Hello,

I just upgraded the Prosys OPC UA Java SDK libs in a JavaFX application of mine. The application was using SDK version 1.4.4-6832. I upgraded to 3.1.4-514.
After upgrading and making code changes in accordance with the changes in the SDK, the application no longer works on a Windows 7 Pro SP1 machine it was running happily on previously. It works fine on my Windows 10 development machine however.

The problem seems to be in a call to UAClient.setCertificateValidator. Here is the code I have:
UaClient uaClient = new UaClient(serverUrl);
final PkiDirectoryCertificateStore certStore = new PkiDirectoryCertificateStore();
final DefaultCertificateValidator validator = new DefaultCertificateValidator(certStore);
uaClient.setCertificateValidator(validator);

The uaClient.setCertificateValidator(validator) call fails with the following exception:
java.lang.NoSuchMethodError: com.prosysopc.ua.client.UaClient.setCertificateValidator(Lorg/opcfoundation/ua/transport/security/CertificateValidator;)V

Is Win7 not supported by the client SDK anymore in version 3.* ? Again, this works fine for me in Win10 and in Win2012 Server.

Thanks in advance!

Hordur Thordarson
EFLA consulting engineers hf / Lausn hugbunadur ehf