Microsoft 365 Copilot, including Copilot Chat, will be available in Outlook shared and delegate mailboxes starting April 2026. Users with access and licenses can use Copilot features directly in these mailboxes without special prompts. Conversation history stays with the user’s primary account. No action required.
This notice is to inform you of an update regarding the Microsoft Online Services Subprocessors List.
Microsoft may use non-Microsoft organizations to help provide Online Services. As a function of their role for Microsoft, a small set of these organizations may process your customer data or personal data, only to deliver the services Microsoft has retained them to provide; they are prohibited from using your data for any other purpose. In accordance with GDPR, we disclose these subprocessors to you in advance of their first engagement and provide notification of any changes over time.
Starting June 1, 2026, Microsoft will disable Teams meeting recording expiration notification emails for all Microsoft 365 tenants to reduce notification noise. Recording expiration and deletion remain unchanged. No admin action is needed, but organizations can notify users or update documentation if desired.
Microsoft Defender for Office 365 introduces a new URBAC permission allowing admins to preview and download email content linked to “Email reported by user as malware or phish” alerts, enabling granular access without broad email permissions. Rollout begins April 2026, with no impact on existing roles.
Starting May 30, 2026, new Microsoft Defender for Office 365 Plan 2 tenants will have Unified RBAC enabled by default, offering centralized, granular access control. Existing tenants remain unchanged but can opt in anytime. Administrators should review roles and update documentation for new tenants accordingly.
Microsoft Purview Insider Risk Management is enhancing the Data Security Triage Agent to prioritize alerts, summarize behavioral risks, and expand user context for more efficient investigations. The update rolls out from March to July 2026, requires admin activation, and includes Security Copilot for Microsoft 365 E5 users.
Phase 2 of always-on diagnostics for Endpoint Data Loss Prevention enables admins to collect diagnostic traces from Windows endpoints via the Purview portal without user involvement, improving troubleshooting. Rolling out worldwide from March 2026, it requires admin enablement and does not affect existing DLP policies.
Starting mid-April 2026, Always-on diagnostics for Endpoint DLP will be enabled by default on Windows devices, storing diagnostic logs locally for 90 days to aid troubleshooting. Admins can opt out anytime via Microsoft Purview. This improves issue resolution but may affect investigation efficiency if disabled.
The AI Administrator role is updated to support Agent 365, enabling delegated agent management without Global Admin involvement for routine tasks. Rollout starts March 2026. AI Admins gain expanded permissions for agent lifecycle management, tenant-wide consent (excluding Microsoft Graph app permissions), and risk monitoring via Identity Protection, enhancing security and compliance.
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