🔵KB5124008 update for Windows 11 24H2 and 25H2 delivers a broad set of fixes, design tweaks, and new

🔵KB5124008 update for Windows 11 24H2 and 25H2 delivers a broad set of fixes, design tweaks, and new features. It expands taskbar customization with new screen positions, a smaller taskbar option, and easier access to Taskbar Behavior settings. The Start menu gains more layout control, section toggles, and an option to hide the user name and profile picture.

Search, File Explorer, virtual desktops, display settings, Task Manager, and touchpad reliability are also improved. Security and platform changes include new Admin Guard protection, stronger Secure Boot certificate rollout support, post-quantum ML-KEM cryptography, and process isolation for Microsoft Execution Containers.

The update also adds app update support through Windows Update, improves Windows installation and Autopilot setup, and includes fixes for mouse, personalization, Teams and Outlook on Arm64, Remote Desktop audio, Japanese input, and Morocco’s time zone change.

🔵KB5124012 cumulative update for Windows 11 version 26H1 (build 28000.2954) delivers the fixes and improvements from the earlier optional KB5120996, plus new refinements across the system. Highlights include better File Explorer behavior, smarter app and Settings search, new Voice Access speech modes and Korean support, improved Widgets and Lock Screen options, touchpad gestures, Start menu and taskbar reliability, and stronger magnifier, Windows Hello, and battery settings.

The update also improves Windows Update performance, system sounds, time zone accuracy, DHCP reliability, printing speed, clipboard behavior, and overall stability for Explorer, sign-in screens, and multitasking. Security updates are included, along with fixes for Teams and Outlook on Arm64, Remote Desktop audio, HDR on some Surface devices, and touchpad issues. A notable change also updates Morocco’s standard time ahead of its September 20, 2026 transition to UTC+00:00.