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Message Center

Notices Microsoft posts in the Microsoft 365 admin center, with the changes this installation saw between versions. Collected today from Observed in a reference Microsoft 365 tenant (Reference tenant (MVP)). Verify applicability in your own tenant's Message Center..

Graph API changesM365 roadmap

Versions captured by this deployment. Earlier versions and notices may be missing; first observed is not first published.

7Action dates in the next 30 days 9Prevent or fix issues 404Rolling out or changing 46Updated after first seen

Showing Microsoft Defender XDR only · all services

Notices and roadmap items

IDTitleServiceLast updated
MC1479503 (Updated) Microsoft Defender for Cloud Apps: Permission changes for select App Governance Entra roles Microsoft Defender XDR 20 Oct 2026
MC1478465 (Updated) Security Copilot is now included as part of your Microsoft 365 E5/E7 plan Microsoft Entra, Microsoft Intune, Microsoft Defender XDR 19 Oct 2026
MC1387578 (Updated) Microsoft Defender for Office 365: Localized default mark and notify email templateRoadmap: RM557558 Microsoft Defender XDR 15 Oct 2026
MC1484009 (Updated) Microsoft Defender for Office 365: New email submissions data in Advanced Hunting Microsoft Defender XDR 9 Oct 2026
MC1490909 Microsoft Defender Vulnerability Management: Private preview for selected developer package vulnerability coverage Microsoft Defender XDR 7 Oct 2026
MC1490905 Microsoft Defender for Office 365: Post-delivery protection for malicious QR codes in Microsoft Teams Microsoft Defender XDR 7 Oct 2026
MC1279093 (Updated) Microsoft Defender for Office 365: Enhancing how we handle promotional mail Microsoft Defender XDR 2 Oct 2026
MC1481318 Microsoft Defender XDR: Detection source support in alert tuning rules Microsoft Defender XDR 28 Sep 2026
MC1478463 Microsoft Defender for Office 365: Teams user reporting enabled by default Microsoft Defender XDR 25 Sep 2026
MC1392568 Microsoft Defender for Endpoint: Support for Amazon Linux 2 (ARM64) retiring October 31, 2026 Microsoft Defender XDR 23 Sep 2026
MC1388718 Microsoft Defender for Endpoint: Update to Linux connectivity requirements with new service URLs to allowlist Microsoft Defender XDR 23 Sep 2026
MC1478005 Microsoft Defender for Office 365: View approver details for remediation actions in Advanced Hunting Microsoft Defender XDR 23 Sep 2026
MC1477993 Case Management in Microsoft Defender Microsoft Defender XDR 23 Sep 2026
MC1476237 Microsoft Defender for Office 365: Remediation actions from the Teams message entity flyout Microsoft Defender XDR 21 Sep 2026
MC1474106 Microsoft Defender for Office 365: New MessageContents table in Advanced Hunting for Microsoft Teams messages Microsoft Defender XDR 18 Sep 2026
MC1466750 Microsoft Secure Score: New AI-readiness recommendations for device security Microsoft Defender XDR 3 Sep 2026
MC1422060 (Updated) Microsoft Defender for Office 365: Prompt injection protection for email Microsoft Defender XDR 2 Sep 2026
RM568784 Microsoft Defender for Identity: Unified identity timeline on the Identity page Microsoft 365 Defender, Microsoft Defender 1 Sep 2026
MC1465771 Microsoft Defender XDR: DLP alerts will be set as behaviors by default Microsoft Defender XDR, Microsoft Purview 1 Sep 2026
RM488097 Microsoft Defender for Office 365: Full Submissions experience in GCC Microsoft Defender for Office 365 26 Aug 2026
MC1462464 Microsoft Defender for Cloud Apps: App Governance support for the Cloud Application Administrator role is being retired Microsoft Defender XDR 26 Aug 2026
MC1461705 Microsoft Defender XDR: Unified identity timeline on the Identity page Microsoft Defender XDR 25 Aug 2026
MC1461704 Microsoft Defender XDR: Unified response actions across identity accounts Microsoft Defender XDR 25 Aug 2026
MC1255406 (Updated) Microsoft Purview | Data Security Triage Agent Summaries for DLP Alerts in Microsoft Defender XDRRoadmap: RM558860 Microsoft Defender XDR, Microsoft Purview 17 Aug 2026
MC1454382 Action required: Update Microsoft Defender for Endpoint Android App Microsoft Defender XDR 13 Aug 2026
MC1446794 Microsoft Teams: Report security concerns in Teams meetings Microsoft Teams, Microsoft Defender XDR 5 Aug 2026
MC1447673 Microsoft Teams: Users can report security concerns in group calls Microsoft Teams, Microsoft Defender XDR 5 Aug 2026
RM557558 Microsoft Defender for Office 365: Localized Default Mark and Notify Email TemplateNotices: MC1387578 Microsoft Defender for Office 365 4 Aug 2026
MC1440701 MDO Encrypted email attachment protection Microsoft Defender XDR 27 Jul 2026
RM557549 Microsoft Defender for Office 365: Introducing a new URL click alert in Teams via Microsoft Defender for Office 365 Microsoft Defender for Office 365 12 Jun 2026
RM536573 Microsoft Teams: Report a Suspicious Call in Microsoft Teams Microsoft Teams, Microsoft Defender for Office 365 5 May 2026
RM531760 Microsoft Defender for Office 365: User Report capabilities to Defender for Office Plan 1 Microsoft Defender for Office 365, Microsoft Teams 6 Mar 2026
RM529816 Microsoft Defender for Office 365: Zero-hour auto-purge (ZAP) Teams protection capabilities to Defender for Office Plan 1 Microsoft Defender for Office 365, Microsoft Teams 5 Mar 2026
RM531761 Microsoft Defender for Office 365: Admins can hunt on calls in Microsoft Teams Microsoft Defender for Office 365 27 Feb 2026
RM502528 Microsoft Defender for Office 365: Auto-Remediation of Malicious Similarity Clusters in AIR Microsoft Defender for Office 365 24 Feb 2026
RM503108 Microsoft Defender for Office 365: Automated Investigation & Response (AIR) Platform Modernization – User Submission Playbook Microsoft Defender for Office 365 24 Feb 2026
RM503112 Microsoft Defender for Office 365: Agentic AI Phish Submission Analysis & Response Microsoft Defender for Office 365 24 Feb 2026
RM542189 Microsoft Defender for Office 365: Admins can block external users in Microsoft Teams from Defender Portal Microsoft Defender for Office 365, Microsoft Teams 24 Feb 2026
MC1220762 (Updated) Retirement notice: MDE and XDR Advanced Hunting APIs retiring; migrate to Microsoft Graph Security API Microsoft Defender XDR 28 Jan 2026
RM497548 Microsoft Defender for Office 365: Overview dashboard Microsoft Defender for Office 365 26 Jun 2025
MC992217 (Updated) Microsoft Defender: Changes to Defender for Cloud Apps alerts Microsoft Defender XDR 5 Jun 2025
RM488095 Microsoft Defender for Office 365: Additional actions include submit, allow/block, and trigger AIR from Advanced Hunting. Microsoft Defender for Office 365 10 Apr 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 Microsoft Defender for Office 365 30 Jul 2024

Roadmap items are public; Message Center notices are what this installation's reference tenants received. Each notice links the roadmap items it names, and each roadmap item the notices that name it.

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 20 Oct 20:53 UTC · 258 of 260 readable · 256 fully read · documentation 416/439 current

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