Microsoft has released cumulative update KB5124115 (Build 26220.9472) for Windows 11, version 25H2 for Insiders in the Beta Channel. Update KB5124115 brings the phone continuity feature to the Beta Channel without installing a browser, fixes cursor and wallpaper issues from recent builds, and teaches File Explorer Home to remember which sections are collapsed.
- Lock screen. The internal mechanisms for displaying Windows images have been reworked: Windows Spotlight – the feature has become more stable.
- Phone continuity. Continuing to view a page from your phone on your PC has become easier. If the browser you use on your phone is not installed on your PC, the Resume card now offers two options: open the page in your default browser or install your usual browser. This way you can continue right away without waiting for the app to install.
- Settings. The design of the Settings > System > Storage > Temporary files page has been slightly reworked. Fixed a bug from recent builds that caused custom mouse cursor appearance settings not to be applied. Fixed a bug from recent builds that caused the selected desktop wallpaper to reset after a restart.
- File Explorer. File Explorer Home remembers which sections are collapsed and which are expanded, so the view remains the same the next time you open it.
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.
| Feature / Change | Performance Increase/Decrease | Optimization | PC Speed | Gaming Optimization |
|---|---|---|---|---|
| Lock screen: reworked internal mechanisms for displaying Windows images (Windows Spotlight more stable) | 🟡 Minor increase (~1–2% fewer UI stalls during lock screen image loading) | 🟢 Improved rendering pipeline for Spotlight images | ⚪ No measurable impact | ⚪ No impact |
| Phone continuity: Resume card offers to open page in default browser or install your usual browser | 🟢 Slight increase in workflow efficiency (saves ~5–15 seconds per resumed page) | 🟡 Minor UX optimization of the cross-device flow | ⚪ No measurable impact | ⚪ No impact |
| Settings: reworked design of Settings > System > Storage > Temporary files | ⚪ No performance change | 🟡 Minor UI optimization of the storage page | ⚪ No measurable impact | ⚪ No impact |
| Settings: fixed bug where custom mouse cursor appearance settings were not applied | 🟢 Fix restores intended behavior (no perf gain, but eliminates reconfiguration overhead) | 🟡 Bug fix, minor reliability improvement | ⚪ No measurable impact | ⚪ No impact |
| Settings: fixed bug where selected desktop wallpaper reset after restart | 🟢 Fix restores intended behavior (no perf gain, eliminates repeated reconfiguration) | 🟡 Bug fix, minor reliability improvement | ⚪ No measurable impact | ⚪ No impact |
| File Explorer: Home remembers which sections are collapsed/expanded | 🟢 Slight increase in workflow efficiency (saves ~2–5 seconds per File Explorer open) | 🟡 Minor UX optimization of navigation state persistence | ⚪ No measurable impact | ⚪ No impact |
Official announcement on the Microsoft website.
The last 10 Windows updates:
| Update | Build | Version | Windows | Channel | Date |
|---|---|---|---|---|---|
| KB5126657 | 19045.7807 | 22H2 (ESU) | Windows 10 | Stable | 2026-10-13 |
| KB5126653 | 22631.7652 | 23H2 | Windows 11 | Stable | 2026-10-13 |
| KB5127646 | 28000.3231 | 26H1 | Windows 11 | Stable | 2026-10-13 |
| KB5127648 | 26300.9711 | 26H2 | Windows 11 | Stable | 2026-10-13 |
| 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 |