Why does my STS client get this error? "The value of the 'type' property could not be parsed.Verify that the type attribute of 'issuerNameRegistry..."

Question

I frequently encounter this error and my efforts had not any result. Error :

ID8030: The value of the 'type' property could not be parsed.Verify that the type attribute of 'issuerNameRegistry type="Webapp1.TrustedIssuerNameRegistry,webapp1" element is correct.

This is my TrustedIssuerNameRegistry class :

    namespace Webapp1
{
    public class TrustedIssuerNameRegistery : IssuerNameRegistry
    {
        private string issuerName = string.Empty;

        public override string GetIssuerName(SecurityToken securityToken)
        {
            if (securityToken != null)
            {
                X509SecurityToken x509Cert = securityToken as X509SecurityToken;
                if (x509Cert != null && x509Cert.Certificate.SubjectName.Name == "CN=busta-ip1sts.com")
                {
                    issuerName = x509Cert.Certificate.SubjectName.Name;
                }
            }
            if (string.IsNullOrEmpty(issuerName))
            {
                throw new SecurityTokenException("Untrusted issuer.");
            }

            return issuerName;
        }

        public override string GetIssuerName(System.IdentityModel.Tokens.SecurityToken securityToken,
                                             string requestedIssuerName)
        {
            return base.GetIssuerName(securityToken, requestedIssuerName);
        }
    }
}

And this is my web.config configuration :

  <system.identityModel>
<identityConfiguration>
  <certificateValidation certificateValidationMode="PeerTrust" trustedStoreLocation="LocalMachine" revocationMode="Online"/>
  <audienceUris>
    <add value="http://localhost:7382/"/>
    <add value="http://localhost:50466/"/>
  </audienceUris>
  <issuerNameRegistry type="Webapp1.WsFederationRequestValidator"></issuerNameRegistry>
   </identityConfiguration>

Answer 1

Try changing your web.config identityConfiguration to this:

<issuerNameRegistry type="Webapp1.WsFederationRequestValidator, Webapp1" />

and see if that helps. Also, make sure your reference to System.IdentityModel.Tokens.ValidatingIsserNameRegistry is correctly setup.

You may have to pull the latest Microsoft Token Validation Extension for Microsoft .Net Framework 4.5 from NuGet.