WCF services under Azure have a nasty habit of not really telling you what you need to know. Having fought through this – and having been challenged to find exactly what I needed in a Google search, I thought I’d add some more specific info here. Before I do, let me say thanks to Steve Marx, whose blog posts and forum answers pointed me in the right direction. Here are the exceptions that surfaced: ConfigurationErrorsException: Could not create Microsoft.WindowsAzure.Diag... ...