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Microsoft Windows 11 23H2 Update Version OS Build 22631.6783

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Update Summary

KB5078883 updates Windows 11 version 23H2 to OS Build 22631.6783 with security fixes and quality improvements from KB5075941. It also adds Secure Boot management enhancements, File History reliability fixes, graphics stability improvements, and a servicing stack update KB5079275. Reference IDs: KB5027397.

Update Details

Security

  • Includes the latest security fixes for Windows operating system.
  • Secure Boot rollout improvements increase coverage for devices eligible to receive new Secure Boot certificates.
  • Adds PowerShell support with Get-SecureBootUEFI -Decoded and Get-SecureBootSVN to help administrators inspect Secure Boot keys, certificates, and firmware policy status.

Bug Fixes

  • Improves File History reliability in Control Panel so files with Chinese characters and Private Use Area characters back up successfully.
  • Improves stability for certain GPU configurations, helping devices shut down more reliably.
  • Improves stability for certain GPU configurations so games and 3D apps run more reliably during intensive graphics use.
  • Improves Windows fonts by adding the new Saudi Riyal currency symbol.
  • Improves reliability of selecting trusted catalog files in Windows System Image Manager by adding a warning dialog.

New Features

  • Adds Get-SecureBootUEFI -Decoded to display Secure Boot keys and certificates in a readable format.
  • Adds Get-SecureBootSVN to check the Secure Boot Security Version Number (SVN) of UEFI firmware and bootloader.

Hints

  • Use EKB KB5027397 to update to Windows 11, version 23H2.
  • If previous updates are already installed, only the new updates in this package will be downloaded and installed.
  • Windows Update does not include Microsoft Store app updates.
  • Microsoft reports no known issues with this update.
  • The package includes servicing stack update KB5079275 for OS Build 22621.6773.

Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 23H2

Version: OS Build 22631.6783

Vendor release date: Mar 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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