You can now declutter your calendar by hiding declined meetings. If you’ve enabled “Show declined meetings” in New Outlook or Outlook for the Web, you’ll see a setting in Outlook Mobile to hide them for a simpler view.
Users can manually select text and ask Copilot to help provide relevant information.
The refreshed Copilot landing page in Microsoft 365 admin center gives an at-a-glance view of your Copilot journey across Chat, Agents, and M365 Copilot. It includes success metrics for each pillar, new metrics like active chat users, assisted hours, and satisfaction rate, plus multi-signal, personalized and actionable insights to drive adoption. We’ve added a security pivot for Purview actions and centralized Copilot usage reports under a new usage pivot.
Enable customers to edit the scheduled prompt schedule
Copilot Chat in Outlook expanding to support reasoning over a user’s entire inbox, calendar and other enterprise data for Microsoft 365 Copilot Chat users (without a Microsoft 365 Copilot license).
Defender for Identity unified sensors (V3.x) will offer an opt-in feature from mid-Nov 2025 to automatically configure Windows event-auditing settings, simplifying deployment and ensuring consistent policies. Admins must enable this feature manually; it applies to all sensors and addresses specific auditing health issues.
Two new Microsoft-designed dark themes (Dark Teal, Dark Blue) will be available for SharePoint sites starting mid-December 2025. They enhance visual experience, support accessibility, and can be applied via site settings without affecting existing themes or functionality. No admin action is needed before rollout.
The HideFromAddressListEnabled attribute will now sync across tenants via Entra Cross Tenant Sync, ensuring consistent Global Address List visibility. The update rolls out late November to mid-December 2025 automatically, requiring no admin action and not affecting mail flow or sign-in.
Threat actor attribution will be removed from Microsoft Defender for Endpoint alert pages on January 12, 2026, and moved to the Incident page and Threat Intelligence section. This change improves alert clarity without affecting detection or security. No admin action is needed, but update workflows accordingly.
Starting January 1, 2026, Microsoft Learning Zone will be enabled by default for all Education tenants, allowing educators with Copilot+ PC devices to create AI-powered interactive lessons. IT admins can opt out anytime. The app supports lesson creation, preview, assignment, and sharing.
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