I keep getting "The remote server returned an error: (407) Proxy Authentication required." error message
I have the same issue, and registering my account didn't help. I keep getting "The remote server returned an error: (407) Proxy Authentication required." error message
I'm having the same issue when using ArcGIS Desktop 10.0. File --> ArcGIS Online... produces that error. Yes we have a proxy firewall to traverse when going onto the Internet. How do I enable ArcGIS to use the proxy?
Eduardo,
We had a ticket out with ESRI, and no one ever mentioned needing to set up a proxy authentication from the ArcCatalog Connections menu.