Microsoft's March 2026 Entra update promotes passkey authentication to general availability, introduces a built-in tenant backup feature in public preview, and announces a breaking security change for hybrid environments, taking effect June 1, 2026. Additional changes enforce TLS 1.2 for Entra Connect Health agents and bring several multi-tenant governance capabilities into preview. This article covers changes relevant to administrators managing Microsoft 365 tenants and hybrid Active Directory environments.

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Starting April 2026, Microsoft Registration Campaigns in Entra ID will support Passkeys (FIDO2) as an authentication method, enabling organizations to deploy phishing-resistant credentials. The update introduces significant configuration changes, particularly for tenants using the Microsoft-managed state, where several campaign settings become non-configurable. This rollout is part of Microsoft's broader strategy to eliminate passwords and aligns with the introduction of Windows Hello passkey support for Entra accounts.

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