The January 2026 Windows security update is now available

The January 2026 security update is now available for all supported versions of Windows. We recommend that you install these updates promptly. For more information about the contents of this update, see the release notes, which are easily accessible from the Windows 11 update history page. To learn more about the different types of monthly quality updates, see Windows monthly updates explained. The January 2026 security update is now available for all supported versions of Windows. We recommend that you install these updates promptly. For more information about the contents of this update, see the release notes, which are easily accessible from the Windows 11 update history page. To learn more about the different types of monthly quality updates, see Windows monthly updates explained.    Highlights for the Windows 11, version 25H2 update:  This security update includes improvements that were a part of update KB5072033 (released December 9, 2025). This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. This update addresses an issue where you might experience RemoteApp ​​​​​​​connection failures in Azure Virtual Desktop environments. This might occur after installing KB5070311. This update addresses an issue where devices with a Neural Processing Unit (NPU) might stay powered on when idle. Short on time? Watch our Windows 11 release notes video for this month’s tips. Note: Starting with the January 2026 security update, Windows Server 2025 will have its own KB identifiers and build numbers, separate from Windows 11, versions 24H2 and 25H2. This change improves clarity for administrators. Installation and management processes remain the same. For instructions on how to install this update, see the KB for your operating system listed below:  Windows 11, versions 25H2 and 24H2: KB5074109 Windows 11, version 23H2: KB5073455 Windows 11 Enterprise LTSC 2024: Hotpatch Baseline Windows 10, versions 22H2 and 21H2: KB5073724 Windows 10 Enterprise LTSC 2019 and Windows Server 2019: KB5073723 Windows 10 LTSB 2016 and Windows Server 2016: KB5073722 Windows Server 2025: KB5073379 Windows Server 2025 Datacenter: Azure Edition: Hotpatch Baseline Windows Server 2022: KB5073457 Windows Server 2022 Datacenter: Azure Edition: Hotpatch Baseline Windows Server 2012 R2: Monthly Rollup: KB5073696 […]

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