Microsoft has released a new cumulative update for Windows 11 — identified as KB5074109, bringing OS Builds 26200.7623 and 26100.7623 to devices running both Windows 11 version 25H2 and 24H2. This update includes the latest security fixes, general improvements, and several quality enhancements to keep your device up to date and running smoothly.
📌 What is KB5074109?
This is a Patch Tuesday cumulative update that:
Delivers the latest security and quality fixes for Windows 11.
Includes non-security improvements from last month’s optional preview update.
Applies to both Windows 11 version 25H2 and 24H2, ensuring broad coverage across modern Windows 11 editions.
Microsoft has also adjusted its update naming to make titles simpler and easier for users to understand — focusing on date and KB number while dropping unnecessary technical elements.
🔒 Important Security-Related Notes
💡 As part of this update, Microsoft has included a phased deployment of new Secure Boot certificates to help devices continue booting securely without interruptions. Certificates will be delivered only after successful update signals are detected, keeping rollouts safe and stable.
⚠️ Secure Boot Certificate Expiration: Microsoft warns that many Secure Boot certificates used by Windows devices are set to expire starting June 2026. Users and administrators should review Microsoft’s guidance to prevent boot issues later this year.
🧰 Fixes & Improvements Included
This update addresses the following areas:
Networking & Compatibility:
Fixes issues with Windows Subsystem for Linux networking errors that prevented access to corporate resources. It also resolves certain RemoteApp connection failures in Azure Virtual Desktop environments.Power & Battery:
Addresses a problem where devices with a Neural Processing Unit (NPU) stayed powered on when idle, improving energy efficiency.Core Components:
Patches and updates key parts of Windows, such as the WinSqlite3.dll component, which could be misidentified as vulnerable by some security software.Deployment Services:
Windows Deployment Services (WDS) now disables hands-free deployment by default, helping administrators maintain stronger control over automated setups.Driver Changes:
Certain older modem drivers (e.g., agrsm64.sys, antiserial drivers) have been removed in this update — systems depending on them may lose support for that hardware.
📥 How to Get KB5074109
This update is rolling out automatically through Windows Update and Microsoft Update. On most devices it will download and install in the background, requiring a restart to complete.
If you prefer manual control:
Go to Settings → Windows Update
Click Check for updates
Let Windows download and install the update
🧠 Real-World Reports After Updating
Some users online have reported mixed experiences after installing KB5074109:
Bug fixes: Many report fixes like correcting the “Let me decide for each file” dialog in File Explorer that wasn’t working properly before the update.
Installation issues: A few people experienced problems where the update failed to install, showing errors like “Something didn’t go as planned,” and had to retry or use troubleshooting tools.
Remote desktop problems: There are reports that Azure Virtual Desktop (AVD) connections stopped working on some machines until the update was removed.
⚠️ Note: These are community reports and may vary by system configuration.
🧾 Summary
KB5074109 delivers Microsoft’s January 2026 security and quality improvements for Windows 11, focusing on stability, core component fixes, and a safer end-to-end Windows experience. While most devices should install it without issue, it’s always good to back up your system before applying major updates, especially on business or production machines.
Download link:
You can download and manually install Windows 11 update KB5074109 by clicking here. If you need help in understanding how to install these updates manually on your PC, you can refer to our step-by-step noob-friendly tutorial.
