Microsoft Defender for O365 now allows triggering new remediation actions—Submit to Microsoft, add to allow/block list, and initiate automated investigation—directly from the Advanced Hunting interface. This feature, rolled out since November 10, 2025, is enabled by default and supports improved threat response without policy changes.
The legacy SharePoint Online CDN domain publiccdn.sharepointonline.com will be retired by late April 2026. Update all hardcoded references to the new domain public-cdn.sharepointonline.com to avoid 404 errors. Validate changes before March 31, 2026, to ensure uninterrupted access to SharePoint resources.
Microsoft is introducing a dynamic onboarding wizard for frontline workers using personal Android or iOS devices to set up Microsoft Teams securely with MFA and mobile app management. Public preview starts late November, general availability by January 2026. The tool is optional and adapts to organizational policies.
Microsoft has paused new customer onboarding for calendar sync between Google Workspace and Microsoft Teams effective immediately. Existing setups continue to work, but new sync configurations cannot be initiated by organizations inactive in setup for 30 days. No action is currently required.
Microsoft Teams is enhancing the “Activity in other accounts and orgs” panel to centralize cross-tenant notifications, reduce context switching, and allow pinning up to three tenants. The panel moves to the bottom-left sidebar, activates by default, requires no admin setup, and rolls out from November 2025 to March 2026.
Agent Mode lets you build and edit workbooks side by side with Copilot. When you’re updating budgets, creating financial models, or analyzing data, Agent Mode uses Excel’s most powerful tools like tables, charts, PivotTables, and formulas to help you get the job done.
Administrator can monitor which locations and users across their organization are facing meeting quality issues due to unoptimized VDI.
With this feature when multiple files are involved in a DLP enforcement action, the policy tip will now show multiple files and their respective status.
First, spoken language is now automatically detected and updated across Interpreter, live captions, and live transcription when Interpreter is enabled, keeping all speech features consistent with the language being spoken – no manual setup required. When Interpreter is disabled, live captions and transcription will still work, but auto-update spoken language will not be available, which may result in gibberish or inaccurate content if participants switch languages during the meeting. Next, a new “preparing” status provides clear visual feedback while Interpreter initializes, helping users know when the system is ready -especially important for multilingual meetings. Lastly, Interpreter settings have also been improved with concise explanations for each configuration and field, making setup easier and minimizing confusion.
We are updating the UI for Copilot Chat so that the button is separate from the mail and event compose buttons. This feature will be available for users with a Copilot license.
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