Knowledgebase Catalog

Page 3/85

KB# Last Updated Description
KB5129243 Oct 22, 2026 KB5129243 is an out-of-band (OOB) monthly rollup released September 14, 2026 for Windows Server 2012 R2 (and the matching Windows 8.1 standalone package). It follows the September 8, 2026 rollup (KB5123066) and is intended to fix regressions introduced by that…
KB5127691 Oct 22, 2026 KB5127691 is the October 13, 2026 cumulative update for .NET Framework 4.8.1 on Windows 11, version 26H1. It is a security-focused release that bundles fixes for multiple .NET Framework CVEs and is delivered via Windows Update, WSUS (Security Updates classification),…
KB5127650 Oct 22, 2026 KB5127650 is a Setup Dynamic Update (Setup DU) released October 13, 2026, for Windows 11 versions 24H2, 25H2, and 26H2 (all editions). It addresses security vulnerabilities in Windows setup binaries and related files used during feature updates. It replaces the…
KB5127696 Oct 22, 2026 KB5127696 is the October 13, 2026 cumulative update for .NET Framework 3.5 on Windows 11, version 26H1 (build 28000 and later). It is a security-focused release that requires .NET Framework 3.5 to already be installed and may require a restart…
KB5129194 Oct 22, 2026 KB5129194 is an out-of-band cumulative update for Windows 11, version 26H1 (OS Build 28000.2956), released September 14, 2026. It targets all editions of Windows 11 26H1, and the release is also listed for Arm64 installs via MSU or Microsoft Update…
KB5127216 Oct 22, 2026 KB5127216 is a Setup Dynamic Update (Setup DU) released September 22, 2026 for Windows 11 versions 24H2, 25H2, and 26H2 (all editions). It targets security vulnerabilities in Windows setup binaries and files used during feature updates. It replaces the earlier…
KB5126105 Oct 22, 2026 KB5126105 is the September 8, 2026 security refresh for .NET 9.0, delivering .NET 9.0.20 as a servicing upgrade that replaces 9.0.19. It applies to Windows client and Windows Server systems that have .NET 9.0 installed, and is distributed via Microsoft…
KB5126660 Oct 22, 2026 KB5126660 is a Safe OS Dynamic Update for Windows Server 2025 that improves the Windows Recovery Environment (WinRE). Microsoft lists its release as October 13, 2026. It applies only to Windows Server 2025 and replaces the earlier KB5122883. It installs…
KB5123499 Oct 22, 2026 KB5123499 is a servicing stack update (SSU) for Windows Server 2012 R2 with ESU enrollment, dated September 8, 2026. It makes quality improvements to the component that installs Windows updates and replaces the earlier KB5106412. Restart is not required, and…
KB5127688 Oct 22, 2026 KB5127688 is the October 13, 2026 Security and Quality Rollup for .NET Framework 4.8 on Windows Server 2012 R2 (ESU-eligible systems only). It replaces KB5126148 and KB5121649. Windows Server 2012 R2 is past end of support, so this update is…
KB5127692 Oct 22, 2026 KB5127692 is the October 13, 2026 cumulative update for .NET Framework 3.5 and 4.8.1 on Windows 11 version 23H2. It is delivered via Windows Update, WSUS (Security Updates classification), and the Microsoft Update Catalog. Its scope is limited to systems…
KB5126646 Oct 22, 2026 KB5126646 is the October 13, 2026 cumulative update for Windows Server 2025 (OS Build 26100.33650). It bundles security fixes and non-security changes from the September 2026 preview and out-of-band releases, and requires the SSU KB5126645 (build 26100.33634). It applies to…
KB5126868 Oct 22, 2026 KB5126868 is the October 13, 2026 cumulative update for Windows 10 Version 1607 and Windows Server 2016 (OS Build 14393.9612). The page provided is a release-history index listing this update alongside other Windows 10 and Server builds, and does not…
KB5129236 Oct 22, 2026 KB5129236 is an out-of-band cumulative update for Windows 10 versions 22H2 and 21H2 (OS Builds 19045.7727 and 19044.7727), released September 14, 2026. It is a Windows 10 update, so it applies to Windows 10 systems still on ESU or within…
KB5128928 Oct 22, 2026 KB5128928 is a security and cumulative update for .NET Framework 3.5, 4.8 and 4.8.1 on Windows Server 2022, released October 13, 2026. It is delivered via Windows Update, WSUS, and the Microsoft Update Catalog. Affected systems are Windows Server 2022…
KB5127666 Oct 22, 2026 KB5127666 is the October 13, 2026 cumulative update for .NET Framework 3.5 and 4.7.2 on Windows 10 version 1809 and Windows Server 2019. It is a security-focused .NET-only update that addresses numerous CVEs and is delivered via Windows Update, WSUS,…
KB5124006 Oct 22, 2026 KB5124006 is a September 22, 2026 non-security preview (optional) cumulative update for Windows 11, version 26H1 (OS Build 28000.3086). It applies to all editions and is delivered through gradual and normal rollout phases. It also includes a servicing stack update…
KB5127648 Oct 22, 2026 KB5127648 is the October 13, 2026 cumulative security update for Windows 11 versions 24H2, 25H2, and 26H2 (OS Builds 26100.9711, 26200.9711, 26300.9711). It bundles security fixes, Secure Boot certificate deployment, and a required checkpoint update (KB5043080) plus servicing stack update…
KB5127654 Oct 22, 2026 KB5127654 is a Safe OS Dynamic Update for Windows 11 versions 24H2, 25H2, and 26H2, released October 13, 2026. It applies to all editions of those versions and updates the Windows Recovery Environment (WinRE) to build 10.0.26100.9711. It replaces the…
KB5127684 Oct 22, 2026 KB5127684 is the October 13, 2026 cumulative security update for .NET Framework 4.8 on Windows 10 version 1607 and Windows Server 2016. It is distributed through Windows Update, Windows Update for Business, the Microsoft Update Catalog, and WSUS. The source…
3 / 85