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Let me explain my situation.

I created a self-signed certificate and installed it in the Trusted Root Certification Authorities section in MMC.

I then created two certificates using the self-signed certificate:

  1. A certificate with subject name "localhost"
  2. A certificate with subject name "test.com"

I then installed both certificates into the Personal certificates section in MMC.

I then deployed a web service as HTTPS (SSL with accept client certificates) in IIS. The certificate used to deploy the web service is the one with subject name "localhost".

Now, I have a client who wants to connect to the web service. I successfully added a web reference to the service. This is the code:

 ClientServices web_service = new ClientServices(); X509Store store = new X509Store(StoreName.My, StoreLocation.LocalMachine); store.Open(OpenFlags.ReadOnly); X509Certificate2Collection col = store.Certificates.Find(X509FindType.FindBySubjectName, "test.com", true); if (col.Count == 1) { ServicePointManager.Expect100Continue = true; ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls; web_service.ClientCertificates.Add(col[0]); try { string hello = web_service.HelloWorld(); int add = web_service.add(4, 31); int sub = web_service.subtract(30, 10); Console.WriteLine(hello); Console.WriteLine(add); Console.WriteLine(sub); } catch (WebException e) { Console.WriteLine(e.Message.ToString()); } } else { Console.WriteLine("The certificate was not found!"); } Console.ReadKey();

As you can see, I am sending the "test.com" certificate along with the web service request. Unfortunately, I am getting this exception:

The request was aborted: Could not create SSL/TLS secure channel

How can I solve this problem? I have already wasted 3 hours on this issue. Please help me.

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1 Answer 1

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private void Somewhere() { ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(AllwaysGoodCertificate); } private static bool AllwaysGoodCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors policyErrors) { return true; }

Source: The request was aborted: Could not create SSL/TLS secure channel

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1 Comment

Thanks for the tip. I managed to solve the problem by beginning from scratch with generating the certificates all over again. It then worked perfectly. I don't know why but then it worked.

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