Can an MS Graph Bearer Token be used to access the Office REST API?

Question

We\'ve implemented Authentication in a .Net Core 2.0 app using Microsoft Graph to authenticate against Azure AD.

That works fine and we were aiming to use Microsoft

Answer 1

Just want to share how you can exchange Graph RefreshToken to a Outlook AccessToken using postman. (You can do this in whatever code language you wish)

First lets show how you use a RefreshToken to get a new Graph AccessToken:

Then use the Graph RefreshToken to get the new Outlook AccessToken:

Hope this might help some other people :)