Aug 03 2021 04:37 AM - edited Aug 03 2021 04:43 AM
@Dino_Vo Hello, no need to do that (can't assign app policies to guest users actually). You either use federation (external access) or guest access. That will decide what the external users can do and what they can access by default. You should read about the differences here.
- Manage external access (federation) - Microsoft Teams | Microsoft Docs
- Guest access in Microsoft Teams - Microsoft Teams | Microsoft Docs