When attempting to set a user up for Starling authentication the error "Communication with Starling Two-Factor Authentication failed. Reason: An error occurred: An error occurred while sending the request. (60462) " is shown

Or
In Settings | Secondary Authentication when trying to add "Starling Two-Factor Authentication" clicking OK errors with
"An error occured while testing the configuration settings for this provider, 'Providername'. Please review each setting value and try again. (60515)."
Or
When attempting to logon with an existing Starling user, the error "A system error occurred and has been logged. Please try again later or contact your administrator." is shown when logging in.