Name: Microsoft Windows 11 26H1
Brand: Microsoft

KB5127653 updates Windows 11 version 26H1 to OS Build 28000.3365 with new File Explorer, accessibility, recovery, personalization, and administration features. It also delivers quality fixes for Remote Desktop, BitLocker, Always On VPN, WSL, audio, certificates, and application control.

Security update Microsoft Windows 11 26H1

Oct 28, 2026

OS Build 28000.3365

Security update Microsoft Windows 11 26H1

Oct 28, 2026

OS Build 28000.3365

KB5134134 is a non-security out-of-band cumulative update for Windows 11 version 26H1. It adds updated trusted root certificate data for devices that cannot receive automatic certificate trust list updates.

Security update Microsoft Windows 11 26H1

Oct 26, 2026

OS Build 28000.3237; AI components 1.2608.951.0

Security update Microsoft Windows 11 26H1

Oct 26, 2026

OS Build 28000.3237; AI components 1.2608.951.0

KB5127646 updates Windows 11 version 26H1 to OS Build 28000.3231 with security improvements, Secure Boot certificate deployment enhancements, ReFS auditing controls, and fixes for Explorer, VPN, Storage Spaces Direct, and gaming issues.

Security update Microsoft Windows 11 26H1

Oct 13, 2026

OS Build 28000.3231

Security update Microsoft Windows 11 26H1

Oct 13, 2026

OS Build 28000.3231

KB5124006 for Windows 11 version 26H1 (OS Build 28000.3086) delivers quality improvements, new taskbar, Start, Search, and File Explorer features, plus Administrator protection and other platform enhancements. It also includes a File History fix and notes known issues with domain trust and USB Audio Class 1.0 devices. Reference IDs: KB5124005, KB5124012.

Security update Microsoft Windows 11 26H1

Sep 22, 2026

OS Build 28000.3086

Security update Microsoft Windows 11 26H1

Sep 22, 2026

OS Build 28000.3086

KB5129194 for Windows 11, version 26H1 (OS Build 28000.2956) is an out-of-band update. It adds protections for CVE-2026-62721 and CVE-2026-85921 and fixes RDS, Hyper-V Plan9 sharing, and USB audio multichannel issues. Reference IDs: KB5124012, KB5125104.

Security update Microsoft Windows 11 26H1

Sep 14, 2026

OS Build 28000.2956

Security update Microsoft Windows 11 26H1

Sep 14, 2026

OS Build 28000.2956

KB5124012 for Windows 11 version 26H1 updates OS Build 28000.2954 with the latest security fixes and non-security improvements from KB5120996. It also improves Secure Boot targeting, fixes Teams and Outlook crashes on Arm64, and addresses Remote Desktop audio redirection issues. Reference IDs: KB5125104.

Security update Microsoft Windows 11 26H1

Sep 8, 2026

OS Build 28000.2954

Security update Microsoft Windows 11 26H1

Sep 8, 2026

OS Build 28000.2954

Windows 11, version 26H1 is for new devices with select silicon starting early 2026. Microsoft says devices on earlier Windows 11 versions will not be offered 26H1 through Windows Update or as an in-place upgrade.

Security update Microsoft Windows 11 26H1

Aug 29, 2026

Windows 11, version 26H1

Security update Microsoft Windows 11 26H1

Aug 29, 2026

Windows 11, version 26H1

KB5121000 for Windows 11, version 26H1 updates OS Build 28000.2704 with the latest security fixes and non-security improvements from prior releases. It also references the August 2026 Security Updates guide and includes servicing stack update KB5121292.

Security update Microsoft Windows 11 26H1

Aug 11, 2026

OS Build 28000.2704

Security update Microsoft Windows 11 26H1

Aug 11, 2026

OS Build 28000.2704

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.

Microsoft Windows 11 26H1

Jul 28, 2026

OS Build 28000.2608

Microsoft Windows 11 26H1

Jul 28, 2026

OS Build 28000.2608

KB5101649 for Windows 11 version 26H1 (OS Build 28000.2525) includes July 2026 security updates, non-security improvements from KB5095051 and KB5095091, and servicing stack update KB5121292. It also adds RDP SHA-2 thumbprint support and security hardening for TDI transport registration.

