Microsoft Edge for Business will support Microsoft 365 Copilot Chat to summarize and provide context from browser tabs, Microsoft 365 documents, and YouTube videos starting mid-November 2025. The feature is off by default, respects DLP and policy settings, and requires Entra ID sign-in and approp...

Microsoft Teams will soon detect and warn users of tenant-owned domain impersonation in external chats, displaying high-risk alerts when suspicious. This feature, enabled by default for organizations allowing external access, launches December 2025 across all platforms with no admin controls or r...

The Microsoft 365 Copilot app will have a simplified, flattened navigation menu with logically grouped features. The rollout starts mid-November 2025 for targeted release and December 2025 for general availability, completing by January 2026. No admin action is required.

The Learning agent is now available in Frontier, offering personalized microlearning and Copilot tips within Microsoft 365 tools. It’s deployable via the Copilot Control Center, requires Microsoft 365 Copilot licensing, and is opt-in for admins. Frontier features are experimental and subject to c...

The Workforce Insights agent, launching November 24, 2025, in Frontier for Microsoft 365 Copilot, helps leaders analyze staffing, skills, and organizational structure using organizational and people skills data. Available to organizations with 50+ Copilot licenses, it supports deployment control ...

Microsoft 365 Copilot Chat will expand Outlook support to entire inbox and calendar, add Agent Mode in Word, Excel, and PowerPoint using web data and referenced files, and introduce specialized agents powered by Anthropic’s Claude model. Rollout starts January 2026; no admin action required excep...

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 specif...

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 neede...

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 workflow...

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.

Microsoft 365 Copilot users will see a new "Prepare" button on the Up Next card up to 5 minutes before meetings, replacing the "Join" button. This enables quick access to Copilot’s meeting prep tools. Rollout starts December 2025, requires no admin action, and is enabled by default for eligible u...