September 23, 2019—KB4522012 (OS Build 16299.1392)

September 23, 2019—KB4522012 OS Build 16299.1392 Reminder March 12 and April 9 were the last two Delta updates for Windows 10, version 1709. Security and quality updates will continue to be available via the express and full cumulative update packages. For more information on this change please...

October 15, 2019—KB4519978 (OS Build 17134.1099)

October 15, 2019—KB4519978 OS Build 17134.1099 The Windows 10 April 2018 Update will reach end of service on November 12, 2019 for Home and Pro editions. We will begin updating devices running the Windows 10 April 2018 Update starting July 16, 2019 to help ensure that these devices remain in a...

September 24, 2019—KB4516045 (OS Build 17134.1039)

September 24, 2019—KB4516045 OS Build 17134.1039 The Windows 10 April 2018 Update will reach end of service on November 12, 2019 for Home and Pro editions. We will begin updating devices running the Windows 10 April 2018 Update starting July 16, 2019 to help ensure that these devices remain in a...

October 3, 2019—KB4524149 (OS Build 17134.1040)

October 3, 2019—KB4524149 OS Build 17134.1040 IMPORTANT This is a required security update that expands the out-of-band update dated September 23, 2019. This security update includes the Internet Explorer scripting engine security vulnerability CVE-2019-1367 mitigation and corrects a recent...

October 3, 2019—KB4524150 (OS Build 16299.1421)

October 3, 2019—KB4524150 OS Build 16299.1421 IMPORTANT This is a required security update that expands the out-of-band update dated September 23, 2019. This security update includes the Internet Explorer scripting engine security vulnerability CVE-2019-1367 mitigation and corrects a recent...

October 3, 2019—KB4524148 (OS Build 17763.775)

October 3, 2019—KB4524148 OS Build 17763.775 IMPORTANT This is a required security update that expands the out-of-band update dated September 23, 2019. This security update includes the Internet Explorer scripting engine security vulnerability CVE-2019-1367 mitigation and corrects a recent printi...

January 23, 2020—KB4534318 (OS Build 16299.1654)

January 23, 2020—KB4534318 OS Build 16299.1654 Reminder March 12 and April 9 were the last two Delta updates for Windows 10, version 1709. Security and quality updates will continue to be available via the express and full cumulative update packages. For more information on this change please vis...

January 23, 2020—KB4534324 (Preview of Monthly Rollup)

January 23, 2020—KB4534324 Preview of Monthly Rollup Improvements and fixes This non-security update includes improvements and fixes that were a part of KB4534297released January 14, 2020 and also includes these new quality improvements as a preview of the next Monthly Rollup update: Addresses an...

January 23, 2020—KB4534308 (OS Build 17134.1276)

January 23, 2020—KB4534308 OS Build 17134.1276 Windows 10, version 1803 the April 2018 Update Home and Pro editions have reached end of service. For Windows 10 devices that are at, or within several months of reaching end of service, Windows Update will automatically initiate a feature update wit...

January 23, 2020—KB4534320 (Preview of Monthly Rollup)

January 23, 2020—KB4534320 Preview of Monthly Rollup Improvements and fixes This non-security update includes improvements and fixes that were a part of KB4534283released January 14, 2020 and also includes these new quality improvements as a preview of the next Monthly Rollup update: No additiona...

January 23, 2020-KB4535669 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 and Windows Server 2019

January 23, 2020-KB4535669 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 and Windows Server 2019 Release Date: January 23, 2020 Version: .NET Framework 3.5, 4.7.2 and 4.8 Summary This article describes the Cumulative Updates for 3.5, 4.7.2 and 4.8 for Windows...

Preview of Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1, RT 8.1, and Windows Server 2012 R2 (KB4535674)

Preview of Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1, RT 8.1, and Windows Server 2012 R2 KB4535674 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.5.2 Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1...

Preview of Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB4535673)

Preview of Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 KB4535673 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.5.2 Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1 Microsoft .NET Framework 4.6.2...

What does it mean if Windows isn't supported?

What does it mean if Windows isn't supported? An unsupported version of Windows doesn't receive software updates from Microsoft. These updates include security updates that protect your PC from harmful viruses, spyware, and other malicious software, which can steal your personal information...

Servicing stack update for Windows Server 2008 SP2: January 14, 2020

Servicing stack update for Windows Server 2008 SP2: January 14, 2020 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates SSU makes sure that you have a robust and reliable servicing stack so that your...

Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: January 14, 2020

Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: January 14, 2020 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates SSU makes sure that you have a robust and reliable servicing stack...

