Postman : OpenID Connect / OAuth errors

This is on ADFS 4.0 on Server 2016 TP5.

Yes, I know the official release is out but I've had other priorities :-)

So some of this may not apply to the official release.

This is based on the Postman collection described here.

While I was trying to get this to work, I encountered a number of errors and quickly established that there is basically zero documentation on any of them.

So I documented as I went along.

There is a authorisation request. This is an https request with a number of parameters and I removed them manually one by one.

Remove client id

MSIS9220: Received invalid OAuth authorization request. The 'client_id' parameter is missing or found empty. The client could not be validated.

Remove "response_type=code"

MSIS7065: There are no registered protocol handlers on path /adfs/oauth2/authorize to process the incoming request.

Remove "redirect_uri=https%3A%2F%2Fmy-pc%2FTodoListWebApp%2F"

MSIS9221: Received invalid OAuth authorization request. The 'redirect_uri' parameter is missing or found empty. Public clients must send the redirect_uri parameter with valid redirect URI in the OAuth authorization request.

This is followed by a REST token request.

This is driven by Postman and one of the nice features of Postman is there is a tick box next to each parameter and if you untick the box, that parameter is not sent.

Remove client_id

MSIS9629: Received invalid Client credentials.'client_secret' was present but 'client_id' parameter is missing or found empty.

Remove code

MSIS9610: The 'code' parameter is not specified. The access token request must contain the 'code' parameter which specifies the previously issued authorization code."

Remove "grant type"

MSIS7065: There are no registered protocol handlers on path /adfs/oauth2/token to process the incoming request.

Remove "client_secret"

MSIS9267: No Client credentials found in the request. Client 'a07...e75' is configured as a confidential client.

Remove "redirect_uri"

MSIS9221: Received invalid OAuth authorization request. The 'redirect_uri' parameter is missing or found empty. Public clients must send the redirect_uri parameter with valid redirect URI in the OAuth authorization request.

MSIS9608: The 'redirect_uri' parameter is not specified. The access token request must contain 'redirect_uri' parameter for public clients

Note there are two slightly different errors here. I noticed this in some other scenarios as well.

The first error is from the ADFS event log i.e. the server side (which is where most of the errors were copied from).

The second is what Postman actually reports i.e. the client side.

I have no idea why they are different?

Enjoy!