Hi Courtney, Thank you for the reply. I did happen to come across that Microsoft post a few weeks ago. Unfortunately, it looks like that user has direct access to the underlying API itself, so he/she was able to modify the API authentication method to work with Microsoft Flow. From what I'm seeing in the OAuth docs, it looks like the Client Credentials Flow needs to be specifically supported by the API in order for this type of unattended API call to work. https://auth0.com/docs/get-started/authentication-and-authorization-flow/which-oauth-2-0-flow-should-i-use
... View more