该请求已中止：使用X509Certificate2时无法创建SSL / TLS安全通道

Question

I have a Web API that requires Client Certificate Authentication, Whenever I provide correct Client Certificate I get an error Could not Create SSL/TLS Secure Channel.

My app is hosted on IIS Server from where I am accessing the API. While executing the API through code I can get the desired result but when the app is hosted on IIS and then if the request is executed then I get the error.

My Code :

     myHttpWebRequest.ClientCertificates.Add(New X509Certificate2(certificate, myService.CertificateSettings.Certificate_Password.Decrypt))
     Dim response = myHttpWebRequest.GetResponse()

What could be the possible reason?

Answer 1

this can be complex to resolve - you can ignore these errors using the following code - not recommended...

   ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) => {      
      return true;
   };

Alternatively examine the error and try to fix your certificate:

     ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, errors) =>
        {
            SslPolicyErrors result = errors;
            Console.WriteLine(result);

        };

What SSL policy errors do you get?