Web site or an e-mail.
FREE
Release Date:
9/10/2002
Security Patch
Security Patch
This patch resolves the "Flaw in Windows XP Help and Support Center Could Enable File Deletion" vulnerability in Windows XP Professional. Download now to prevent an attacker from deleting files on another user’s computer, via either a Web site or an e-mail.
FREE
Release Date:
9/10/2002
Security Patch
Security Patch
This update resolves the "Certificate Validation Flaw Could Enable Identity Spoofing" vulnerability in Windows XP. Download now to prevent an attacker from attempting identity spoofing using certificates.
FREE
Release Date:
9/09/2002
Security Patch
Security Patch
This update resolves the "Unchecked Buffer in Network Share Provider can lead to Denial of Service" vulnerability in Windows XP. Download now to prevent a malicious user from launching a denial of service (DoS) attack on your computer.
FREE
Release Date:
21/08/2002
Security Patch
Security Patch
This update resolves the "Cryptographic Flaw in RDP Protocol can Lead to Information Disclosure" security vulnerability. Download now if you use Remote Desktop or Terminal Services to prevent an attacker from potentially learning encrypted information sent during these sessions.
FREE
Release Date:
14/08/2002
Security Patch
Security Patch
Security issues identified in Microsoft Internet Explorer could allow an attacker to compromise systems with Internet Explorer installed (even if Internet Explorer is not used as the Web browser). Download this update from Microsoft to help protect your computer.
FREE
Release Date:
3/10/2003
Security Patch
Security Patch
This update resolves the "Unchecked Buffer in PPTP Implementation Could Enable Denial of Service" security vulnerability in Windows XP. Download now to prevent an attacker from disrupting service on a server that offers private networking and uses the PPTP protocol.
FREE
Release Date:
9/10/2002
Security Patch
Security Patch
This update resolves the "Certificate Validation Flaw Could Enable Identity Spoofing" vulnerability in Windows XP. Download now to prevent an attacker from attempting identity spoofing using certificates.
FREE
Release Date:
24/10/2002
Security Patch
Security Patch
This update addresses several newly discovered security vulnerabilities affecting Internet Information Services (IIS) 5.1 with Windows XP Professional, as well as incorporating all previous updates for IIS. Download now to continue keeping your computer secure.
FREE
Release Date:
9/10/2002
Security Patch
Security Patch
This update resolves the "Cryptographic Flaw in RDP Protocol can Lead to Information Disclosure" security vulnerability. Download now if you use Remote Desktop or Terminal Services to prevent an attacker from potentially learning encrypted information sent during these sessions.
FREE
Release Date:
14/08/2002
Security Patch
Security Patch
This update resolves the "Unchecked buffer in HTML Help can lead to Code Execution" security vulnerability in Windows XP. Download now to prevent a malicious user from running an unauthorized program on your computer.
FREE
Release Date:
16/08/2002
Security Patch
Security Patch
Security issues identified in Microsoft Internet Explorer (IE) could allow an attacker to compromise systems with IE installed (even if IE is not used as the Web browser). Download this update from Microsoft to help protect your computer.
FREE
Release Date:
3/10/2003
Security Patch
Security Patch
This update resolves the "Unchecked Buffer in PPTP Implementation Could Enable Denial of Service" security vulnerability in Windows XP. Download now to prevent an attacker from disrupting service on a server that offers private networking and uses the PPTP protocol.
FREE
Release Date:
9/10/2002
Security Patch
Security Patch
Security issues identified in Microsoft Internet Explorer could allow an attacker to compromise systems with Internet Explorer installed (even if Internet Explorer is not used as the Web browser). Download this update from Microsoft to help protect your computer.
FREE
Release Date:
3/10/2003
Security Patch
Security Patch
This update resolves the "Unchecked Buffer in Network Share Provider can lead to Denial of Service" vulnerability in Windows XP. Download now to prevent a malicious user from launching a denial of service (DoS) attack on your computer.