Security update Microsoft Windows 11 26H1

Jul 14, 2026

OS Build 28000.2525

Security update Microsoft Windows 11 26H1

Jul 14, 2026

OS Build 28000.2525

KB5095091 updates Windows 11 version 26H1 to OS Build 28000.2340 with quality improvements, new AI-related UI features, and fixes for File Explorer, Windows Hello, USB, and more. It also includes a known issue affecting Microsoft Office launches from some third-party apps. Reference IDs: KB5101277.

Security update Microsoft Windows 11 26H1

Jun 23, 2026

OS Build 28000.2340

Security update Microsoft Windows 11 26H1

Jun 23, 2026

OS Build 28000.2340

KB5095051 (OS Build 28000.2269) is a cumulative update for Windows 11 version 26H1 that includes the latest security fixes, non-security improvements from prior preview releases, and servicing stack update KB5101277. Reference IDs: KB5089548, KB5089570.

Security update Microsoft Windows 11 26H1

Jun 9, 2026

OS Build 28000.2269

Security update Microsoft Windows 11 26H1

Jun 9, 2026

OS Build 28000.2269

KB5089570 updates Windows 11 version 26H1 to OS Build 28000.2179 with new features, reliability improvements, and security-related driver policy changes. It also adds Secure Boot targeting and policy controls, plus AI component updates. Reference IDs: KB5083806.

Security update Microsoft Windows 11 26H1

May 26, 2026

OS Build 28000.2179

Security update Microsoft Windows 11 26H1

May 26, 2026

OS Build 28000.2179

KB5089548 updates Windows 11, version 26H1 to OS Build 28000.2113 with the latest security fixes, non-security improvements from prior preview releases, and servicing stack updates. It also improves SSDP reliability and game compatibility. Reference IDs: KB5083768, KB5083806, KB5092761.

Security update Microsoft Windows 11 26H1

May 12, 2026

OS Build 28000.2113

Security update Microsoft Windows 11 26H1

May 12, 2026

OS Build 28000.2113

KB5083806 (OS Build 28000.1896) is a non-security preview update for Windows 11 version 26H1. It adds new AI-powered and Settings features, improves reliability across File Explorer, display, printing, and Windows Hello, and includes servicing stack update KB5088834. Reference IDs: KB5074105, KB5083768.

Security update Microsoft Windows 11 26H1

Apr 30, 2026

OS Build 28000.1896

Security update Microsoft Windows 11 26H1

Apr 30, 2026

OS Build 28000.1896

KB5083768 updates Windows 11, version 26H1 with the latest security improvements and non-security fixes from KB5079466. It adds Secure Boot status visibility, improves SMB compression over QUIC, and strengthens phishing protection for Remote Desktop (.rdp) files. Reference IDs: KB5088834, KB5083806.

Security update Microsoft Windows 11 26H1

Apr 14, 2026

OS Build 28000.1836

Security update Microsoft Windows 11 26H1

Apr 14, 2026

OS Build 28000.1836

KB5079489 (OS Build 28000.1764) is a non-security Windows 11 version 26H1 preview update with quality improvements, new features, and servicing stack update KB5085536. Microsoft reports no known issues.

Security update Microsoft Windows 11 26H1

Mar 26, 2026

OS Build 28000.1764

Security update Microsoft Windows 11 26H1

Mar 26, 2026

OS Build 28000.1764

KB5079466 updates Windows 11, version 26H1 to OS Build 28000.1719 with security improvements and non-security fixes from the February preview release. It also improves Secure Boot certificate targeting, WDAC COM object allowlisting, and Windows System Image Manager catalog trust handling. Reference IDs: KB5077239, KB5078262.

Security update Microsoft Windows 11 26H1

Mar 10, 2026

OS Build 28000.1719

Security update Microsoft Windows 11 26H1

Mar 10, 2026

OS Build 28000.1719

KB5077239 (OS Build 28000.1643) is a non-security preview update for Windows 11 version 26H1. It adds Secure Boot PowerShell tools, expands Copilot+ and Windows features, and includes quality improvements plus the servicing stack update KB5078262.

