Update: The full timeline for retirement of Basic Authentication in Exchange Online is now published in Basic Authentication Deprecation in Exchange Online – September 2022 Update.
In about 150 day...
Updated Sep 01, 2022
Version 5.0
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I have followed all the steps mentioned in this https://docs.microsoft.com/en-us/previous-versions/office/developer/o365-enterprise-developers/jj984325(v=office.15), I was able to generate an access token successfully using client credentials.
The provided article doesn't mention the actual steps to invoke the MessageTrace API using the generated access token.
In the attached image, the 4th section Call the Reporting Web Service isn't redirecting me to any reference unlike the first three.
I tried calling the MessageTrace API by passing this token as a Bearer token instead of the current Basic Auth workflow in the Authorization header and it isn't working. It is throwing me a 401 Error.
Can you please help me here?