Microsoft 365 Message Center ArchiveM365 Archive

Microsoft Defender for Office 365

Message Center and Roadmap announcements for this Microsoft 365 service.

MessageActions
RM557558
Microsoft Defender for Office 365: Localized Default Mark and Notify Email Template
Feb 25, 2026|Microsoft Defender for Office 365
RM536573
Microsoft Teams: Report a Suspicious Call in Microsoft Teams
Dec 4, 2025|Microsoft Teams
RM557549
Microsoft Defender for Office 365: Introducing a new URL click alert in Teams via Microsoft Defender for Office 365
Feb 25, 2026|Microsoft Defender for Office 365
RM531760
Microsoft Defender for Office 365: User Report capabilities to Defender for Office Plan 1
Dec 4, 2025|Microsoft Defender for Office 365
RM529816
Microsoft Defender for Office 365: Zero-hour auto-purge (ZAP) Teams protection capabilities to Defender for Office Plan 1
Nov 14, 2025|Microsoft Defender for Office 365
RM531761
Microsoft Defender for Office 365: Admins can hunt on calls in Microsoft Teams
Dec 9, 2025|Microsoft Defender for Office 365
RM503108
Microsoft Defender for Office 365: Automated Investigation & Response (AIR) Platform Modernization – User Submission Playbook
Sep 11, 2025|Microsoft Defender for Office 365
RM503112
Microsoft Defender for Office 365: Agentic AI Phish Submission Analysis & Response
Sep 9, 2025|Microsoft Defender for Office 365
RM502528
Microsoft Defender for Office 365: Auto-Remediation of Malicious Similarity Clusters in AIR
Sep 3, 2025|Microsoft Defender for Office 365
RM542189
Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal
Dec 12, 2025|Microsoft Defender for Office 365
RM492985
Microsoft Teams integration with Microsoft Defender for Office Tenant/Allow Block List for domains
May 14, 2025|Microsoft Defender for Office 365
RM502879
Microsoft Defender for Office 365: Message Warnings for Messages with Malicious URL in Teams
Sep 9, 2025|Microsoft Defender for Office 365
RM488097
Microsoft Defender for Office 365: Full Submissions experience in GCC
Apr 14, 2025|Microsoft Defender for Office 365
RM501202
Microsoft Teams: User reporting for incorrectly identified security concerns
Aug 26, 2025|Microsoft Defender for Office 365
RM488096
Microsoft Defender for Office 365: Ability to Disagree with Microsoft submissions analysis
Apr 10, 2025|Microsoft Defender for Office 365
RM487411
Microsoft Defender for Office 365: Hunting on Teams Messages
Apr 2, 2025|Microsoft Defender for Office 365
RM497548
Microsoft Defender for Office 365: Overview dashboard
Jun 26, 2025|Microsoft Defender for Office 365
RM488095
Microsoft Defender for Office 365: Additional actions include submit, allow/block, and trigger AIR from Advanced Hunting.
Apr 10, 2025|Microsoft Defender for Office 365
RM184915
Microsoft Defender for Office 365: False positive email release from Quarantine through threat explorer, email summary panel, advanced hunting, and custom detection email entity page take action
Nov 10, 2023|Microsoft Defender for Office 365
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