Microsoft Defender for Office 365

Message Center and Roadmap announcements for this Microsoft 365 service.

Message	Services	Published	Updated
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	Microsoft Defender for Office 365 Roadmap	Feb 25, 2026	Jun 12, 2026
RM557558 Microsoft Defender for Office 365: Localized Default Mark and Notify Email Template Feb 25, 2026\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Feb 25, 2026	May 19, 2026
RM536573 Microsoft Teams: Report a Suspicious Call in Microsoft Teams Dec 4, 2025\|Microsoft Teams	Microsoft Teams Microsoft Defender for Office 365 Roadmap	Dec 4, 2025	May 5, 2026
RM531760 Microsoft Defender for Office 365: User Report capabilities to Defender for Office Plan 1 Dec 4, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Microsoft Teams Roadmap	Dec 4, 2025	Mar 6, 2026
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	Microsoft Defender for Office 365 Microsoft Teams Roadmap	Nov 14, 2025	Mar 5, 2026
RM531761 Microsoft Defender for Office 365: Admins can hunt on calls in Microsoft Teams Dec 9, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Dec 9, 2025	Feb 27, 2026
RM503108 Microsoft Defender for Office 365: Automated Investigation & Response (AIR) Platform Modernization – User Submission Playbook Sep 11, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Sep 11, 2025	Feb 24, 2026
RM503112 Microsoft Defender for Office 365: Agentic AI Phish Submission Analysis & Response Sep 9, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Sep 9, 2025	Feb 24, 2026
RM502528 Microsoft Defender for Office 365: Auto-Remediation of Malicious Similarity Clusters in AIR Sep 3, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Sep 3, 2025	Feb 24, 2026
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	Microsoft Defender for Office 365 Microsoft Teams Roadmap	Dec 12, 2025	Feb 24, 2026
RM492985 Microsoft Teams integration with Microsoft Defender for Office Tenant/Allow Block List for domains May 14, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Microsoft Teams Roadmap	May 14, 2025	Dec 17, 2025
RM502879 Microsoft Defender for Office 365: Message Warnings for Messages with Malicious URL in Teams Sep 9, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Sep 9, 2025	Dec 12, 2025
RM488097 Microsoft Defender for Office 365: Full Submissions experience in GCC Apr 14, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Apr 14, 2025	Dec 9, 2025
RM501202 Microsoft Teams: User reporting for incorrectly identified security concerns Aug 26, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Microsoft Teams Roadmap	Aug 26, 2025	Dec 3, 2025
RM488096 Microsoft Defender for Office 365: Ability to Disagree with Microsoft submissions analysis Apr 10, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Apr 10, 2025	Oct 30, 2025
RM497548 Microsoft Defender for Office 365: Overview dashboard Jun 26, 2025\|Microsoft Defender for Office 365	Microsoft Defender for Office 365 Roadmap	Jun 26, 2025	Jun 26, 2025
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	Microsoft Defender for Office 365 Roadmap	Apr 10, 2025	Apr 10, 2025
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	Microsoft Defender for Office 365 Roadmap	Nov 10, 2023	Jul 30, 2024

1-18 of 18

Per page: