IT Knowledge Base & References
KB5078132 — January 2026 Out-of-Band Update for Windows 11
KB5078132 is an out-of-band cumulative update released January 24, 2026, that addresses critical security vulnerabilities and system stability issues affecting Windows 11 version 23H2.
KB5078127 — Out-of-band Cumulative Update for Windows 11 (January 2026)
KB5078127 is an out-of-band cumulative update released January 24, 2026, addressing critical security vulnerabilities and system stability issues in Windows 11 versions 23H2 and 24H2.
KB5077797 — Out-of-band Update for Windows 11 Version 23H2
KB5077797 is an out-of-band cumulative update released January 17, 2026, that addresses critical system stability issues and security vulnerabilities in Windows 11 Version 23H2, updating systems to OS Build 22631.6494.
KB5077744 — January 2026 Out-of-Band Cumulative Update for Windows 11
KB5077744 is an out-of-band cumulative update released January 17, 2026, addressing critical security vulnerabilities and system stability issues in Windows 11 versions 23H2 and 24H2.
KB5077241 — February 2026 Cumulative Update Preview for Windows 11
KB5077241 is a February 2026 cumulative update preview that delivers quality improvements and bug fixes for Windows 11 version 24H2 and 23H2, updating systems to builds 26200.7922 and 26100.7922 respectively.
KB5077239 — February 2026 Cumulative Update for Windows 11 Version 24H2
KB5077239 is a February 2026 cumulative update that addresses multiple security vulnerabilities and system stability issues in Windows 11 Version 24H2, bringing the OS build to 28000.1643.
KB5085516 — March 2026 Cumulative Update for Windows 10 and Windows 11
KB5085516 is a March 2026 cumulative update that addresses critical security vulnerabilities, improves system stability, and resolves compatibility issues affecting Windows 10 version 22H2 and Windows 11 versions 22H2, 23H2, and 24H2.
KB5079473 — March 2026 Cumulative Update for Windows 10 and Windows 11
KB5079473 is a March 2026 cumulative update that addresses multiple security vulnerabilities, improves Windows Search performance, and resolves compatibility issues with modern hardware on Windows 10 and Windows 11 systems.
KB5084597 — March 2026 Out-of-Band Hotpatch Security Update
KB5084597 is an out-of-band hotpatch security update released March 13, 2026, addressing critical vulnerabilities in Windows 11 Version 24H2 and 25H2 systems for both x64 and ARM64 architectures.
KB5074994 — Security Update for Microsoft Exchange Server 2019 CU14
KB5074994 is a February 2026 security update that addresses multiple vulnerabilities in Microsoft Exchange Server 2019 Cumulative Update 14, including remote code execution and elevation of privilege flaws.
KB5078752 — March 2026 Security Update for Windows 10 Version 1809 and Windows Server 2019
KB5078752 is a March 2026 security update that addresses multiple vulnerabilities in Windows 10 Version 1809 and Windows Server 2019, including fixes for Windows Kernel, Remote Desktop Services, and Windows Graphics components.
KB5078766 — March 2026 Security Update for Windows Server 2022
KB5078766 is a March 2026 security update that addresses multiple vulnerabilities in Windows Server 2022, including critical remote code execution flaws and privilege escalation issues affecting server infrastructure.
KB5078737 — March 2026 Security Hotpatch for Windows Server 2022
KB5078737 is a March 2026 security hotpatch update for Windows Server 2022 that addresses multiple security vulnerabilities without requiring a system restart, updating the OS build to 20348.4830.
KB5078734 — March 2026 Security Update for Windows Server 2022 23H2
KB5078734 is a March 2026 security update that addresses multiple vulnerabilities in Windows Server 2022 23H2, including critical remote code execution flaws and privilege escalation issues affecting Server Core installations.
KB5079420 — March 2026 Hotpatch Security Update for Windows 11
KB5079420 is a March 2026 hotpatch security update that addresses critical vulnerabilities in Windows 11 Version 24H2 and 25H2 systems, delivering security fixes without requiring a system restart.
KB5079466 — March 2026 Cumulative Update for Windows 11 Version 26H1
KB5079466 is a March 2026 cumulative update that addresses security vulnerabilities and system stability issues in Windows 11 Version 26H1, updating systems to OS Build 28000.1719.
KB5078736 — March 2026 Security Hotpatch for Windows Server 2025
KB5078736 is a March 2026 security hotpatch update for Windows Server 2025 that addresses critical vulnerabilities without requiring a system restart, updating the OS build to 26100.32463.
KB5078938 — March 2026 Security Update for Windows 10 Version 1607 and Windows Server 2016
KB5078938 is a March 2026 security update that addresses multiple vulnerabilities in Windows 10 Version 1607 and Windows Server 2016, including critical fixes for Windows kernel and networking components.
KB5078774 — March 2026 Monthly Rollup for Windows Server 2012 R2
KB5078774 is a March 2026 monthly rollup update for Windows Server 2012 R2 that includes security fixes, reliability improvements, and compatibility updates for legacy server environments.
KB5078775 — March 2026 Monthly Rollup for Windows Server 2012
KB5078775 is a March 2026 monthly rollup update that addresses multiple security vulnerabilities, system stability issues, and performance improvements for Windows Server 2012 and Windows Server 2012 Server Core installations.
KB5002850 — Security Update for SharePoint Server 2016
KB5002850 is a March 2026 security update that addresses multiple vulnerabilities in SharePoint Server 2016, including remote code execution and elevation of privilege flaws affecting SharePoint Enterprise Server 2016 installations.
KB5002845 — Security Update for SharePoint Server 2019
KB5002845 is a March 2026 security update that addresses multiple vulnerabilities in SharePoint Server 2019, including remote code execution and elevation of privilege flaws affecting SharePoint Foundation and Server components.
KB5002846 — Security Update for Office Online Server
KB5002846 is a March 2026 security update that addresses multiple vulnerabilities in Office Online Server, including remote code execution and information disclosure flaws affecting document rendering and authentication components.
KB5002849 — Security Update for Microsoft Excel 2016
KB5002849 is a security update for Microsoft Excel 2016 that addresses critical vulnerabilities in file processing and memory handling, affecting both 32-bit and 64-bit editions of Excel 2016.