I have installed Portal on my local network and configured web adapter and server as a federated server. All seems to work fine. I am now trying to configure ArcGIS Desktop to publish services to Portal rather than ArcGIS Online.
When I go to ArcGIS Administrator I click "Advanced" and then click "Manage Portal Connections" I click add. I enter https://server.domain.com/arcgis I get the error stated above. If I don't use the https:// it accepts the parameter I can click connect and all seems fine, but when I open ArcMap and click sign in I get an error "An Error has occured. Check you network connection and try again" (this is not a typo that is quoted)
I am not sure if this is the correct way to publish to Portal. I can just go to publish then add a connection with the portal address and it works.
I tried unchecking the security value stated in this threadArcGIS for Desktop Cannot Connect Portal With Active Directory Sign In but no luck.
I am running 10.3.1 Server and Portal. And 10.2 Desktop