Microsoft Teams: Report external users for security concerns

Microsoft Teams will enable users to report suspicious external users directly, with reports visible to admins in the Teams admin center for faster security response. This feature, rolling out June 2026, supports chats, meetings, and channels, is enabled by default, and integrates with existing messaging policies. To help organizations respond more quickly to external security threats, Microsoft Teams will allow users to report suspicious external users directly from Teams. These reports will surface in the Teams admin center, giving admins greater visibility into potentially risky interactions and enabling faster investigation and response. This enhancement will build on existing reporting capabilities and will use user signals as an additional layer of protection against phishing, impersonation, and social engineering attacks. This message is associated with Microsoft 365 Roadmap ID 560547. When this will happen Targeted Release: We will begin rolling out in early June 2026 and expect to complete by early June 2026. General Availability (Worldwide): We will begin rolling out in mid-June 2026 and expect to complete by late June 2026. How this affects your organization Who is affected All Microsoft 365 tenants using Microsoft Teams Users who interact with external users in Teams Admins managing Teams security and reporting in the Teams admin center What will happen Users will be able to report suspicious external users directly in Teams, in addition to blocking them:  View image in new tab Reporting will be available during first time external chat requests and from an external user profile card. Reporting will be supported across Teams experiences including chats, meetings, channels, and search results. When a user is reported, the submission will appear in the Teams admin center under Protection reports > User reported security submission report View image in new tab Admins will be able to review reported users and investigate potential phishing, impersonation, or other suspicious activity. Additional metadata will be available through report export to support investigation and response workflows. This feature will be enabled by default and will respect existing Teams messaging policies. What you can do to prepare No action will be required if you want to keep user […]

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