Microsoft Windows 11 26H1 Update Version OS Build 28000.1575

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 updates AI components.

• Includes the latest security fixes for Windows 11 version 26H1.
• Addresses a system error related to dxgmms2.sys that could lead to KERNEL_SECURITY_CHECK_FAILURE on some GPU configurations.
• Fixes an issue that could cause TrustedInstaller to stop responding and prevent Windows from starting.

• Fixes an issue that prevented some devices from connecting to certain WPA3-Personal Wi-Fi networks.
• Fixes missing BitLocker HLK tests in the Windows Hardware Compatibility Program playlist.
• Fixes a system error related to dxgmms2.sys on certain GPU configurations.
• Fixes an issue where TrustedInstaller could stop responding and block Windows startup.

• Introduces new features included in this cumulative update.
• .NET Framework 3.5 is no longer a Windows Feature on Demand optional component in Windows 11 version 26H1; it must be installed using the standalone installer.

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

• If previous updates are already installed, only the new updates in this package will be downloaded and installed.
• This release 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.
• .NET Framework 3.5 installation now requires the standalone installer; it is no longer available as an optional Windows Feature on Demand component.

• .NET Framework 3.5 standalone installer information
  https://go.microsoft.com/fwlink/?linkid=2348700

Product Information

Vendor: Microsoft

Product: Windows 11

Version: OS Build 28000.1575

Release date: Feb 10, 2026