KB5079452


Microsoft released cumulative update KB5079452 (Build 28020.1737) for Windows 11, version 26H1. Windows 11 Insider Preview build 28020.1737 – a build that belongs to the br_release development branch, is available to Windows Insider program participants on the Canary Channel.

Users of this channel will now receive updates for Windows 11, version 26H1 (Build 28020), which is activated based on Windows 11, Version 26H1 (Build 28000) using the Feature Enablement package KB5073122. An additional update Build 28020.1738 (KB5084491) is being rolled out for Canary Channel participants. It does not bring new features and is used to test the servicing pipeline of builds.

Installation via Windows Update: Go to Settings > Windows Update and click Check for updates. A computer restart is required to complete installation.

Builds released to the Canary Channel represent the latest platform changes at early development stages and are not tied to any specific Windows release. Features and functionality included in these builds may never ship in the final version, as Microsoft tries different concepts and gathers feedback. Features may change, be removed, or be replaced, and some may never become available outside the Windows Insider program. However, when these features are ready, they may appear in future Windows releases.

Many features in the Canary Channel are distributed using Control Feature Rollout technology. Initially they become available to a small group of insiders, and then their availability expands as feedback is received and analyzed to assess how they are perceived before becoming available to all participants of this channel. Some features under active development that we preview to insiders may not be fully localized. Localization will be completed as features are finalized.

If you notice localization issues in your language, please report them via the Feedback Hub app. Some features may first appear in Dev and Beta channels before appearing in the Canary Channel. To leave the Canary Channel, a clean installation of Windows 11 is required. Please remember that insiders cannot switch to a channel that receives builds with lower build numbers without performing a clean installation of Windows 11 due to technical requirements.

Feature / Change Performance Increase or Decrease Optimization PC Speed Gaming Optimization
Pen settings improvements (button end settings) ⚪ No measurable impact 🟢 High (more intuitive configuration) ⚪ No change ⚪ No impact
Copilot key option for pen button ⚪ No measurable impact 🟡 Medium (integration convenience) ⚪ No change ⚪ No impact
Feedback Hub entry for pen issues ⚪ No measurable impact 🟡 Medium (faster diagnostics) ⚪ No change ⚪ No impact

Find and Change Settings

Setting Where to find How to change
Pen Settings Settings > Bluetooth & devices > Pen & Windows Ink Open Settings > Bluetooth & devices > Pen & Windows Ink. Under "Pen button end settings," choose the action for the pen end button. Select the new "Copilot key" option to make the pen end button launch the same application as the Copilot key.
Feedback Feedback Hub (Win + F) > Devices and drivers > Bluetooth – Keyboard, mouse and pen Press Win + F to open Feedback Hub. Navigate to Devices and drivers > Bluetooth – Keyboard, mouse and pen. Submit feedback about the pen settings or related Bluetooth input devices.

Official announcement on the Microsoft website.

The last 10 Windows updates:

Update Build Version Windows Channel Date
KB5121157 28020.2818 26H1 Windows 11 Beta 2026-08-31
KB5121158 28120.2824 26H1 Windows 11 Experimental 2026-08-31
KB5121794 26300.9278 26H2 Windows 11 Preview 2026-08-27
KB5121132 28120.2760 26H1 Windows 11 Experimental 2026-08-21
KB5124040 26220.9223 25H2 Windows 11 Beta 2026-08-21
KB5124042 26340.9233 26H2 Windows 11 Experimental 2026-08-21
KB5121106 28020.2731 26H1 Windows 11 Beta 2026-08-17
KB5121109 28120.2738 26H1 Windows 11 Experimental 2026-08-17
KB5124036 26220.9202 25H2 Windows 11 Beta 2026-08-17
KB5124038 26340.9212 26H2 Windows 11 Experimental 2026-08-17