Teams Phone falls back to the org's own Entra app

FeatureVOIPService
Shipped
September 4, 2026 at 2:48 AM UTC
Author
Kamo
Commit
ae4a41b

The per-phone-server credentials still win — that is the most specific source. What changes is the fallback underneath them: the org's own MICROSOFT_TEAMS registration if it has one, and only then Kamo's multi-tenant app. The redirect URI is org-scoped for the same reason it is registration data at all: an org on its own Entra app registered its own, and Microsoft requires the value replayed on the token exchange to match the authorization byte-for-byte. So the callback resolves it under the same org it authorized under.

All changes

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