Secure boot is on but your device is using an older boot trust configuration that should be updated

This guide shows essential steps to follow for the Secure boot is on, but your device is using an older boot trust configuration message.
Redmond Magazine

Microsoft Urges IT Teams to Prepare for Secure Boot Certificate Updates

Microsoft urges Windows Server admins to prepare for Secure Boot certificate updates. Expiring 2011 Secure Boot certificates in June 2026 require proactive remediation. Updated firmware trust chains ...