Microsoft Defender for Identity: Classic portal automatic redirection
Beginning on June 30, 2023, access to Microsoft Defender for Identity legacy portal at portal.atp.azure.com will be unavailable. Any request will be automatically redirected to Microsoft 365 Defender portal at security.microsoft.com. All new and existing tenants will be automatically redirected to the Microsoft 365 Defender portal, and the option to opt-out will no longer be available.
When this will happen:


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