OAuth functionality in Webappbuilder Developer Edition

[ARROCAL]

Hello;

I have developed a Webappbuilder Developer Edition (WAB) application, and I have deployed it in IIS.

I want to integrate the OAuth functionality.

I have created an application in Portal for ArcGIS and I have registered the application URL of the IIS (WAB) in Portal for ArcGIS, and I have written the App Id in the config.json file of the application (IIS-WAB).

When I start the application in a browser with the IIS-WAB URL, this windows is displayed.

And then, this other window is displayed:

Is it possible to not show the first window?

Thank you.