PowerBI Developer Example - Authentication Error

[jgoldsmith]

Hi, 

I am following the example at: https://github.com/Microsoft/PowerBI-Developer-Samples/tree/master/App%20Owns%20Data

Edit: specifically /App Owns Data/PowerBIEmbedded_AppOwnsData/Controllers/EmbedReport

var authenticationResult = await authenticationContext.AcquireTokenAsync(resourceUrl, clientId, credential);

After plugging in user credentials and ClientId I am getting the following error response to the access token request:

{"error":"invalid_client","error_description":"AADSTS70002: The request body must contain the following parameter: 'client_secret or client_assertion'..."}

I'm using the application id from Azure Portal -> App Registrations as the ClientId. I've set appropriate app permissions (https://powerbi.microsoft.com/en-us/documentation/powerbi-developer-embedding-content/#appreg) and the user credentials work fine and have permission. 

It seems all of this stuff is in heavy flux. Please help get these dev examples working.

[leewsimpson]

How did you get this solved?

Im running the example code locally - it starts as a web app.  I get the same error.

[Eric_Zhang · Accepted solution]

@jgoldsmith

The APP Owns Data demo requires a Native app, please ensure that you're not using a Web App.

[alex_cook]

What is a "native" app? When I login to Azure Portal, I don't see "native" app, I only see Web App or Mobile App. 

[svenkle]

"The demo requires a native app" is something thats sort of hard to find in any of the documentation. I got this to work by using dev.powerbi.com/apps and http://radacad.com/integrate-power-bi-into-your-application-part-1-register-your-app