ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.SystemCore Namespace / IArcGISSignOn Interface / SetSignonHandler Method
The CoreHost sign on handler

SetSignonHandler Method (IArcGISSignOn)
Set your SignOnHandler to receive challenge requests whenever a federated feature service requires authentication. This method is for use in CoreHost applications only.
Syntax
void SetSignonHandler( 
   ISignOnHandler handler
)

Parameters

handler
The CoreHost sign on handler
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.4 or higher.
See Also