Hello everybody:

I am developing a OPC UA Client to connect with WinCC Runtime Advanced . When I try to open a Session in the server, I get the exception type BadCertificateUntrusted, whit the message ´Certificate is not trusted´.

I copied the certificate generated with the code in C#

X509Certificate2 clientCertificate = config.SecurityConfiguration.ApplicationCertificate.Find();
if ( clientCertificate == null)
{
// create a new certificate an place it in the LocalMachine/Personal store.
clientCertificate = CertificateFactory.CreateCertificate(
config.SecurityConfiguration.ApplicationCertificate.StoreType,
config.SecurityConfiguration.ApplicationCertificate.StorePath,
config.ApplicationUri,
config.ApplicationName,
null,
null,
1024,
120);
config.SecurityConfiguration.ApplicationCertificate.Certificate = clientCertificate;
}

in the certs and privete folders in the path ´ProgramData/Siemens/CoRtHmiRTm/MiniWeb 14.0.1/SystemRoot/SSL/´.

Also, I installed my application certificated via MMC in the folders ´Thursted Root Certification Authorities´ and ´UA Applications´.

I apreciate some hint with my problem.

------------------------------------------------------------------------------------------
Split from WinCC Advanced V13 - OPC UA security.

Closed, because the question was posted twice.

The second thread with the subject OPC UA Client BadCertificateUntrusted is published within the conference SIMATIC WinCC (TIA Portal).

Best regards

The Helping Hand