I am recently seeing that attempting to connect to externally hosted, secure services are getting denied in ArcGIS online. I have a AGO Dashboard app that uses a a web map with secure services hosted on our public facing servers via AGS. I am getting Access Control Allow Origin errors when attempting to log into these services. I have added our external server as trusted server in AGO...am I missing something to get the login to validate?
Also - I can login fine as long as I'm on the local internal network...I am getting denied if I'm on an external network.