sdk - Why is my GraphServiceClient reauthenticating at every API call?

Question

I am using Microsoft Graph API to call some endpoints. I am using the SDK for C#. When opening a fiddler trace, I found out that my _graphClientService is issuing an authentication to get a new token at every call. Why would that happen and how to prevent it?

It is also causing this error in some calls.

AADSTS50196: The server terminated an operation because it encountered a client request loop

Answer 1

If you are using MSAL.NET you can cache a token. Public client applications (desktop/mobile apps) should try to get a token from the cache before acquiring a token by another method.

Acquisition methods on confidential client applications manage the cache themselves.

Resource:

Token cache serialization in MSAL.NET