Could you try adding the line:
<defaultProxy enabled="true" useDefaultCredentials="true"/>
into your OperationsDashboard.exe.config file? Place it at the top of the <system.net> section.
Your file will have:
<system.net>
<defaultProxy enabled="true" useDefaultCredentials="true"/>
�?� etc �?�
To your OperationsDashboard.exe.config file, run Operations Dashboard, and while it is running open Task Manager. In Task Manager, find OperationsDashboard (if you are on Windows 7, you need to find it in the Processes tab; on Windows 8 you can use the applications tab), right-click on it, and select �??Open File Location.�?� When that folder opens, you will see an OperationsDashboard.exe.config file. Open it in a text editor and add the line inside the <system.net> tag.