Servicing stack update for Windows Server 2008 SP2: November 12, 2019

Servicing stack update for Windows Server 2008 SP2: November 12, 2019 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.We strongly recommend you install the latest servicing stack update SSU for your operating system befor...

Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: December 10, 2019

Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: December 10, 2019 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.We strongly recommend you install the latest servicing stack update SSU for your operating...

Servicing stack update for Windows Server 2008 SP2: December 10, 2019

Servicing stack update for Windows Server 2008 SP2: December 10, 2019 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.We strongly recommend you install the latest servicing stack update SSU for your operating system befor...

Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: November 12, 2019

Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: November 12, 2019 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.We strongly recommend you install the latest servicing stack update SSU for your operating...

Servicing stack update for Windows Server 2012: December 10, 2019

Servicing stack update for Windows Server 2012: December 10, 2019 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.We strongly recommend you install the latest servicing stack update SSU for your operating system before...

Servicing stack update for Windows 10, version 1903 and 1909: January 14, 2020

Servicing stack update for Windows 10, version 1903 and 1909: January 14, 2020 Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates SSU makes sure that you have a robust and reliable servicing stack so...

Servicing stack update for Windows 7 SP1 and Windows Server 2008 R2 SP1: March 12, 2019

Servicing stack update for Windows 7 SP1 and Windows Server 2008 R2 SP1: March 12, 2019 Summary This update makes quality improvements to the servicing stack component that installs Windows updates. Key changes include: Addresses an issue in the servicing stack when you install an update that has...

Servicing stack update for Windows Server 2008 SP2: April 9, 2019

Servicing stack update for Windows Server 2008 SP2: April 9, 2019 Summary This update makes quality improvements to the servicing stack component that installs Windows updates. Key changes include: Addresses an issue in the servicing stack when you install an update that has been signed by using...

January 14, 2020—KB4534314 (Security-only update)

January 14, 2020—KB4534314 Security-only update IMPORTANT Verify that you have installed the required updates listed in the How to get this update section before installing this update. IMPORTANT Customers who have purchased the Extended Security Update ESU for on-premises versions of some...

January 14, 2020—KB4534297 (Monthly Rollup)

January 14, 2020—KB4534297 Monthly Rollup Improvements and fixes This security update includes improvements and fixes that were a part of update KB4525252 released November 19, 2019 and addresses the following issues: Addresses an issue to support new SameSitecookie policies by default for releas...

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January 14, 2020—KB4528760 (OS Builds 18362.592 and 18363.592) - EXPIRED

January 14, 2020—KB4528760 OS Builds 18362.592 and 18363.592 - EXPIRED NEW 8/5/21 EXPIRATION NOTICEIMPORTANT As of 8/5/2021, this KB is no longer available from Windows Update, the Microsoft Update Catalog, or other release channels. We recommend that you update your devices to the latest securit...

January 14, 2020—KB4534303 (Monthly Rollup)

January 14, 2020—KB4534303 Monthly Rollup IMPORTANT Verify that you have installed the required updates listed in the How to get this update section before installing this update. IMPORTANT Customers who have purchased the Extended Security Update ESU for on-premises versions of some operating...

January 14, 2020—KB4534283 (Monthly Rollup)

January 14, 2020—KB4534283 Monthly Rollup Improvements and fixes This security update includes improvements and fixes that were a part of update KB4525242 released November 19, 2019 and addresses the following issues: Security updates to the Microsoft Scripting Engine, Windows Input and...

January 14, 2020—KB4534273 (OS Build 17763.973)

January 14, 2020—KB4534273 OS Build 17763.973 Note This release also contains updates for Microsoft HoloLens OS Build 17763.973 released January 14, 2020. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have n...

January 14, 2020—KB4534288 (Security-only update)

January 14, 2020—KB4534288 Security-only update Improvements and fixes This security update includes quality improvements. Key changes include: Security updates to Windows Input and Composition, Windows Media, Windows Storage and Filesystems, and Windows Server. For more information about the...

January 14, 2020—KB4534312 (Security-only update)

January 14, 2020—KB4534312 Security-only update IMPORTANT Verify that you have installed the required updates listed in the How to get this update section before installing this update. IMPORTANT Customers who have purchased the Extended Security Update ESU for on-premises versions of some...

January 14, 2020—KB4534310 (Monthly Rollup)

January 14, 2020—KB4534310 Monthly Rollup IMPORTANT Verify that you have installed the required updates listed in the How to get this update section before installing this update. IMPORTANT Customers who have purchased the Extended Security Update ESU for on-premises versions of some operating...

