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Microsoft Windows 11 26H1 Update Version OS Build 28000.1575

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Update Summary

KB5077179 updates Windows 11 version 26H1 to OS Build 28000.1575 with the latest security fixes, non-security improvements, and new features. It also includes servicing stack update KB5077868 and addresses graphics, WPA3-Personal Wi-Fi, BitLocker HLK, and TrustedInstaller issues.

Update Details

Security

  • Includes the latest security fixes for Windows 11 version 26H1.
  • Addresses a graphics-related system error on certain GPU configurations that could lead to KERNEL_SECURITY_CHECK_FAILURE.
  • Fixes an issue that could cause TrustedInstaller to stop responding and prevent Windows from starting.

Bug Fixes

  • Fixes a graphics issue affecting certain GPU configurations and dxgmms2.sys.
  • Fixes connectivity issues preventing some devices from joining certain WPA3-Personal Wi-Fi networks.
  • Fixes missing BitLocker HLK tests in the WHCP playlist.
  • Fixes an issue where TrustedInstaller could stop responding and block Windows startup.

New Features

  • Includes available new features in this cumulative update.
  • Starting with Windows 11 version 26H1, .NET Framework 3.5 is no longer a Windows Feature on Demand optional component and must be installed using the standalone installer.

Known Issues

  • Microsoft is not currently aware of any issues with this update.

Hints

  • If previous updates are already installed, only the new updates in this package will be downloaded and installed.
  • Includes servicing stack update KB5077868 for OS Build 28000.1575.
  • AI components updated: Image Search, Content Extraction, Semantic Analysis, and Settings Model to version 1.2511.1224.0.

Links

Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 26H1

Version: OS Build 28000.1575

Vendor release date: Feb 10, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jun 3, 2026

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

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