User-reported security signals in Teams admin center*

Release notes for Microsoft Teams admin features

May 06, 2026

• User-reported security signals in Teams admin center: This update brings end‑user security reporting insights into Teams admin center. Admins can now view and download signals from messages the users report as a security concern (or not as a security concern) within TAC Protection reports, helping them identify trends and fine‑tune policies and responses.
• Teams Phone user multi-line: This feature gives callers more flexibility and control by allowing administrators to assign up to 10 phone numbers to a single user. With full support across Teams desktop, Teams mobile, and Teams devices, users can seamlessly make and receive calls from multiple numbers without switching accounts or hardware. This makes it easy to manage different roles, departments, or regional identities — all from one unified Teams experience. The result is a familiar, localized calling experience for users who work across diverse markets or with global customers.
• Admin setting for numeric‑only meeting passcodes: This feature supports scenarios where typing alphanumeric passcodes is difficult. This feature helps tenant admins to enable a meeting policy setting that generates 8‑digit numeric-only passcodes for meetings organized by selected users/groups. Because numeric-only passcodes increase the risk of unauthorized access and don't align with Microsoft’s recommended security practices, enabling the setting displays a warning and requires explicit confirmation.