January 14, 2020—KB4534309 (Security-only update)

January 14, 2020—KB4534309 Security-only update Improvements and fixes This security update includes quality improvements. Key changes include: Addresses an issue to support new SameSitecookie policies by default for release 80 of Google Chrome. Security updates to Windows Input and Composition,...

Description of the security update for Office Online Server: January 14, 2020

Description of the security update for Office Online Server: January 14, 2020 Summary This security update resolves a spoofing vulnerability that exists if Office Online does not validate the origin in cross-origin communications correctly. To learn more about the vulnerability, see Microsoft...

Description of the security update for Excel 2013: January 14, 2020

Description of the security update for Excel 2013: January 14, 2020 Summary This security update resolves a remote code execution vulnerability that exists in Microsoft Excel software if the software does not correctly handle objects in memory. To learn more about the vulnerability, see Microsoft...

Description of the security update for Office 2013: January 14, 2020

Description of the security update for Office 2013: January 14, 2020 Summary This security update resolves a remote code execution vulnerability that exists in Microsoft Office software if the software does not correctly handle objects in memory. To learn more about the vulnerability, see Microso...

Description of the security update for Office 2016: January 14, 2020

Description of the security update for Office 2016: January 14, 2020 Summary This security update resolves a remote code execution vulnerability that exists in Microsoft Office software if the software does not correctly handle objects in memory. To learn more about the vulnerability, see Microso...

Description of the security update for Excel 2016: January 14, 2020

Description of the security update for Excel 2016: January 14, 2020 Summary This security update resolves a remote code execution vulnerability that exists in Microsoft Excel software when the software does not handle objects in memory correctly. To learn more about the vulnerability, see Microso...

Description of the security update for Office 2010: January 14, 2020

Description of the security update for Office 2010: January 14, 2020 Summary This security update resolves a remote code execution vulnerability that exists in Microsoft Office software if the software does not correctly handle objects in memory. To learn more about the vulnerability, see Microso...

Description of the security update for Excel 2010: January 14, 2020

Description of the security update for Excel 2010: January 14, 2020 Summary This security update resolves a remote code execution vulnerability that exists in Microsoft Excel software when the software fails to properly handle objects in memory. To learn more about the vulnerability, see Microsof...

January 14, 2020-KB4532933 Cumulative Update for .NET Framework 4.8 for Windows 10 version 1607 and Windows Server 2016

January 14, 2020-KB4532933 Cumulative Update for .NET Framework 4.8 for Windows 10 version 1607 and Windows Server 2016 Release Date: January 14, 2020 Version: .NET Framework 4.8 Summary A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properl...

January 14, 2020-KB4535101 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 and Windows Server 2019

January 14, 2020-KB4535101 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10 Version 1809 and Windows Server 2019 Release Date: January 14, 2020 Version: .NET Framework 3.5, 4.7.2 and 4.8 Summary A remote code execution vulnerability exists when the Microsoft .NET Framework...

Security Only Update for .NET Framework 2.0, 3.0, 4.5.2, 4.6 for Windows Server 2008 SP2 (KB4534979)

Security Only Update for .NET Framework 2.0, 3.0, 4.5.2, 4.6 for Windows Server 2008 SP2 KB4534979 Applies to: Microsoft .NET Framework 2.0 Microsoft .NET Framework 3.0 Microsoft .NET Framework 4.5.2 Microsoft .NET Framework 4.6 Summary A remote code execution vulnerability exists when the...

January 14, 2020-KB4532935 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1709

January 14, 2020-KB4532935 Cumulative Update for .NET Framework 4.8 for Windows 10 Version 1709 Release Date: January 14, 2020 Version: .NET Framework 4.8 Summary A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly. An attacker who...

January 14, 2020—KB4534306 (OS Build 10240.18453)

January 14, 2020—KB4534306 OS Build 10240.18453 For more information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article. Highlights Updates to improve security when storing and managing files. Updates to impro...

Security Only Update for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Windows Server 2008 R2 SP1 (KB4534976)

Security Only Update for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Windows Server 2008 R2 SP1 KB4534976 Applies to: Microsoft .NET Framework 3.5.1 Microsoft .NET Framework 4.5.2 Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1 Microsof...

January 14, 2020—KB4534271 (OS Build 14393.3443)

January 14, 2020—KB4534271 OS Build 14393.3443 Reminder The additional servicing for Windows 10 Enterprise, Education, and IoT Enterprise editions ended on April 9, 2019 and doesn't extend beyond this date. To continue receiving security and quality updates, Microsoft recommends updating to the...

Security Only Update for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB4534977)

Security Only Update for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 KB4534977 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.5.2 Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1 Microsoft .NET Framework 4.6.2...