Microsoft released cumulative update KB5079382 for Windows 11, version 25H2 for insiders on the Beta Channel – Windows 11 Insider Preview Quality Update (26220.7961). A preview build of Windows 11 Insider Preview Build 26220.7961 (KB5079382) was released. Users on this channel will now receive Windows 11, version 25H2 updates, which are available using the enablement package KB5066383 (build 26220.xxx).
- Administrator Protection. In Windows 11 Insider Preview Build 26220.7961 (Beta Channel), Microsoft re-enables the Administrator Protection feature. It is designed to protect user administrative rights and reduce risks associated with the constant presence of administrator rights in the system. The feature uses a just-in-time model for granting administrator privileges. A user with administrator rights can still perform all administrative tasks, but the privileges themselves are activated only while a specific operation is being performed. This approach reduces the likelihood of administrative rights abuse and improves system security. The feature is disabled by default. Administrators can enable it via OMA-URI in Microsoft Intune or through Group Policies.
- File Sharing (Drag tray improvement). Based on user feedback, Microsoft has refined the Drag tray interface. A more compact peek view is now used, reducing the chance of the tray appearing accidentally and making it easier to close when working near the top of the screen.
- File Explorer – voice input when renaming. When renaming files in File Explorer, you can now use voice input (Win + H).
- File Explorer – fixing white flashes. Fixed a white flash when opening new File Explorer windows or tabs if it is set to open the "This PC" section. Also fixed white flashes when resizing File Explorer interface elements.
- File Explorer – preview reliability. Improved reliability of unlocking files downloaded from the internet so they can be correctly viewed in the File Explorer preview pane.
Installation via Windows Update: go to Settings > Windows Update and click Check for updates. A computer restart is required to complete the installation.
| Feature / Change | Performance Increase/Decrease | Optimization | PC Speed Impact | Gaming Optimization |
|---|---|---|---|---|
| Administrator Protection | ⚪ No direct impact (slight overhead only during privilege elevation) | 🟢 High (just-in-time admin rights reduce attack surface) | ⚪ Neutral (no constant background load) | ⚪ No direct impact |
| File Sharing (Drag tray improvement) | 🟢 Slight increase (less accidental UI interference) | 🟡 Medium (compact peek view improves workflow) | 🟢 Minimal improvement (less UI lag near screen top) | ⚪ No direct impact |
| File Explorer – voice input when renaming | ⚪ No direct impact | 🟢 High (hands-free file management) | ⚪ Neutral | ⚪ No direct impact |
| File Explorer – fixing white flashes | 🟢 Slight increase (smoother rendering) | 🟡 Medium (visual stability improved) | 🟢 Minimal improvement (less UI stutter) | ⚪ No direct impact |
| File Explorer – preview reliability | 🟢 Slight increase (faster file preview loading) | 🟡 Medium (better handling of downloaded files) | 🟢 Minimal improvement (reduced wait for previews) | ⚪ No direct impact |
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 |