The Last Windows Secure Boot Certificate From 2011 Expired on October 19: Check Whether Your Windows Server Has the 2023 Certificates, and Why the Registry and the Firmware Can Disagree Windows Production PCA 2011 expired on October 19, 2026. See how to read the firmware DB and KEK on a Windows Server and why my lab server shows NotStarted while the firmware already has the 2023 certificates. Nov 1, 2026 8 min read Windows Server
