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KB5089573 updates Windows 11 version 25H2 and 24H2 with production-quality improvements, new features, and reliability fixes. It also addresses the May 2026 installation failure error 0x800f0922 and includes Secure Boot certificate rollout updates. Reference IDs: KB5092734.
LimitSecureBootRequiredServiceData Group Policy/MDM setting to reduce Secure Boot service data sent to Microsoft.0x800f0922 on devices with limited EFI System Partition free space.LimitSecureBootRequiredServiceData policy.Vendor: Microsoft
Product: Windows 11
Product type: Other
Application category: Utilities
Platform: Windows
Variant: 24H2
Version: OS Builds 26200.8524 and 26100.8524
Vendor release date: May 26, 2026
Published on updatealert.io: Jun 3, 2026
Description: Client operating system for modern desktop and enterprise environments.