W11
Windows 11 26H1 KB5101649
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KB5101649SecurityBug fixPerformance
โฆ Editor's summary
Windows 11 KB5101649 is the July 2026 cumulative security update for version 26H1. It includes all improvements from the previous preview release, addresses the latest Microsoft security vulnerabilities, expands Secure Boot certificate deployment, strengthens Remote Desktop security, and improves Windows Update reliability.
โ Security impact
- Includes Microsoft's July 2026 cumulative security fixes.
- Expands automatic deployment of Microsoft Secure Boot certificates to additional eligible devices.
- Adds support for SHA-2 certificate thumbprints for trusted Remote Desktop publishers while preparing for the future removal of SHA-1.
- Introduces security hardening for third-party TDI transport registration used by networking applications.
What's new
- Updated Windows 11 Version 26H1 to OS Build 28000.2525.
- Installed the July 2026 cumulative update (KB5101649).
- Included all improvements previously released in KB5095091 (OS Build 28000.2340 Preview).
- Expanded Secure Boot certificate deployment for additional eligible devices.
- Added SHA-2 certificate thumbprint support for trusted Remote Desktop publishers.
- Improved Windows Update reliability with Servicing Stack Update KB5121292.
- Updated AI components including Image Search, Content Extraction, Semantic Analysis, and Settings Model.
- Included cumulative security, quality, reliability, and performance improvements.
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