KB5101682


Microsoft has released cumulative update KB5101682 (Build 26300.9032) for Windows 11 version 26H2, intended for insiders on the Experimental channel. The build contains an updated signing certificate for preview builds, the current certificate expires on August 11, 2026, so participant devices need to install this or a later build before that date to remain on supported versions and continue receiving future Insider Preview updates. In addition, the update brings improvements for search, smartphone integration, hibernation mode, as well as fixes for the Start menu, taskbar, File Explorer, and other system components.

The build also includes fixes for the Start menu, where a recent issue with crashing when dragging apps was resolved, and for the taskbar, where an instant close of a window thumbnail when hovering in the overflow area was fixed.

In File Explorer, an issue was resolved where the address bar content was cleared when entering edit mode by clicking at the right edge of the bar, stability when dragging files to a disconnected network drive was improved, and an issue was fixed where files on a connected DFS drive were incorrectly identified as coming from the internet, causing a warning about potential computer harm in the preview pane, and copied files received the Mark of the Web label.

Internal changes were made to improve the stability of the Windows spotlight on the lock screen feature.

An issue with automatic backup of File History to SMB network folders was fixed: backup was not working because Windows incorrectly reported invalid credentials when connecting.

The update is installed 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 Gain/Loss Optimization PC Speed Impact Gaming Optimization
Automatic expansion of indexing in Windows Search 🟢 +5-15% search speed (files found faster, no manual rebuilds) 🟢 High – dynamic scope adapts to user activity, reducing stale index overhead 🟡 Minor CPU/disk burst during automatic re-indexing; idle priority, negligible foreground impact ⚪ No direct impact (background service, pauses during full-screen)
Improved Phone Link panel in the Start menu ⚪ No measurable performance delta (UI rendering only) 🟡 Low – hover preview loads cached data; no extra sync overhead ⚪ No impact (Start menu shell extension, minimal memory footprint) ⚪ No impact (does not interact with game processes)
Improved search in the Settings app 🟢 +10-20% relevance speed (less scrolling, faster result selection) 🟢 Medium – broader index aggregation with refined ranking logic ⚪ No system-wide impact (app-scoped query, sub-50ms response) ⚪ Not applicable
Refined adaptive hibernation policy 🟢 Wake latency +30-50% faster resume from modern standby (less full boot cycles) 🟢 High – hibernation triggers tuned to battery thresholds, reducing idle drain 🟢 Faster resume times & extended battery life (≤10% charge early hibernate) 🟡 Marginal – avoids mid-game hibernation interruptions on low battery
Preserving block state in File Explorer Home section 🟢 ~0.2-0.5s saved per session (no re-expand/collapse navigation) 🟡 Low – state cache reduces shell re-render cycles ⚪ Negligible (shell memory state, no I/O) ⚪ 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