http://developers.de/blogs/damir_dobric/archive/2014/06/12/aggregateexception-when-starting-orleansazuresilo.aspxWhen starting OrleansAzureSilo you might get following AggregateException : " No valid combination of account information found." This error is wrapped around FormatException which does not come from Orleans runtime but from Microsoft.WindowsAzureenCommunityServer 2008 SP1 (Build: 30619.63)