An unknown error occurred interacting with the Federated Authentication Service. Storefront will show event ID 28 with error showing '.Could not contact any Federated Authentication Servers'įailed to launch the resource 'ApplicationName' using the Citrix XML Service at address '?'. Launching an application or desktop fails when StoreFront is configured for FAS/SAML authentication.Įrror seen when user tries to launch an application or desktop: