Microsoft KB Catalog

Trending KBs

KB#Last UpdatedDescription
KB5124006Sep 26, 2026KB5124006 is a cumulative preview update for Windows 11 version 26H1 released on September 22, 2026 (OS Build 28000.3086). This update delivers production-quality improvements and new features across multiple system areas including the taskbar, Start menu, Windows Search, and File…
KB5127216Sep 26, 2026KB5127216 is a Setup Dynamic Update for Windows 11 versions 24H2 and 25H2, released on September 22, 2026. This update addresses security vulnerabilities in Windows setup binaries and files used during feature updates. The patch is distributed through Windows Update,…
KB5128941Sep 26, 2026KB5128941 is a Setup Dynamic Update for Windows 11 version 26H1, released on September 22, 2026. This update addresses security vulnerabilities in Windows setup binaries and files used during feature updates. The patch applies to all editions of Windows 11…
KB5124010Sep 26, 2026KB5124010 is a cumulative non-security preview update released on September 22, 2026, for Windows 11 versions 25H2 and 24H2 (OS Builds 26200.9550 and 26100.9550). This is notably the final preview update for Windows 11 version 24H2, with version 24H2 Home…
KB5125758Sep 26, 2026KB5125758 is a Safe OS Dynamic Update for Windows 11 versions 24H2 and 25H2, released on September 22, 2026. This update focuses on improvements to the Windows Recovery Environment (WinRE), which is critical for system recovery and troubleshooting. The update…
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All KBs

KB#Last UpdatedDescription
KB5121645Sep 26, 2026KB5121645 is a cumulative security and quality update for .NET Framework 3.5, 4.7.2, and 4.8 released on August 11, 2026, targeting Windows 10 version 1809 and Windows Server 2019. This update addresses six security vulnerabilities including elevation of privilege and…
KB5120236Sep 26, 2026KB5120236 is a servicing stack update (SSU) released on August 11, 2026, for Windows 10 version 1607 and Windows Server 2016. This update enhances the servicing stack component responsible for installing Windows updates. The SSU ensures devices maintain a robust…
KB5120708Sep 26, 2026KB5120708 is a cumulative security and reliability update for .NET Framework 3.5 and 4.8.1 released on August 11, 2026. It targets Windows 11 version 25H2 and Microsoft server operating system 24H2. The update addresses six critical security vulnerabilities including elevation…
KB5121000Sep 26, 2026KB5121000 is a cumulative update for Windows 11 version 26H1 released on August 11, 2026 (OS Build 28000.2704). This update incorporates the latest security patches and quality improvements, including features from previous preview releases. The update applies to all editions…
KB5122105Sep 26, 2026.NET 9.0 Update released on August 11, 2026, delivering security fixes for the .NET 9.0 runtime. This servicing update is available through Microsoft Update for Windows client systems and through WSUS and MU Catalog for Windows Server environments. The update…
KB5120249Sep 26, 2026KB5120249 is a cumulative security update released on August 11, 2026, for Windows 10 versions 21H2 and 22H2 (OS Builds 19045.7663 and 19044.7663). This update addresses security vulnerabilities and includes quality improvements for both consumer and enterprise editions of Windows…
KB5120747Sep 26, 2026KB5120747 is a cumulative security update for .NET Framework 3.5 released on August 11, 2026, targeting Windows 11 version 26H1 (build 28000) and later. This update delivers the complete .NET Framework 3.5 product as a standalone installer, replacing any previously…
KB5120998Sep 26, 2026KB5120998 is a cumulative preview update for Windows 11 versions 25H2 and 24H2, released on August 27, 2026, affecting OS Builds 26200.9278 and 26100.9278. This update delivers production-quality improvements and introduces new features across multiple system components including taskbar customization,…
KB5121001Sep 26, 2026KB5121001 is a Safe OS Dynamic Update for Windows 11 version 26H1, released on August 27, 2026. This update delivers enhancements to the Windows Recovery Environment (WinRE), improving system recovery capabilities. The update applies to all editions of Windows 11…
KB5120709Sep 26, 2026Released August 11, 2026, KB5120709 is a cumulative security and reliability update for .NET Framework 3.5 and 4.8.1 targeting Windows 10 Version 21H2 and 22H2. This patch addresses six critical vulnerabilities including multiple remote code execution and elevation of privilege…
KB5126056Sep 26, 2026KB5126056 is a Setup Dynamic Update released on September 8, 2026, addressing security vulnerabilities in Windows setup binaries and files used during feature updates. This patch applies to Windows 11 versions 24H2 and 25H2 across all editions. The update replaces…
KB5126424Sep 26, 2026KB5126424 is a cumulative security and reliability update for .NET Framework 3.5 and 4.8.1 released on September 8, 2026, targeting Windows 11 version 23H2. This update addresses critical security vulnerabilities and resolves stability issues affecting 64-bit .NET Framework environments. The…
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