Microsoft Defender for Office 365: Block Sender in Quarantine notification will require signing in to security portal
Following the feature update described in Message Center post MC711335 – Microsoft Defender for Office 365: Quarantine End User Allow and Block list management, published January 31st, 2024, sign in to the security portal will be required for the Block Sender action in Quarantine notifications.
This message is associated with Microsoft 365 Roadmap ID 380185


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