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MC1183006 — Introducing simplified admin controls to manage external collaboration in Teams admin center

MC1183006Microsoft TeamsstayInformedUpdated: 18 February 2026

Microsoft Teams is introducing a simplified external collaboration admin experience with three modes—Open, Controlled, and Custom—available in the Teams admin center. Public preview starts mid-November 2025, with general availability by late February 2026. Existing settings remain unless changed by admins.

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Applies to: Microsoft Teams
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).