X509Certificate.CreateFromCertFile - the specified network password is not correct

Question

I have a .NET application that I want to use as a client to call an SSL SOAP web service. I have been supplied with a valid client certificate called foo.pfx. T

Answer 1

Turns out that I was trying to create a certificate from the .pfx instead of the .cer file.

Lesson learned...

• .cer files are an X.509 certificate in binary form. They are DER encoded.
• .pfx files are container files. Also DER encoded. They contain not only certificates, but also private keys in encrypted form.