Microsoft has released monthly cumulative updates for all supported Windows systems. These updates primarily address known bugs and vulnerabilities, but may also include new features. The updates are now available through Windows Update. Here are some details.
Patch Tuesday Updates, January 13, 2026
Windows 11
- Windows 11 (version 25H2) - KB5074109 (OS Build 26200.7623). ⬇️ Microsoft Update Catalog.
- Windows 11 (version 24H2) - KB5072033 (OS Build 26100.7623). ⬇️ Microsoft Update Catalog.
- Windows 11 (version 23H2) - KB5073455 (OS Build 22631.6491). ⬇️ Microsoft Update Catalog.
Note: Versions 25H2 and 24H2 use the same base operating system version and have an identical set of system files. This is why they receive the same cumulative updates. The same applies to versions 23H2 and 22H2.
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Windows 10 (ESU)
- Windows 10 2022 Update (version 22H2) - KB5073724 (OS Build 19045.6809). ⬇️ Microsoft Update Catalog.
- Windows 10 November 2021 Update (version 21H2) - KB5073724 (OS Build 19044.6809). ⬇️ Microsoft Update Catalog.
- Windows 10 October 2018 Update (version 1809) - KB5073723 (OS Build 17763.8276). ⬇️ Microsoft Update Catalog.
- Windows 10 Anniversary Update (version 1607) - KB5073722 (OS Build 14393.8783). ⬇️ Microsoft Update Catalog.
Official support for Windows 10 ended on October 14, 2025. Microsoft will continue to provide security updates for the operating system, but through the Extended Support Updates (ESU) program, which requires a fee or certain conditions. For more information, follow this link.
What's new in KB5074109 for Windows 11 versions 24H2 and 25H2 (builds 26100.7623 and 26200.7623)
Compatibility
- This update removes the following modem drivers: agrsm64.sys (x64), agrsm.sys (x86), smserl64.sys (x64), and smserial.sys (x86). Hardware that depends on these specific drivers will no longer work on Windows.
Net
- Fixed an issue where network mirroring in Windows Subsystem for Linux (WSL) could fail, causing "No route to host" errors and blocking access to corporate resources over VPN connections even if the Windows host remained connected. This issue could occur after installing update KB5067036.
- Fixed an issue that could cause RemoteApp connection failures in Azure Virtual Desktop (AVD) environments. This could occur after installing update KB5070311.
Power and battery
- Fixed an issue where devices with a neural processing unit (NPU) might remain on while in standby mode, negatively impacting power efficiency.
Secure Boot
- Windows cumulative updates now include a high-confidence subset of data to identify devices eligible for automatic acquisition of new Secure Boot certificates. Devices will receive the new certificates only after demonstrating a sufficient number of successful update signals, ensuring a secure and phased rollout.
Windows Deployment Services (WDS)
- Changes have been made that will remove hands-free deployment support from WDS by default. Detailed guidance for IT administrators is available in the Windows Deployment Services (WDS) Hands-Free Deployment Hardening Guidance document.
WinSqlite3.dll
- A key Windows component, WinSqlite3.dll, has been updated. Previously, some security software might incorrectly identify this component as vulnerable.
- Note WinSqlite3.dll is a separate component and differs from sqlite3.dll, which is located in application-specific directories and is not a Windows system component. If security applications continue to identify sqlite3.dll as vulnerable, contact the developer of the application that uses this file for an update. If sqlite3.dll is used by a Microsoft application, install the latest version of the application from the Microsoft Store.
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