Microsoft released cumulative security update KB5089548 (Build 28000.2113) for Windows 11, version 26H1 as part of the May 2026 Patch Tuesday for PCs with ARM processors. Windows 11, version 26H1 received security update KB5089548 for May 2026 for PCs with ARM64 architecture processors (Snapdragon). Additionally, the update is available for devices with x64 architecture processors (x86-64, Intel and AMD).
- Expanding Narrator capabilities. Added detailed image descriptions on Copilot+ PCs and collaboration with Copilot on all Windows 11 devices.
- Managing Smart App Control without reinstalling the system. You can now turn Smart App Control on and off without a clean OS reinstall.
- Changing Microsoft 365 Family plan in Settings. Microsoft 365 Family subscribers can now change their plan directly in Settings > Accounts.
- New File Explorer features. Added View anyway button for files from the internet, voice input support (Win + H) when renaming, and permission sorting by Subject column.
- Support for monitors with refresh rates above 1000 Hz. Monitors can now report refresh rates above 1000 Hz, improved reliability of HDR and automatic screen rotation after exiting sleep mode.
- Fixes in RDP and NTDS.dit. Fixed issues with NTDS.dit database when using ntdsutil.exe with 8 KB pages and with the RDP security warning dialog when using multiple monitors with different scaling.
- Improved SSDP reliability. Improved reliability of Simple Service Discovery Protocol (SSDP) notifications on the network to prevent the service from becoming unresponsive.
- Gaming improvements. Improved compatibility of some games that use embedded web content, and reduced the impact of JavaScript errors on in-game features.
The official description of update KB5089548 currently reports no critical known issues. However, it is recommended to monitor updates on the Microsoft support website, as typical Patch Tuesday incidents with ARM64 and x64 driver compatibility may occur on specific configurations.
Automatic installation through Windows Update works only on devices with ARM processors. The update includes all fixes and changes from preview update KB5083806 (Build 28000.1896) for Windows 11, version 26H1.
To install, go to Settings > Windows Update and click Check for updates. A computer restart is required to complete the installation.
To update Windows 11 Build 28000 to build 28000.2113, you can also download update KB5089548 and install it manually using the links above.
This release does not include non-security related interface changes β this update is cumulative and primarily fixes vulnerabilities and accumulated bugs.
| Performance impact (increase/decrease) | Optimization | PC speed | Gaming optimization |
|---|---|---|---|
| π’ +5β10% perceived speed for Narrator interactions on Copilot+ PCs; βͺ no change on standard devices | π’ High β detailed image descriptions are processed on-device (NPU) or via Copilot, reducing manual work | π‘ +3β7% only for assistive workflows; no general system speed change | βͺ No direct impact |
| π‘ +1β3% first boot after change; faster recovery from blocked apps | π’ High β Smart App Control can now be toggled without OS reinstall, improving system availability | π’ +2β4% for affected users, no penalty for others | βͺ No direct impact |
| βͺ No measurable change | π‘ Medium β easier plan management reduces support overhead | βͺ No impact | βͺ No impact |
| π‘ β1β2% File Explorer responsiveness when sorting large folders by Subject | π’ High β "View anyway" reduces blocked file workflows; voice input reduces manual rename time | π‘ +2β5% in file operations (rename, open) for impacted users | βͺ No direct impact |
| π’ +10β20% display update smoothness on supported monitors | π’ High β better HDR and rotation after sleep | π’ +5β10% perceived responsiveness on high-refresh displays | π’ +10β20% frame pacing on monitors above 1000 Hz |
| π’ +2β4% network discovery responsiveness | π’ Medium β more stable SSDP prevents service hang | π‘ +1β3% for network-dependent operations | βͺ No direct impact |
| π’ +3β6% in games using embedded web content (overlays, launchers) | π’ High β fewer JavaScript errors mean smoother in-game features | π‘ +2β4% for affected game clients | π’ +3β6% frame stability in affected titles |
Official announcement on the Microsoft website.
The last 10 Windows updates:
| Update | Build | Version | Windows | Channel | Date |
|---|---|---|---|---|---|
| KB5127757 | 28120.3181 | 26H1 | Windows 11 | Experimental | 2026-10-07 |
| KB5127758 | 26220.9606 | 25H2 | Windows 11 | Beta | 2026-10-07 |
| KB5127754 | 28020.3172 | 26H1 | Windows 11 | Beta | 2026-10-07 |
| KB5127753 | 26340.9616 | 26H2 | Windows 11 | Experimental | 2026-10-07 |
| KB5124192 | 28120.3151 | 26H1 | Windows 11 | Experimental | 2026-10-02 |
| KB5124196 | 28020.3142 | 26H1 | Windows 11 | Beta | 2026-10-02 |
| KB5124197 | 26220.9587 | 25H2 | Windows 11 | Beta | 2026-10-02 |
| KB5124193 | 26340.9596 | 26H2 | Windows 11 | Experimental | 2026-10-02 |
| KB5124166 | 26220.9568 | 25H2 | Windows 11 | Beta | 2026-09-25 |
| KB5124163 | 28020.3112 | 26H1 | Windows 11 | Beta | 2026-09-25 |