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MC1163922 — Upcoming Secure by Default Settings Changes for Exchange and Teams APIs

MC1163922Exchange Online · Microsoft TeamsplanForChangeUpdated: 2 October 2025

Starting late October to November 2025, Microsoft will require admin consent for third-party apps accessing Exchange and Teams content via Microsoft-managed default consent policy. This enhances security by restricting user consent, affecting new app permissions but not existing approved apps. Admins should review app access and configure consent workflows accordingly.

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