We are implementing a custom authentication plugin for RDP gateway according to the sample provider by Microsoft.
We are now trying to customize the RDP Web Access logon page to use the ActiveX RDP control to pass the token information.
We have tried using serialized RDP file using IMSRDPClientShell and It fails with -2147012890 on MsRdpClientShell.Launch() when the parameter is set to gatewaycredentialssource:i:5 as required by the sample. If the value is below 5 this works.
We have also tried with the MSRDPClient8 interface by setting the required properties( on the MSRDPClientTransportSettings3 we got an error message:
To use this program or computer, you must first log on to an authentication website. Contact your network administrator for assistance
This works if we invoke directly the RDP client application.
How can we pass this parameter to the control so it can be sent to the gateway ?