How to troubleshoot the exception, Could not create TLS secure channel?
Hello there,
I have this C# code that consumes a SOAP WS and it was working properly for years. However, since recently it started to throw the following exception:
The request was aborted: Could not create SSL/TLS secure channel.
Basically it imports the certificate FILE (.pfx) needed for authentication.
request.ClientCertificates.Add(new X509Certificate(certificateFile, certPassword));
Well, it works 9 times as expected and then the 10th time it will not add the certificate. This results in getting Error 403 (Forbidden).
Honestly, I have no clue how to troubleshoot this issue especially because it happens only sporadically.
I checked the IIS Logs and found nothing helpful.
Your comments and suggestions would be greatly appreciated.