Azure AD, Active Domain & Seamless Sign On

My aim is to acquire silently an Azure AD token from a Domain joined workstation whose domain is connected to Azure AD through Azure AD Connect.

In order to do that I've built the following scenario:

• I configured a Windows Server and an Active Domain on it
• I connected the Active Domain to Azure AD using Azure AD Connect
• I configured the Seamless Sign-On: in fact, if I use a web-browser from a domain joined machine to navigate to the url https://myapps.microsoft.com/my_azure_domain.onmicrosoft.comI'm logged in correctly without user interaction
• If I use this example in order to obtain an Azure AD JWT Token interactively from a domain joined workstation (using the Textual Prompt) everything works fine
• If I use the same example in order to obtain an Azure AD JWT Token silently from a domain joined workstation (using the Windows-integrated security - UserCredential) I obtain the following error:

Inner Exception : password_required_for_managed_user: Password is required for managed user

What am I missing?

Thanks,

#azure