Are you trying to access the WSDL in a web browser using the generated CSP page? What is the URL that you are using? The application path of the URL should correlate with a web application definition defined in HealthShare that can be edited in the System Management Portal. This web application definition is likely set to Password Authentication. By setting the web application definition to Unauthenticated Access, a login screen should not be presented when trying to view the WSDL.