System.ServiceModel 4.0.0.0 System.Enum To be added. An enumeration that lists the ways of validating a certificate. Field 4.0.0.0 System.ServiceModel.Security.X509CertificateValidationMode The certificate is valid if the chain builds to a certification authority in the trusted root store. Field 4.0.0.0 System.ServiceModel.Security.X509CertificateValidationMode The user must plug in a custom to validate the certificate. Field 4.0.0.0 System.ServiceModel.Security.X509CertificateValidationMode No validation of the certificate is done. Field 4.0.0.0 System.ServiceModel.Security.X509CertificateValidationMode The certificate is valid if it is in the trusted people store, or if the chain builds to a certification authority in the trusted root store. Field 4.0.0.0 System.ServiceModel.Security.X509CertificateValidationMode The certificate is valid if it is in the trusted people store.