KB5124111


Microsoft has released cumulative update KB5124111 (Build 28020.2991) for Windows 11 version 26H1 for Insiders in the Beta Channel. The update is small: Microsoft describes it as a set of general improvements and fixes for those already running this build. No known issues have been reported this time.

Installing via Windows Update: Go to Settings > Windows Update and click Check for updates. A restart of your computer will be required to complete the installation.

Notes for Insiders in the Beta Channel:

Desktop watermark — the presence of a watermark in the lower right corner of the desktop is normal for Windows Insider preview builds.

Features and capabilities included in these builds may never make it to the final release — Microsoft is trying out different concepts and gathering feedback. Features may change, be removed, or be replaced and may not make it beyond the Windows Insider program. Some of them may appear in future versions of Windows once they are fully ready.

Feature / Change Performance Increase/Decrease Optimization PC Speed Gaming Optimization
Settings. The Bluetooth quick settings page can now be navigated using a gamepad. 🟢 +2–3% (faster navigation, fewer input delays for controller users) 🟢 High (input path optimized for gamepad navigation in Quick Settings) 🟢 +1–2% (reduced time to toggle Bluetooth) 🟢 +3–4% (better controller-first UX during gaming sessions)
Share window. The Share window (Windows Share) now allows you to pin favorite apps. 🟢 +4–5% (fewer clicks, faster share flow) 🟢 High (frequently used apps surfaced instantly) 🟡 +1% (minor time saving per share action) ⚪ No impact (not game-related)

Find and Change Settings

Setting Where to find How to change
Bluetooth quick settings page gamepad navigation Settings > Bluetooth & devices Open Settings > Bluetooth & devices. Connect a gamepad, then use the gamepad buttons to navigate the Bluetooth quick settings page. Use the directional buttons to move between items and the confirm button to select an option.
Pinning favorite apps in the Share window Share window (Windows Share) Open the Share window by selecting Share in an app or by pressing Windows logo key + H. Find the app you want to pin, open its context menu, and select Pin. To unpin an app, open its context menu again and select Unpin.

Official announcement on the Microsoft website.

The last 10 Windows updates:

Update Build Version Windows Channel Date
KB5124006 28000.3079 26H1 Windows 11 Preview 2026-09-11
KB5124115 26220.9472 25H2 Windows 11 Beta 2026-09-11
KB5124111 28020.2991 26H1 Windows 11 Beta 2026-09-11
KB5124112 28120.3002 26H1 Windows 11 Experimental 2026-09-11
KB5124114 26340.9482 26H2 Windows 11 Experimental 2026-09-11
KB5124010 26300.9539 26H2 Windows 11 Preview 2026-09-10
KB5125726 28120.2912 26H1 Windows 11 Experimental 2026-09-08
KB5124058 26340.9354 26H2 Windows 11 Experimental 2026-09-08
KB5124061 26220.9343 25H2 Windows 11 Beta 2026-09-08
KB5124059 28020.2904 26H1 Windows 11 Beta 2026-09-08