Knowledgebase Catalog

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KB# Last Updated Description
KB5078740 Apr 30, 2026 KB5078740 is a cumulative security update for Windows Server 2025 released on March 10, 2026, with OS Build 26100.32522. This update incorporates the latest security fixes and quality improvements from the previous month's optional preview release (KB5075899 from February 10,…
KB5081278 Apr 30, 2026 .NET 9.0 Update released on March 10, 2026, represents a servicing update that delivers critical security enhancements to the .NET 9.0 runtime environment. This update is designed to address identified security vulnerabilities and maintain the integrity of applications built on…
KB5079391 Apr 30, 2026 KB5079391 is a non-security cumulative update for Windows 11 versions 25H2 and 24H2, released on March 26, 2026, targeting OS builds 26200.8116 and 26100.8116. This preview update was designed to deliver production-quality improvements and new features across multiple system components.…
KB5081494 Apr 30, 2026 KB5081494 is a Setup Dynamic Update released by Microsoft on March 26, 2026, designed specifically for Windows 11 versions 24H2 and 25H2. This patch focuses on enhancing the Windows setup infrastructure by improving the binaries and supporting files utilized during…
KB5081151 Apr 30, 2026 KB5081151 is a Safe OS Dynamic Update for Windows 11 version 26H1, released on March 26, 2026. This patch specifically targets the Windows Recovery Environment (WinRE), which is a critical component responsible for system recovery and troubleshooting operations. The update…
KB5083482 Apr 30, 2026 KB5083482 is a Safe OS Dynamic Update for Windows 11 versions 24H2 and 25H2, released on March 26, 2026. This update specifically targets the Windows Recovery Environment (WinRE), which is the specialized recovery partition that enables system repair and troubleshooting…
KB5078738 Apr 30, 2026 KB5078738 is a cumulative security update for Internet Explorer 11 released on March 10, 2026, addressing multiple security vulnerabilities in the browser engine. This patch applies specifically to Windows Server 2012 and Windows Server 2012 R2 systems that maintain Extended…
KB5079466 Apr 30, 2026 KB5079466 is a security update released on March 10, 2026, for Windows 11 version 26H1 across all editions. This cumulative update (OS Build 28000.1719) represents Microsoft's monthly security patch delivery, combining the latest security improvements with non-security refinements from the…
KB5078805 Apr 30, 2026 KB5078805 is a Safe OS Dynamic Update released on March 10, 2026, specifically designed for Windows 10 Enterprise LTSC 2019 and Windows Server 2019. This update focuses on improvements to the Windows Recovery Environment (WinRE), which is a critical component…
KB5078785 Apr 30, 2026 KB5078785 is a Safe OS Dynamic Update for Windows Server version 23H2, released on March 10, 2026. This update specifically targets improvements to the Windows Recovery Environment (WinRE), which is a critical component of Windows Server systems responsible for system…
KB5079471 Apr 30, 2026 KB5079471 is a Safe OS Dynamic Update for Windows 11 versions 24H2 and 25H2, released on March 10, 2026. This update focuses on improvements to the Windows Recovery Environment (WinRE), which is a critical component responsible for system recovery and…
KB5078801 Apr 30, 2026 KB5078801 is a Safe OS Dynamic Update (DU) designed specifically for Windows 10 version 1607 and Windows Server 2016, released on March 10, 2026. This update focuses on enhancing the Windows Recovery Environment (WinRE), which is the critical recovery partition…
KB5078775 Apr 30, 2026 KB5078775 is a cumulative security update released on March 10, 2026, for Windows Server 2012 Extended Security Update (ESU) customers. This monthly rollup represents the continuation of Microsoft's commitment to providing security patches for legacy systems that have reached end-of-support…
KB5079473 Apr 30, 2026 KB5079473 is a cumulative security update for Windows 11 versions 25H2 and 24H2, released on March 10, 2026, with OS builds 26200.8037 and 26100.8037. This update represents a significant maintenance release that combines the latest servicing stack update with critical…
KB5079489 Apr 30, 2026 KB5079489 represents a non-security preview update for Windows 11 version 26H1, released on March 26, 2026, with OS Build 28000.1764. This cumulative update delivers production-quality improvements and introduces several new features alongside reliability enhancements across multiple system components. The update…
KB5086672 Apr 30, 2026 KB5086672 is an out-of-band cumulative update released on March 31, 2026, for Windows 11 versions 24H2 and 25H2 (OS Builds 26200.8117 and 26100.8117). This update was specifically designed to address installation failures encountered by users attempting to install the March…
KB5079233 Apr 30, 2026 KB5079233 is a servicing stack update (SSU) released on March 10, 2026, specifically designed for Windows Server 2012 R2 Extended Security Updates (ESU) environments. This update addresses the foundational infrastructure responsible for delivering and installing Windows updates on affected systems.…
KB5085516 Apr 29, 2026 KB5085516 is an out-of-band cumulative update released on March 21, 2026, for Windows 11 versions 25H2 and 24H2, bringing OS builds to 26200.8039 and 26100.8039. This emergency patch was specifically developed to address a critical authentication issue that emerged following…
KB5078774 Apr 29, 2026 KB5078774 is a monthly cumulative security rollup released on March 10, 2026, specifically designed for Windows Server 2012 R2 systems operating under Extended Security Updates (ESU). This patch represents part of Microsoft's ongoing commitment to maintaining security for legacy server…
KB5079234 Apr 29, 2026 KB5079234 is a servicing stack update released on March 10, 2026, specifically designed for Windows Server 2012 Extended Security Updates (ESU) environments. This update addresses quality improvements to the servicing stack component, which is responsible for the installation and management…
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