Windows 11 26H1: Security Update im Detail

What changed

Das Juli LCU enthält die aktuellen Security Fixes und die von Microsoft dokumentierten Quality Fixes für Windows 11 26H1.

Technical details

• Security: August security fixes
• Device: accurate TPM EK certificate maintenance reporting
• Secure Boot: expanded high-confidence device targeting
• AI components: updated to version 1.2605.856.0
• Servicing stack: KB5121292 to build 28000.2602

Why it matters

Der Zielbuild ist die operative Grundlage für Patch Compliance, Pilot Rings, Wartungsfenster und Referenzimages.

Known limitations

• Microsoft currently reports no known issue
• 26H1 is intended for selected new-device hardware
• Dynamic Update media requires the matching boot.stl file

Now check

• Deploy KB5121000 only to supported 26H1 hardware
• Validate TPM reporting and Secure Boot certificate readiness
• Report build 28000.2704