FREE
Release Date:
21/08/2002
Security Patch
Security Patch
This update addresses several newly discovered security vulnerabilities affecting Internet Information Services (IIS) 5.1 with Windows XP Professional, as well as incorporating all previous updates for IIS. Download now to continue keeping your computer secure.
FREE
Release Date:
9/10/2002
Security Patch
Security Patch
This download enables you to update the Web Folders component in Microsoft Windows operating systems.
FREE
Release Date:
17/05/2007
Security Patch
Security Patch
This update resolves the "Unchecked buffer in HTML Help can lead to Code Execution" security vulnerability in Windows XP Professional. Download now to prevent a malicious user from running an unauthorized program on your computer.
FREE
Release Date:
10/07/2002
Security Patch
Security Patch
This update resolves the "Certificate Validation Flaw Could Enable Identity Spoofing" vulnerability in Windows XP Professional. Download now to prevent an attacker from attempting identity spoofing using certificates.
FREE
Release Date:
9/09/2002
Security Patch
Security Patch
This update resolves the "Buffer Overrun in SmartHTML Interpreter Could Allow Code Execution" vulnerability in Windows XP Download now to eliminate a vulnerability of moderate severity in the Front Page 2000 Server Extensions for Microsoft Office.
FREE
Release Date:
25/09/2002
Security Patch
Security Patch
This update resolves the "Certificate Validation Flaw Could Enable Identity Spoofing" vulnerability in Windows XP. Download now to prevent an attacker from attempting identity spoofing using certificates.
FREE
Release Date:
9/09/2002
Security Patch
Security Patch
...enable an attacker to compromise a user's Windows-based computer and gain complete control over it, if the user visited the attacker's Web site. Download this update to help protect your computer from this and other security concerns.
FREE
Release Date:
18/12/2002
Security Patch
Security Patch
Download this patch to help protect your computer from an identified security vulnerability in Microsoft® Windows NT 4.0® that could allow an attacker to take control of the computer.
FREE
Release Date:
23/04/2003
Security Patch
Security Patch
Download this patch to help protect your computer from an identified security vulnerability in Microsoft® Windows NT 4.0® Terminal Server Edition that could allow an attacker to take control of the computer.
FREE
Release Date:
23/04/2003
Security Patch
Security Patch
Download this patch to protect against a security vulnerability that could allow an attacker to disrupt a facility by which security settings are applied to Windows-based computers in a corporate network.
FREE
Release Date:
22/01/2003
Security Patch
Security Patch
A problem may occur on an Internet Security and Acceleration (ISA) Server 2000-based computer during the processing of incoming Domain Name System (DNS) requests that are sent to a published internal DNS server. Download this security patch to resolve the issue.
FREE
Release Date:
19/03/2003
Security Patch
Security Patch
Download this patch to help protect your computer from an identified security vulnerability in Microsoft® Windows XP 64-Bit Edition® that could allow an attacker to take control of the computer.
FREE
Release Date:
28/05/2003
Security Patch
Security Patch
The ISA Server Winsock Proxy service may incorrectly handle a response from remote clients. This could potentially result in a denial of service. Download this security patch to resolve the issue.
FREE
Release Date:
9/04/2003
Security Patch
Security Patch
This XP Embedded SP1 Database update addresses six (6) new Microsoft Security Bulletins: MS05-016, MS05-017, MS05-018, MS05-019, MS05-020, and MS05-022. Additionally, this update rolls in all previous SP1 database security updates into a single update.
FREE
Release Date:
25/04/2005
Security Patch
Security Patch
This XP Embedded SP1 Database update addresses six (6) new or reissued Microsoft Security Bulletins: MS05-036, MS05-037, MS05-038, MS05-039, MS05-040, and MS05-043. Additionally, this update rolls in all previous SP1 database security updates into a single update.
FREE
Release Date:
25/08/2005
Security Patch
Security Patch
This XP Embedded SP1 Database update addresses ten (10) new or reissued Microsoft Security Bulletins: MS05-041, MS05-042, MS05-044, MS05-045, MS05-046, MS05-047, MS05-048, MS05-049, MS05-050, MS05-051, and MS05-052. Additionally, this update rolls in all previous SP1 database security updates into a single update.
