WCF error: "The X.509 certificate CN=localhost chain building failed ..."

Question

I'm getting this error while attempting to make my WCF client and server talk to each other.

The X.509 certificate CN=localhost chain building failed. The certificate that was used has a trust chain that cannot be verified. Replace the certificate or change the certificateValidationMode. A certificate chain processed, but terminated in a root certificate which is not trusted by the trust.

Everything works perfectly if I turn SSL certificates off.

question from:https://stackoverflow.com/questions/4256520/wcf-error-the-x-509-certificate-cn-localhost-chain-building-failed

Answer 1

I fixed the problem by turning off validation in my code like this:

client.ClientCredentials.ServiceCertificate.Authentication.CertificateValidationMode = 
System.ServiceModel.Security.X509CertificateValidationMode.None;

Where client is an instance of my service reference.