Microsoft 365 Message Center ArchiveM365 Archive

Microsoft Defender XDR

Message Center and Roadmap announcements for this Microsoft 365 service.

MessageActions
MC1304290Major
2026 Microsoft 365 Packaging Update
May 8, 2026|Exchange Online
MC1279093Major
Microsoft Defender for Office 365: Enhancing how we handle promotional mail
Apr 13, 2026|Microsoft Defender XDR
MC1293483
Microsoft Secure Score: New recommendation for Secure Boot 2023 certificate readiness in Microsoft Defender for Endpoint
Apr 27, 2026|Microsoft Defender XDR
MC1276511MajorAction by May 9, 2026
Upcoming retirement of older Microsoft Defender for Endpoint mobile app versions (iOS and Android)
Apr 10, 2026|Microsoft Defender XDR
MC1268924
Microsoft Defender XDR: Email summary powered by Security Copilot on the email entity page
Apr 2, 2026|Microsoft Defender XDR
MC1261596
Notice: Security Copilot will be included as part of your Microsoft 365 E5 plan soon
Mar 25, 2026|Microsoft Entra
MC1255406Major
Microsoft Purview | Data Security Triage Agent Summaries for DLP Alerts in Microsoft Defender XDR
Mar 18, 2026|Microsoft Defender XDR
MC1254554Major
Upcoming retirement of select threat detections in Microsoft Defender for Cloud Apps
Mar 17, 2026|Microsoft Defender XDR
MC1245219Major
Microsoft Defender for iOS: End of support for iOS 16 devices
Mar 5, 2026|Microsoft Defender XDR
MC1239187Major
Defender for Office 365 URL click alerts now include Microsoft Teams
Feb 26, 2026|Microsoft Defender XDR
MC1223828
Microsoft Teams: Report a suspicious call
Jan 29, 2026|Microsoft Teams
MC1220762MajorAction by Jan 31, 2027
Retirement notice: MDE and XDR Advanced Hunting APIs retiring; migrate to Microsoft Graph Security API
Jan 22, 2026|Microsoft Defender XDR
MC1192257MajorAction by Aug 1, 2026
Microsoft Defender Threat Intelligence: Convergence with Microsoft Defender and Microsoft Sentinel
Dec 5, 2025|Microsoft Defender XDR
MC1183015Action by Jul 1, 2026
Fix/Update Microsoft Sentinel Account Entity Naming to avoid inconsistent account identification in incidents and alerts
Nov 5, 2025|Microsoft Defender XDR
MC992217
Microsoft Defender: Changes to Defender for Cloud Apps alerts
Jan 30, 2025|Microsoft Defender XDR
MC744113Archived
Microsoft Defender for Office 365: New Quarantine release details
Mar 18, 2024|Exchange Online
MC765804Archived
Microsoft Defender for Office 365: Adding last used dates to Tenant Allow/Block Lists
Apr 2, 2024|Exchange Online
MC765801Archived
Microsoft Defender for Microsoft Office 365: enhanced clarity in submission results
Apr 2, 2024|Exchange Online
MC764457Archived
Microsoft Defender for Endpoint: Support continues after Log Analytics Agent retires on August 31, 2024
Apr 1, 2024|Microsoft Defender XDR
MC719660Archived
Microsoft Defender for Office 365: Copy simulation action in Attack simulation training
Feb 27, 2024|Microsoft Defender XDR
MC719648Archived
Microsoft Defender for Endpoint: Major change to Endpoint Attack Notifications
Feb 27, 2024|Microsoft Defender XDR
MC718246Archived
Defender for Office 365: Block Sender in Quarantine notification will require signing in to security portal
Feb 21, 2024|Exchange Online
MC718264Archived
Updated Alerts and Incidents tab in the Microsoft Defender XDR services Identity page
Feb 22, 2024|Microsoft Defender XDR
MC732103Archived
Microsoft Defender Antivirus: Changes to "engine update" support plans
Mar 11, 2024|Microsoft Defender XDR
MC722587Archived
Microsoft Secure Score: Removing a recommendation from Microsoft Defender for Identity
