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MC1173103 — Secure Boot certificate deployment guide and tools

MC1173103WindowspreventOrFixIssueUpdated: 15 October 2025

Use the newly published guide and tools to start updating your organization’s expiring Secure Boot certificates. As the 2011 certificate authorities (CAs) start expiring in June 2026, 2023 CAs are required. Updated CAs allow Secure Boot to continue preventing malware early in the startup sequence. New resources are available for you to start monitoring, deploying, and troubleshooting Secure Boot CAs. These include the deployment playbook, new registry keys, Windows Event Log, and Windows Configu...

Applies to: Windows
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).