ArcGIS Pro does not display some secured map services from ArcGIS Server if the 'Security directories security enabled' check box is checked in the server.
Tested with ArcGIS Pro 1.1. Unable to reproduce the error.
対処法
1. Sign in to ArcGIS.com > My Content.
2. Click My Content
3. Click Add Items and navigate to 'From the web'.
4. Paste the following link into the URL textbox: http://wssecured.esrifrance.fr:6080/arcgis/rest/services/FranceRaster/France_FranceRaster_Standard/MapServer.
5. Input the username and password.
6. Check the 'Store credentials with service item.' option.
7. Add the item.
8. Open ArcGIS Pro, and open the Project window.
9. Click Portal and find 'France_FranceRaster_Standard', and add it to the map.