Microsoft has released cumulative update KB5124112 (Build 28120.3002) for Windows 11, version 26H1, for Insiders in the Experimental channel. The update is available through Windows Update and includes a number of improvements to the interface and system features, while also retaining a known issue with launching games.
- Quick Settings navigation with a gamepad. The Bluetooth Quick Settings page can now be navigated using a gamepad.
- Pinning favorite apps in the Share window. The Share window (Windows Share) now allows you to pin favorite apps.
Games protected by Easy Anti-Cheat (EAC) may fail to launch and display the error "The application was unable to start correctly (0xc000007b)." The issue has carried over from the previous build, and Microsoft continues to work on a fix.
To install via Windows Update: go to Settings > Windows Update and click Check for updates. A computer restart will be required to complete the installation.
| Feature / Change | Performance Gain or Loss | Optimization | PC Speed | Gaming Optimization |
|---|---|---|---|---|
| Quick Settings navigation with a gamepad. The Bluetooth Quick Settings page can now be navigated using a gamepad. | 🟡 Minimal (no measurable performance change) | 🟡 Slight (faster access to Bluetooth settings, no system-level optimization) | ⚪ No impact (navigation convenience only) | 🟡 Low (helps controller users toggle Bluetooth devices faster, no FPS or latency change) |
| Pinning favorite apps in the Share window. The Share window (Windows Share) now allows you to pin favorite apps. | ⚪ No impact (UI convenience feature) | 🟡 Slight (reduces time to share files, no background optimization) | ⚪ No impact (does not affect system speed) | ⚪ No impact (not gaming-related) |
| Games protected by Easy Anti-Cheat (EAC) may fail to launch and display the error "The application was unable to start correctly (0xc000007b)." The issue has carried over from the previous build, and Microsoft continues to work on a fix. | 🔴 Negative (EAC-protected games may not launch at all) | 🔴 Regression (known issue carried over, not yet fixed) | ⚪ No impact on general PC speed (only affects affected games) | 🔴 High negative (blocks launch of many popular multiplayer games such as Fortnite, Apex Legends, Rust, and others using EAC) |
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 |