X509Certificate - Keyset does not exist

Question

I have a WinForms application that consumes a WCF, and pass as a parameter to a function a certificate:

mySvcClient.SendDocument(cert.Export         


        

Answer 1

I was facing the same issue, and I don't know how(shame on me), but it worked:

var certificate = new X509Certificate2(filePath, password,
    X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.Exportable | X509KeyStorageFlags.PersistKeySet);

certificate.PrivateKey; // before: error "KeySet does not exist"!

using (certificate.GetRSAPrivateKey()) { } // pure black magic

certificate.PrivateKey; // after: just works! lol

I hope someone can answer this mystery.