Microsoft KB Catalog

Trending KBs

KB#Last UpdatedDescription
KB5124006Oct 01, 2026KB5124006 is a cumulative update for Windows 11 version 26H1 released on September 22, 2026, with OS Build 28000.3086. This preview update delivers production-quality improvements and new features across the operating system, including enhanced taskbar customization, Start menu personalization, and…
KB5127216Oct 01, 2026KB5127216 is a Setup Dynamic Update released on September 22, 2026, addressing security vulnerabilities in Windows setup binaries and related files used during feature updates. The update applies to Windows 11 versions 24H2, 25H2, and 26H2 across all editions. Installation…
KB5128941Sep 30, 2026KB5128941 is a Setup Dynamic Update patch released on September 22, 2026, for Windows 11 version 26H1 across all editions. This update addresses security vulnerabilities specifically within Windows setup binaries and files utilized during feature updates. The patch is available…
KB5124010Oct 01, 2026KB5124010 is a September 22, 2026 cumulative preview update for Windows 11 versions 26H2, 25H2, and 24H2 (OS Builds 26300.9550, 26200.9550, and 26100.9550). This update delivers production-quality improvements alongside new features and quality fixes. Notably, this marks the final preview…
KB5125758Sep 30, 2026KB5125758 is a Safe OS Dynamic Update for Windows 11 versions 24H2, 25H2, and 26H2 released on September 22, 2026. This update focuses on improvements to the Windows Recovery Environment (WinRE), which is the recovery partition used for system troubleshooting…
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All KBs

KB#Last UpdatedDescription
KB5101650Oct 01, 2026KB5101650 is a cumulative security update released July 14, 2026, for Windows 11 versions 24H2 and 25H2 (OS Builds 26200.8875 and 26100.8875). It includes security patches, quality improvements, and updates to AI components for Copilot+ PCs. The update addresses vulnerabilities…
KB5122888Oct 01, 2026KB5122888 is a Safe OS Dynamic Update for Windows 11 version 23H2 released on September 8, 2026. This update specifically targets improvements to the Windows Recovery Environment (WinRE), which is the system recovery partition used for troubleshooting and repair operations.…
KB5126027Oct 01, 2026KB5126027 is a Setup Dynamic Update for Windows Server 2025 released on September 8, 2026. This security-focused update addresses vulnerabilities in Windows setup binaries and files utilized during feature updates. The patch applies exclusively to Windows Server 2025 systems and…
KB5123099Oct 01, 2026KB5123099 is a security and quality update for Windows 10 version 1607 and Windows Server 2016, released on September 8, 2026, advancing the OS Build to 14393.9512. This patch is part of Microsoft's Extended Security Updates (ESU) program, providing continued…
KB5122883Oct 01, 2026KB5122883 is a Safe OS Dynamic Update for Windows Server 2025 released on September 8, 2026. This patch focuses on improvements to the Windows Recovery Environment (WinRE), which is critical for system recovery and troubleshooting operations. The update is designed…
KB5122882Oct 01, 2026KB5122882 is a cumulative security update for Windows Server 2022 released on September 8, 2026 (OS Build 20348.5622). This update includes the latest security fixes, quality improvements, and non-security updates from the previous month's optional preview release. The update addresses…
KB5126045Oct 01, 2026KB5126045 is a Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, and 4.7.2 released on September 8, 2026, for Windows Server 2012 R2. This update addresses critical security vulnerabilities and provides cumulative reliability improvements to the .NET Framework…
KB5126424Oct 01, 2026KB5126424 is a cumulative security and reliability update for .NET Framework 3.5 and 4.8.1 targeting Windows 11 version 23H2, released on September 8, 2026. This patch addresses critical security vulnerabilities and resolves stability issues affecting 64-bit .NET Framework environments. The…
KB5124012Oct 01, 2026KB5124012 is a cumulative security update for Windows 11 version 26H1 released on September 8, 2026 (OS Build 28000.2954). This update includes the latest security fixes and quality improvements, along with non-security updates from the previous month's optional preview release.…
KB5122876Oct 01, 2026KB5122876 is a cumulative security update for Windows Server 2019 and Windows 10 version 1809, released on September 8, 2026, advancing the OS build to 17763.9245. This monthly patch addresses security vulnerabilities and system stability improvements for enterprise and consumer…
KB5126049Oct 01, 2026KB5126049 is a Security and Quality Rollup for .NET Framework 4.8 released on September 8, 2026, targeting Windows Server 2012 systems. This update addresses critical security vulnerabilities and includes cumulative reliability improvements for the .NET Framework. The patch is part…
KB5122874Oct 01, 2026KB5122874 is a servicing stack update (SSU) released on September 8, 2026, for Windows 10 version 1607 Enterprise LTSB, Windows 10 IoT Enterprise LTSB 2016, and Windows Server 2016 across all editions. This update enhances the servicing stack component responsible…
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