Microsoft identity platform and OAuth 2.0 authorization code flow error 400 Bad Request
问题 I need a bit of help understanding which is the problem with Microsoft Identity Platform login on my cms (ASP.NET Webforms). It used to work without problems, last time I tried was maybe a month ago. Now I'm receiving a "400 bad request" response on the second step of the code flow authentication, when I send back the authorization_code that I received after the user login to the token endpoint, to request the access_token. The original GET request to send the user to the Microsoft login