Following a change to the Windows proxy settings on the machine hosting Active Roles, the Active Roles service fails to start successfully.
Verbose logging shows the following exception stack:
[Error] (severity=Minor) System.AggregateException: One or more errors occurred. ---> System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required.
at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)