Microsoft Windows 11 24H2 Update Version OS Builds 26200.7623 and 26100.7623

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Update Summary

KB5074109 updates Windows 11 version 25H2 and 24H2 to OS Builds 26200.7623 and 26100.7623 with security fixes, quality improvements, and non-security changes from the December preview. It also includes Secure Boot certificate rollout preparation and a security hardening change for credential autofill.

Update Details

Security

  • Includes the latest security fixes for Windows 11 version 25H2 and 24H2.
  • Introduces a security hardening behavior that restricts certain applications from autofilling credentials during remote support sessions or automated authentication workflows.
  • Updates WinSqlite3.dll to address detections by some security software.

Bug Fixes

  • Fixes WSL mirrored networking failures that could cause No route to host errors and block access to corporate resources over VPN.
  • Fixes RemoteApp connection failures in Azure Virtual Desktop environments.
  • Fixes an issue where devices with an NPU might stay powered on when idle.
  • Updates WinSqlite3.dll to resolve false vulnerability detections by some security tools.

New Features

  • Redesigned Start menu continues rolling out to more devices.
  • Windows Deployment Services stops supporting hands-free deployment functionality by default.

Known Issues

  • Password icon might be missing or invisible in lock screen sign-in options.
  • Connection and authentication failures in Azure Virtual Desktop and Windows 365 may occur with the Windows App on specific builds.
  • Some applications may become unresponsive when opening or saving files to cloud-based storage such as OneDrive or Dropbox.

Hints

  • Modem drivers agrsm64.sys, agrsm.sys, smserl64.sys, and smserial.sys are removed; dependent modem hardware will no longer work.
  • Windows quality updates now include targeting data to help eligible devices receive new Secure Boot certificates in a phased rollout.
  • Windows updates do not include Microsoft Store app updates.
  • The update includes servicing stack update KB5071142 (OS Build 26100.7295).
  • Known issue workarounds are provided in KB5074105, KB5077744, and KB5078127.
Product Information

Vendor: Microsoft

Product: Windows 11

Version: OS Builds 26200.7623 and 26100.7623

Release date: Jan 13, 2026

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