"Integrated windows authentication" throws error when connecting with an IWA authenticated Portal for ArcGIS instance.

[gayl0000]

Add a IWA Portal (such as https://kghime.esri.com/portal or https://dev0004327.esri.com/portal) in the text box and click the button "Search IWA Secured Portal"
Error is thrown saying "Portal sign in failed".
See attached image "IWA_SampleApp_Error.JPG"

Note:
The same application works in ArcGIS Runtime SDK for .NET UWP

[gayl0000]

I've found that this is because the sample is not designed to work with self-signed challenges. The code

    if (authenticationChallenge.getType() == AuthenticationChallenge.Type.USER_CREDENTIAL_CHALLENGE
        && authenticationChallenge.getRemoteResource() instanceof Portal {

      // If challenge has been requested by a Portal and the Portal has been loaded, cancel the challenge
      // This is required as some layers have private portal items associated with them and we don't
      // want to auth against them
      if (((Portal) authenticationChallenge.getRemoteResource()).getLoadStatus() == LoadStatus.LOADED) {
        return new AuthenticationChallengeResponse(AuthenticationChallengeResponse.Action.CANCEL,
            authenticationChallenge);
      }

can be replaced with something like the following to allow this to work.

AuthenticationManager.setSelfSignedCertificateListener(new SelfSignedCertificateListener() {

      @Override
      public SelfSignedResponse checkServerTrusted(X509Certificate[] x509Certificates, String s) {
        SelfSignedResponse response = new SelfSignedResponse(true, false);
        return response;
      }
    });

 if ((authenticationChallenge.getType() == AuthenticationChallenge.Type.SELF_SIGNED_CHALLENGE ||
        authenticationChallenge.getType() == AuthenticationChallenge.Type.USER_CREDENTIAL_CHALLENGE)
        && (authenticationChallenge.getRemoteResource() instanceof Portal)
        || authenticationChallenge.getRemoteResource() instanceof UnknownRemoteResource) {

      // If challenge has been requested by a Portal and the Portal has been loaded, cancel the challenge
      // This is required as some layers have private portal items associated with them and we don't
      // want to auth against them
      if (authenticationChallenge.getRemoteResource() instanceof Portal
          && ((Portal) authenticationChallenge.getRemoteResource()).getLoadStatus() == LoadStatus.LOADED) {
        return new AuthenticationChallengeResponse(AuthenticationChallengeResponse.Action.CANCEL,
            authenticationChallenge);
      }

[gayl0000]

this is for https://devtopia.esri.com/runtime/java/issues/2020

[tschie]

Closing this issue to be handled internally.