FREE
Release Date:
17/11/2005
Security Patch
Security Patch
This XP Embedded SP1 Database update addresses eight (8) new or reissued Microsoft Security Bulletins: MS05-054, MS06-001, MS06-002, MS06-005, MS06-006, MS06-007, MS06-008, and MS06-009. Additionally, this update rolls in all previous SP1 database security updates into a single update.
FREE
Release Date:
10/02/2006
Security Patch
Security Patch
This XP Embedded SP2 Database update addresses eight (8) new or reissued Microsoft Security Bulletins: Microsoft Security Bulletins MS05-054, MS06-001, MS06-002, MS06-005, MS06-006, MS06-007, MS06-008, and MS06-009. Additionally, this update rolls in all previous SP2 database security updates into a single update.
FREE
Release Date:
10/02/2006
Security Patch
Security Patch
This XP Embedded SP2 Database update addresses eleven (11) new or reissued Microsoft Security Bulletins. Additionally, this update rolls in all previous SP2 database security updates into a single update.
FREE
Release Date:
17/11/2005
Security Patch
Security Patch
This XP Embedded SP2 Database update addresses four (4) new Microsoft Security Bulletins: MS05-016, MS05-018, MS05-019, and MS05-020. Additionally, this update rolls in all previous SP2 database security updates into a single update.
FREE
Release Date:
25/04/2005
Security Patch
Security Patch
This XP Embedded SP2 Database update addresses two (2) new or reissued Microsoft Security Bulletins. Additionally, this update rolls in all previous SP2 database security updates into a single update.
FREE
Release Date:
9/01/2006
Security Patch
Security Patch
This XP Embedded SP1 Database update addresses three(10) new or reissued Microsoft Security Bulletins: MS05-050, MS05-053, and MS05-054. Additionally, this update rolls in all previous SP1 database security updates into a single update.
FREE
Release Date:
9/01/2006
Security Patch
Security Patch
This XP Embedded SP2 Database update addresses six (6) new or reissued Microsoft Security Bulletins: MS05-036, MS05-037, MS05-038, MS05-039, MS05-040, and MS05-043. Additionally, this update rolls in all previous SP2 database security updates into a single update.
FREE
Release Date:
26/08/2005
Security Patch
Security Patch
This DVD5 ISO image file contains the security updates for Windows released on Windows Update on March 9th, 2010.
FREE
Release Date:
8/03/2010
Security Patch
Security Patch
This update addresses the vulnerability addressed in Microsoft Security Bulletin 03-026. Find out about more recent critical updates in the Overview section.
FREE
Release Date:
16/07/2003
Security Patch
Security Patch
This update addresses the vulnerability addressed in Microsoft Security Bulletin MS03-014. To find out if more recent security updates are available for you, see the Overview section of this page.
FREE
Release Date:
14/04/2003
Security Patch
Security Patch
This update addresses the vulnerability addressed in Microsoft Security Bulletin MS03-039. To find out if more recent security updates are available for you, see the Overview section of this page.
FREE
Release Date:
10/09/2003
Security Patch
Security Patch
This update addresses the vulnerability addressed in Microsoft Security Bulletin 03-026. Find out about more recent critical updates in the Overview section.
FREE
Release Date:
16/07/2003
Security Patch
Security Patch
This XP Embedded SP1 Database update addresses one (1) reissued Microsoft Security Bulletin: MS05-004. This package updates Windows XP Embedded Feature Update Q831558, .Net 1.1 for Windows XP Embedded with Service Pack 1.
FREE
Release Date:
8/07/2005
Security Patch
Security Patch
This update addresses the vulnerability addressed in Microsoft Security Bulletin MS03-004. To find out if more recent security updates are available for you, see the Overview section of this page.
FREE
Release Date:
13/12/2002
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