I'm trying to add a railroad service to my AGO Map but I keep getting an error. Any ideas? http://wwwgisp.rrc.state.tx.us/arcgis/rest/services/rrc_public/RRC_GIS_Viewer/MapServer

[KarenLizano]

here is the service  rrc_public/RRC_GIS_Viewer (MapServer)  

Here is a link to the map where I think it is working http://wwwgisp.rrc.texas.gov/GISViewer2/  

I just want to put it in a web map?

[KarenLizano]

There is a software installed on chrome called webroot.  The IT department put it on my pc, I think that is what is blocking access.  Thank you SO much for your help.