Microsoft KB articles
Official Windows update notes, documented: improvements, known issues, and how to get each update, with the KB number, OS build and release date at a glance.
197 articles
KB5058411 - Windows 11 Version 24H2 Security Update (OS Build 26100.4061)
May 13, 2025 security update for Windows 11 version 24H2, bringing OS build 26100.4061 with audio, Eye Controller, and SBAT fixes.
KB5058500 Hotpatch for Windows Server 2022 Datacenter Azure Edition (OS Build 20348.3630)
May 13, 2025 hotpatch security update for Windows Server 2022 Datacenter: Azure Edition, bringing the OS to build 20348.3630 with miscellaneous internal security improvements.
KB5055627: Windows 11 Version 24H2 Preview Update (OS Build 26100.3915) - April 25, 2025
Optional preview update for Windows 11 version 24H2, releasing OS build 26100.3915 on April 25, 2025, with AI feature additions, bug fixes, and a bundled servicing stack update.
KB5055629: Windows 11 OS Builds 22621.5262 and 22631.5262 Preview (April 22, 2025)
Optional preview update for Windows 11 versions 22H2 and 23H2, releasing April 22, 2025, with File Explorer, Narrator, Phone Link, Widgets, and bug fixes.
KB5059092 (OS Build 20348.3566): Windows Server 2022 Out-of-Band Update - April 16, 2025
Out-of-band quality update for Windows Server 2022 (OS Build 20348.3566) released April 16, 2025, fixing a Hyper-V isolation container startup failure.
KB5058919: Windows 11 22H2 and 23H2 Out-of-Band Update (OS Builds 22621.5192 and 22631.5192)
Out-of-band non-security update for Windows 11 22H2 and 23H2, released April 11, 2025, addressing a Group Policy audit logon display issue.
KB5058920 (OS Build 20348.3561) Out-of-Band Update for Windows Server 2022 - April 11, 2025
Out-of-band non-security update for Windows Server 2022 (OS Build 20348.3561), released April 11, 2025, fixing a Group Policy audit logon display issue.
KB5055523: Windows 11 24H2 Security Update (OS Build 26100.3775) - April 8, 2025
April 8, 2025 cumulative security update for Windows 11 version 24H2, bringing OS build to 26100.3775 with authentication, DST, and security fixes.
April 8, 2025 - KB5055528 (OS Builds 22621.5189 and 22631.5189)
April 8, 2025 security update for Windows 11 versions 22H2 and 23H2, bringing OS builds to 22621.5189 and 22631.5189 with security fixes and DST changes.
KB5055526: Windows Server 2022 Security Update (OS Build 20348.3453) - April 8, 2025
April 8, 2025 cumulative security update for Windows Server 2022, bringing OS build to 20348.3453 with DST, IIS, and Kerberos protections.
KB5053656 (OS Build 26100.3624) Preview - Windows 11 24H2, March 27 2025
Optional preview update for Windows 11 24H2 (OS Build 26100.3624), released March 27 2025, delivering quality improvements, new Copilot+ PC features, and bug fixes.
KB5053657 Preview Update for Windows 11 22H2 and 23H2 (OS Builds 22621.5126 and 22631.5126) - March 25, 2025
Optional preview update for Windows 11 22H2 and 23H2 releasing March 25, 2025, delivering quality improvements, new input features, and bug fixes.
March 11 2025 Hotpatch Public Preview KB5053636 (OS Build 26100.3403)
Hotpatch public preview update for Windows 11 Enterprise LTSC 2024, OS build 26100.3403, released March 11, 2025. Fixes x64 app crashes on Arm64 devices.
KB5053598: Windows 11 Version 24H2 Security Update (OS Build 26100.3476) - March 2025
March 11, 2025 security update for Windows 11 version 24H2, delivering OS build 26100.3476 with miscellaneous security improvements and a bundled servicing stack update.
KB5053602: Windows 11 Security Update for OS Builds 22621.5039 and 22631.5039 (March 2025)
March 11, 2025 security update for Windows 11 versions 22H2 and 23H2, bringing OS builds to 22621.5039 and 22631.5039 with miscellaneous internal OS security improvements.
KB5053638: March 2025 Hotpatch for Windows Server 2022 Datacenter Azure Edition (OS Build 20348.3270)
March 11, 2025 hotpatch security update for Windows Server 2022 Datacenter: Azure Edition, bringing OS build 20348.3270 with miscellaneous internal OS security improvements.
KB5053603: Windows Server 2022 Security Update (OS Build 20348.3328) - March 2025
March 11, 2025 security update for Windows Server 2022, bringing OS build to 20348.3328. Addresses DST changes, OpenSSH startup failure, GB18030-2022 support, and an Azure VNET metering bug.
KB5052093: Windows 11 Version 24H2 Preview Update (OS Build 26100.3323) - February 25, 2025
Optional preview update for Windows 11 version 24H2, releasing OS build 26100.3323 on February 25, 2025, with quality improvements, new features, and bug fixes.
KB5052094: Windows 11 Preview Update - OS Builds 22621.4974 and 22631.4974 (February 25, 2025)
Optional preview update for Windows 11 22H2/23H2 releasing build 22621.4974 and 22631.4974 with taskbar, File Explorer, Narrator, and accessibility fixes.
February 11 2025 Hotpatch Public Preview KB5052105 (OS Build 26100.3107)
Hotpatch public preview security update for Windows 11 Enterprise LTSC 2024, releasing OS build 26100.3107 on February 11, 2025.