Here is the screenshot before running the flow showing the full config of the built-in HTTP connector (no swagger):
and here is the screenshot of the result of the flow run:
As you can see: the HTTP connector is set up to send a POST to an API using Basic authentication. However, it fails in Power Automate but not in Postman, and the error message explicitly refers to oauth.v2 EVEN THOUGH I specified Basic auth!
Of course it is going to fail if it tries to authenticate against oauth.v2 when the server does not speak oauth.v2!
Q1: Why does this happen? Is it a connector bug when using Basic auth, ie it always defaults to oauth.v2 no matter what?
Q2: Or am I missing something? I did test the same connector but with a GET request against the data endpoint, plugging in the token and auth cookie from Postman, and that worked, returning exactly the same result I got in Postman. So why am I unable to get an access-token with Basic auth??? 😠😠😠 getting seriously aggravated on this