No access token returned for AD B2C user when requesting Microsoft Graph delegated permissions
问题 User Story: Given an ADB2C User, with Global Administrator role and an oid of 01234567-901a-bcde-f012-3456789abcde (not a real oid), I want to be able to log in as that user and retrieve the user profile from "https://graph.microsoft.com/beta/me" or "https://graph.microsoft.com/beta/users/01234567-901a-bcde-f012-3456789abcde". Both are listed in the documentation as valid endpoints for B2C. It's not working: In an app registration with only Microsoft Graph permission scopes assigned, I used