I am unable to reach the ArcGIS Online's REST endpoint in Blend 4. Getting the following response from the server: (407) Proxy Authentication Required.
I am, however, able to get to that same endpoint via IE 7. Are there any proxy settings in Blend 4 that need to be configured? I haven't been able to find anything that allows me to do this inside Blend.
Are you on an internal network that requires a proxy configuration? Will it work if you are outside that network?
Morten - sorry for the delay in replying. I was out of the office. The answer is yes to both questions. I opened a Tech Support request (848823) and they are unable to reproduce it. I can get to Bing Map services just fine and use the basemaps with no problems whatsoever. I can also reach the endpoint using Internet Explorer. This only seems to be an issue inside EB 4.