Your Windows PC has a security deadline in June 2026

Microsoft is rolling new Secure Boot trust certificates (2023-dated) to replace expiring 2011 certificates; most updated systems will transition automatically via Windows Update, but older or misconfigured devices may fail to receive future boot-level protections—raising long-term risk from UEFI bootkits such as BlackLotus that exploit boot-manager vulnerabilities. Administrators should inventory devices, monitor event IDs and Secure Boot status, test firmware/BIOS updates, and avoid disabling Secure Boot.