Microsoft Windows 11 26H1 Update Version OS Build 28000.2608

KB5101681 for Windows 11 version 26H1 (OS Build 28000.2608) is a non-security preview update with quality improvements, new features, and reliability fixes. It also includes KB5101747 servicing stack update and AI components version 1.2608.856.0. Reference IDs: KB5101649.

• File Explorer performance and reliability improvements, including faster launch, better responsiveness when mounting disk images, improved address bar behavior, and fixes for duplicated OneDrive Favorites and rename issues.
• Bluetooth reliability improvements for audio devices, call audio, LE Audio, device removal, and Bluetooth settings stability.
• Networking fixes for virtualized environments, Wi-Fi power-related bug checks, WWAN connectivity, IPv6 VPN support, third-party VPN compatibility, and preserving adapter settings across OS upgrades.
• General reliability improvements for explorer.exe, taskbar icon rendering, OneDrive sync navigation, shell extension app launches, acrylic blur effects, and login/lock screen credential provider behavior.
• Fixes for Win32 application crashes when creating a new project, DFS mapped drive files being treated as Internet-originated, PowerShell app naming compatibility, and SMB File History backups failing with false invalid credentials.
• Improved reliability of the inbox HD Audio driver, BITS shutdown, color profile persistence, search group policy settings, and scrolling across multi-monitor apps.

• Windows Update now offers a calendar-based pause experience with an end date of up to 35 days.
• Widgets gets a quieter default experience with reduced hover behavior, minimized badges, improved customization, and better reliability.
• Accessibility adds screen tint controls and more precise Magnifier zoom entry and increment settings.
• File Explorer Home quick actions now support work and school accounts (Entra ID).
• Voice access and voice typing now support French, German, and Spanish with real-time text correction.
• Windows now keeps Bluetooth microphone mute state in sync between the audio mixer and HFP.
• New printer installations use IPP by default when supported, with a setting to control Windows Ready Print behavior.
• Touchpad settings now let users customize the right-click zone size.
• Remote Desktop enablement dialog has a refreshed design.
• Graphics Kernel memory-management changes allow PCs with more than 32 GB of RAM to run larger local AI models.

• Gradual rollout features may not be available on all devices at the same time.
• New printer installations use Internet Printing Protocol (IPP) by default when supported; the behavior can be controlled in Settings > Bluetooth & devices > Printers & scanners > Default install printers using Windows Ready Print.
• The touchpad right-click zone setting is only available on touchpads with a pressable surface, and a manufacturer-provided Custom option may appear if supported.
• Location settings such as Default location and Allow location override are greyed out when location services are turned off.
• Microsoft combines the latest servicing stack update (SSU) with the latest cumulative update (LCU).
• This update includes AI components version 1.2608.856.0 for Image Search, Content Extraction, Semantic Analysis, and Settings Model.

Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 26H1

Version: OS Build 28000.2608

Vendor release date: Jul 28, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jul 29, 2026

Description: Client operating system for modern desktop and enterprise environments.