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MC1193408 — (Update)Action Required: Trust DigiCert Global Root G2 Certificate Authority for using Entra services by January 7, 2026

MC1193408Microsoft EntraplanForChangeUpdated: 12 December 2025

By January 7, 2026, Microsoft Entra will switch from DigiCert Global Root G1 to G2 certificates. Organizations must trust the DigiCert G2 root CA to avoid authentication failures with Entra services. Remove any pinning to G1 and update trust settings to prevent service disruption.

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