Security update Microsoft Windows 11 26H1

Feb 24, 2026

OS Build 28000.1643

Security update Microsoft Windows 11 26H1

Feb 24, 2026

OS Build 28000.1643

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.

Security update Microsoft Windows 11 26H1

Feb 10, 2026

OS Build 28000.1575

Security update Microsoft Windows 11 26H1

Feb 10, 2026

OS Build 28000.1575

Microsoft Windows 11 26H1 Updates

Updates for Microsoft Windows 11 26H1

KB5127653 updates Windows 11 version 26H1 to OS Build 28000.3365 with new File Explorer, accessibility, recovery, personalization, and administration features. It also delivers quality fixes for Remote Desktop, BitLocker, Always On VPN, WSL, audio, certificates, and application control.

KB5134134 is a non-security out-of-band cumulative update for Windows 11 version 26H1. It adds updated trusted root certificate data for devices that cannot receive automatic certificate trust list updates.

KB5127646 updates Windows 11 version 26H1 to OS Build 28000.3231 with security improvements, Secure Boot certificate deployment enhancements, ReFS auditing controls, and fixes for Explorer, VPN, Storage Spaces Direct, and gaming issues.

KB5129194 for Windows 11, version 26H1 (OS Build 28000.2956) is an out-of-band update. It adds protections for CVE-2026-62721 and CVE-2026-85921 and fixes RDS, Hyper-V Plan9 sharing, and USB audio multichannel issues. Reference IDs: KB5124012, KB5125104.

Windows 11, version 26H1 is for new devices with select silicon starting early 2026. Microsoft says devices on earlier Windows 11 versions will not be offered 26H1 through Windows Update or as an in-place upgrade.

KB5121000 for Windows 11, version 26H1 updates OS Build 28000.2704 with the latest security fixes and non-security improvements from prior releases. It also references the August 2026 Security Updates guide and includes servicing stack update KB5121292.

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.

KB5101649 for Windows 11 version 26H1 (OS Build 28000.2525) includes July 2026 security updates, non-security improvements from KB5095051 and KB5095091, and servicing stack update KB5121292. It also adds RDP SHA-2 thumbprint support and security hardening for TDI transport registration.

KB5095091 updates Windows 11 version 26H1 to OS Build 28000.2340 with quality improvements, new AI-related UI features, and fixes for File Explorer, Windows Hello, USB, and more. It also includes a known issue affecting Microsoft Office launches from some third-party apps. Reference IDs: KB5101277.

KB5095051 (OS Build 28000.2269) is a cumulative update for Windows 11 version 26H1 that includes the latest security fixes, non-security improvements from prior preview releases, and servicing stack update KB5101277. Reference IDs: KB5089548, KB5089570.

KB5089570 updates Windows 11 version 26H1 to OS Build 28000.2179 with new features, reliability improvements, and security-related driver policy changes. It also adds Secure Boot targeting and policy controls, plus AI component updates. Reference IDs: KB5083806.

KB5089548 updates Windows 11, version 26H1 to OS Build 28000.2113 with the latest security fixes, non-security improvements from prior preview releases, and servicing stack updates. It also improves SSDP reliability and game compatibility. Reference IDs: KB5083768, KB5083806, KB5092761.

KB5083768 updates Windows 11, version 26H1 with the latest security improvements and non-security fixes from KB5079466. It adds Secure Boot status visibility, improves SMB compression over QUIC, and strengthens phishing protection for Remote Desktop (.rdp) files. Reference IDs: KB5088834, KB5083806.

KB5079489 (OS Build 28000.1764) is a non-security Windows 11 version 26H1 preview update with quality improvements, new features, and servicing stack update KB5085536. Microsoft reports no known issues.

KB5077239 (OS Build 28000.1643) is a non-security preview update for Windows 11 version 26H1. It adds Secure Boot PowerShell tools, expands Copilot+ and Windows features, and includes quality improvements plus the servicing stack update KB5078262.

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.