Mar 2, 2024|Microsoft Defender XDR
MC724832Archived
Microsoft Defender for Office 365: User submission automatic feedback response
Mar 5, 2024|Microsoft Defender XDR
MC794542Archived
Microsoft Defender for Office 365: Tenant Allow/Block List will support blocking top-level domains and subdomains
May 20, 2024|Exchange Online
MC794813Archived
Microsoft Defender for Office 365: Tenant Allow/Block Lists will support entry removal 45 days after last used date
May 21, 2024|Exchange Online
MC794815Archived
Microsoft Defender XDR: Enhancing email remediation with Sender’s copy clean-up features
May 21, 2024|Microsoft Defender XDR
MC799276Archived
Microsoft Defender XDR: Simplified DomainKeys Identified Mail (DKIM) setup for enhanced domain protection
Jun 6, 2024|Exchange Online
MC797115ArchivedMajor
Microsoft Defender for Identity: "Honeytoken was queried via SAM-R alert" retires June 30, 2024
May 30, 2024|Microsoft Defender XDR
MC797122Archived
Microsoft Defender XDR: Please take action regarding your preview features status
May 30, 2024|Microsoft Defender XDR
MC787370Archived
Advanced Hunting Permissions update for some Microsoft Defender for Office 365 security admins
Apr 26, 2024|Microsoft Defender XDR
MC788953Archived
Microsoft Defender for Office 365: New added feature called the Take action wizard in Threat Explorer.
Apr 29, 2024|Microsoft Defender XDR
MC783218ArchivedMajor
Cloud Discovery anomaly detection policy to be retired
Apr 22, 2024|Microsoft Defender XDR
MC783216ArchivedMajor
"Investigation priority score increase" Policy to be retired
Apr 22, 2024|Microsoft Defender XDR
MC790242Archived
Microsoft Defender for Office 365: Reported mailbox notifications messages subject change
May 4, 2024|Exchange Online
MC800492Archived
Microsoft Defender XDR services: Consolidation of Approve release and Release action
Jun 10, 2024|Exchange Online
MC690603Archived
Microsoft Defender: User experience update to evidence
Nov 17, 2023|Microsoft Defender XDR
MC690173ArchivedMajor
Microsoft to stop honoring mail flow rules tracking user reporting
Nov 15, 2023|Exchange Online
MC687846Archived
New Microsoft Defender Antivirus services on Windows Devices
Nov 7, 2023|Microsoft Defender XDR
MC696850Archived
Microsoft Defender for Office 365 enable admins to provide intent while submitting
Dec 8, 2023|Exchange Online
MC681893Archived
Microsoft Secure Score - Changes in SSPM support
Oct 16, 2023|Microsoft Defender XDR
MC685930Archived
Microsoft Secure Score - New Microsoft Defender for Identity recommendations
Oct 30, 2023|Microsoft Defender XDR
MC697411Archived
Force redirection from Microsoft Defender for Cloud Apps to Microsoft Defender XDR public preview announcement
Dec 12, 2023|Microsoft Defender XDR
MC711666Archived
Public preview announcement – support all Microsoft Defender for Cloud Apps users by Microsoft Defender XDR portal
Feb 1, 2024|Microsoft Defender XDR
MC711337Archived
Microsoft Defender XDR for Office 365: Streamlined false positive submissions for quarantined files
Jan 30, 2024|Microsoft Defender XDR
MC711335Archived
Microsoft Defender for Office 365: Quarantine End User Allow and Block list management
Jan 30, 2024|Exchange Online
MC716388Archived
Microsoft Defender XDR: Offboarding scripts now expire in 3 days
Feb 16, 2024|Microsoft Defender XDR
MC697804Archived
Adding new consolidated infra IPs to the portal access and SIEM agent connection sections
Dec 13, 2023|Microsoft Defender XDR
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