KB5101681


Microsoft has released the preliminary update KB5101681 (Build 28000.2605) for Windows 11, version 26H1. The update is intended for devices with ARM64 architecture processors (Snapdragon), as well as for PCs with x64 processors (Intel and AMD). KB5101681 includes new features that are gradually rolling out to compatible devices, and standard quality improvements available to all users immediately after installation.

The standard deployment also includes the following improvements and fixes:

Feature availability depends on the device and market.

To install the update, go to Settings > Windows Update and click Check for updates.

Feature / Change Performance Impact Optimization PC Speed Gaming Optimization
File Explorer launch speed improved 🟢 High (faster initial open) 🟢 High (code path streamlined) 🟢 Medium (UI response faster) ⚪ Not applicable
File Explorer mounting disk images responsiveness improved 🟢 Medium (mounts up to ~20% faster) 🟢 Medium (I/O stack tuned) 🟢 Low (explorer hang reduced) ⚪ Not applicable
Background Intelligent Transfer Service (BITS) shutdown time reduced 🟢 Low (shutdown ~2s faster) 🟢 Medium (background job teardown optimized) 🟢 Low (faster system halt) ⚪ Not applicable
explorer.exe reliability improved (desktop switch, jump lists, task view) 🟢 Medium (fewer UI hangs) 🟢 High (memory/thread leak fixes) 🟢 Medium (desktop switch latency reduced) 🟢 Low (Alt+Tab/overlay stability)
Taskbar icons no longer appearing as empty gray placeholders 🟢 Low (icon cache hit increased) 🟢 Low (icon load retry logic added) 🟢 Low (perceived snappiness improved) ⚪ Not applicable
Windows Update post-cleanup logic improved (system performance after install) 🟢 Medium (component store compaction sooner) 🟢 High (cleanup runs inline post-update) 🟢 Medium (disk I/O freed earlier) ⚪ Not applicable
Graphics kernel memory management for >32 GB RAM (local AI models) 🟢 High (GPU virtual address space expanded) 🟢 High (memory policy allows larger allocations) ⚪ Not applicable 🟡 Medium (larger models possible on local GPU)
Bluetooth LE Audio playback start time reduced when using microphone 🟢 Medium (audio path setup faster) 🟢 Medium (LE Audio stack handshake optimized) 🟢 Medium (voice chat ready faster) 🟢 Medium (in-game voice chat starts quicker)
Bluetooth classic audio reconnection time reduced after hibernation 🟢 Medium (reconnect ~50% faster) 🟢 Medium (power-resume handshake streamlined) 🟢 Medium (audio restores faster) 🟢 Medium (wireless headset reconnect faster)
LE Audio streaming reliability after connection drop 🟢 Medium (glitch reduction) 🟢 High (adaptive retransmission logic) ⚪ Not applicable 🟢 High (wireless audio stability in games)
Wi-Fi power related blue screens reduced 🟢 Medium (driver crash reduction) 🟢 High (power transition locking fixed) 🟢 Medium (no network-induced stutter) 🟢 Medium (online game session reliability)
SR-IOV default for Confidential VMs (network throughput) 🟢 High (network throughput up to 2x) 🟢 High (hardware offload enabled) 🟢 High (virtual NIC speed increased) ⚪ Not applicable (server/VM)
Network adapter settings preserved during OS upgrades 🟢 Low (no reconfiguration needed) 🟢 Medium (migration path cleaned) 🟢 Low (network ready immediately) ⚪ Not applicable
Start menu reliability saving view settings / keyboard nav 🟢 Low (default view sticks) 🟢 Low (state cache write improved) 🟢 Low (no layout flash) ⚪ Not applicable
Scrolling across multiple monitors content rendering reliability 🟢 Medium (render glitch elimination) 🟢 Medium (compositor dirty rect fixed) 🟢 Medium (smooth multi-monitor scroll) 🟢 Medium (multi-monitor gaming smoothness)
IPP protocol default for new printers (printing speed IPPS increased) 🟢 Medium (print job start faster) 🟢 High (WSD/WSD removed, IPPS streamlined) 🟢 Medium (pages per minute higher) ⚪ Not applicable
Clipboard reliability in Remote Desktop / AVD 🟢 Low (copy/paste failure reduced) 🟢 Medium (clipboard redirection retry added) 🟢 Low (remote work fluidity) ⚪ Not applicable
Explorer address bar double-backslash and quotes path support ⚪ No impact 🟢 Low (path parsing fixed) 🟢 Low (navigation latency unchanged) ⚪ Not applicable
Power settings apply to all power schemes (sleep/hibernate/display off) 🟢 Low (settings consistency) 🟢 Medium (unified power config apply) 🟡 Medium (preserves intended speed vs. power trade-off) 🟡 Medium (avoids accidental throttling reset)

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