KB5077223


Microsoft released cumulative update KB5077223 for Windows 11 version 25H2, intended for Windows Insider participants on the Beta channel. This update is a Windows 11 Insider Preview Quality Update (build 26220.7859) and brings several stability improvements and a new feature for Microsoft 365 Family subscribers.

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

Windows Insider participants on the Dev channel who previously used build 26200 will be automatically migrated to build 26220 using the enablement package KB5066383, manual installation via provided links is also available.

Please note that update KB5077223 is distributed in checkpoint format. Such cumulative updates will be smaller in size and will only contain changes made since the last checkpoint, which speeds up download and installation, saves bandwidth and disk space. Therefore, before manual installation, it is necessary to have previously installed updates, namely KB5043080 (build 26100.1742) for Windows 11 version 24H2.

Feature / Change Performance Increase / Decrease Optimization PC Speed Gaming Optimization
Microsoft 365 subscription plan change offer in Settings > Accounts ⚪ No measurable impact (UI addition only) 🟡 Low (adds a settings entry and a recommendation element) ⚪ No impact ⚪ No impact
Improved reliability of app icons in system tray with auto-hide taskbar 🟢 +1–3% perceived responsiveness in shell rendering 🟢 Medium (reduces redundant icon redraw / refresh cycles) 🟢 Slightly smoother taskbar interaction ⚪ No direct impact (minor overlay stability)
Fix for unexpected switching of File Explorer windows 🟢 Removes intermittent UI freezes / focus loss 🟢 Medium (prevents window state reset and unnecessary reloads) 🟢 More stable workflow with multiple Explorer windows ⚪ No impact
Increased reliability of Nearby Sharing for large files 🟢 Reduces transfer failures; better throughput stability 🟢 High (improves large-file chunk handling and connection persistence) 🟡 Low (less background retry overhead after failure) ⚪ No direct impact
Improved stability of Surface Dial settings 🟡 Neutral (stability fix, no raw speed change) 🟢 Low-to-Medium (less settings crash / reconfiguration lag) 🟡 Marginal improvement in device configuration responsiveness ⚪ No impact


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