Knowledgebase Catalog

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KB# Last Updated Description
KB5126030 Sep 26, 2026 KB5126030 is a Setup Dynamic Update for Windows 11 version 23H2 released on September 8, 2026. This security-focused patch addresses vulnerabilities in Windows setup binaries and files utilized during feature updates. The update applies to all editions of Windows 11…
KB5122106 Sep 26, 2026 .NET 10.0 Update released on August 11, 2026, delivering security fixes and maintenance improvements for the .NET 10.0 runtime. This servicing update is available through Microsoft Update for Windows client systems and WSUS/MU Catalog for Windows Server environments. The update…
KB5126106 Sep 26, 2026 .NET 10.0 received a servicing update released on September 8, 2026, containing security fixes and improvements. This update applies to supported Windows client and server operating systems running .NET 10.0. The update replaces previous .NET 10.0 servicing versions upon installation…
KB5120386 Sep 26, 2026 KB5120386 is an August 2026 Monthly Rollup security update for Windows Server 2012 ESU (Extended Security Update). This cumulative patch addresses security vulnerabilities and includes quality improvements, with a particular focus on Secure Boot certificate deployment and device targeting enhancements.…
KB5122876 Sep 26, 2026 KB5122876 was released on September 8, 2026, for Windows 10 version 1809, Windows Server version 1809, and Windows Server 2019, advancing the OS build to 17763.9245. This is a regular monthly security and quality update designed to address vulnerabilities and…
KB5126053 Sep 26, 2026 KB5126053 is a cumulative update for .NET Framework 4.8.1 released on September 8, 2026, targeting Windows 11 version 26H1. This security and reliability patch addresses critical vulnerabilities and improves system stability for applications running on the .NET Framework platform. The…
KB5126422 Sep 26, 2026 KB5126422 is a cumulative security and reliability update for .NET Framework 3.5 and 4.8.1 released on September 8, 2026, targeting Windows Server 2022 systems. This patch addresses critical security vulnerabilities including an elevation of privilege flaw and a remote code…
KB5124012 Sep 26, 2026 KB5124012 is a cumulative security update for Windows 11 version 26H1 released on September 8, 2026, advancing the OS build to 28000.2954. This patch incorporates the latest security fixes and quality improvements, including features and enhancements from the previous month's…
KB5126104 Sep 26, 2026 .NET 8.0 received a servicing update on September 8, 2026, containing security fixes to maintain platform stability and protect against vulnerabilities. This update is available through Microsoft Update for Windows client operating systems and through WSUS and MU Catalog for…
KB5126043 Sep 26, 2026 KB5126043 is a cumulative update for .NET Framework 3.5 and 4.7.2 released on September 8, 2026, targeting Windows 10 version 1809 and Windows Server 2019. This update delivers critical security patches and reliability enhancements to the .NET Framework components on…
KB5126050 Sep 26, 2026 KB5126050 is a cumulative update released on September 8, 2026, for .NET Framework 3.5 and 4.8 on Windows Server 2022. This patch delivers security and reliability improvements to address critical vulnerabilities in the .NET Framework runtime environment. The update is…
KB5129237 Sep 26, 2026 KB5129237 is an out-of-band cumulative security update for Windows Server 2022 released on September 14, 2026, building to OS version 20348.5631. This patch addresses critical issues discovered after the September 2026 security update, particularly affecting Remote Desktop Services stability and…
KB5125758 Sep 26, 2026 KB5125758 is a Safe OS Dynamic Update released on September 22, 2026, for Windows 11 versions 24H2 and 25H2. This update delivers improvements to the Windows Recovery Environment (WinRE), enhancing system recovery capabilities. The update is delivered through standard Windows…
KB5126145 Sep 26, 2026 KB5126145 is a cumulative security and quality update for .NET Framework versions 3.5, 4.8, and 4.8.1 released on September 8, 2026. This patch targets Windows 10 Version 21H2 systems and addresses two critical security vulnerabilities affecting the .NET Framework runtime…
KB5122878 Sep 26, 2026 KB5122878 was released on September 8, 2026, and addresses Windows 10 versions 22H2 and 21H2 with OS Builds 19045.7725, 19044.7725, 19045.7720, and 19044.7720. This cumulative update is part of Microsoft's Extended Security Updates (ESU) program for Windows 10, providing security…
KB5122889 Sep 26, 2026 KB5122889 is a Safe OS Dynamic update for Windows Server 2022 released on September 8, 2026, that focuses on improvements to the Windows Recovery Environment (WinRE). This update replaces the previously released KB5120251 and does not require a device restart…
KB5124011 Sep 26, 2026 KB5124011 is a Safe OS Dynamic Update released on September 8, 2026, for Windows 11 version 26H1 across all editions. This update focuses on improvements to the Windows Recovery Environment (WinRE), which is critical for system recovery and troubleshooting operations.…
KB5123602 Sep 26, 2026 KB5123602 is a servicing stack update (SSU) released on September 8, 2026, for Windows Server 2012 Extended Security Updates (ESU). This update improves the servicing stack component responsible for installing Windows updates. The patch is critical for ensuring devices can…
KB5129235 Sep 26, 2026 KB5129235 is an out-of-band (OOB) non-security cumulative update for Windows Server 2025, released on September 14, 2026 (OS Build 26100.33451). This update addresses critical stability issues that emerged following the September 2026 security update, particularly affecting Remote Desktop Services functionality…
KB5126105 Sep 26, 2026 .NET 9.0 Update KB5126105 was released on September 8, 2026, and delivers security fixes for the .NET 9.0 runtime environment. This servicing update is available for Windows client and server operating systems that have .NET 9.0 installed. The update replaces…
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