Hello,
thank you for your fast reply.
In my server option i've already disabled certifcates verifies; in effect one time i enabled that for mistake and an invalid certificate dialog appeared on supervisor computer.
I understood the reason of safety, but i use OpcUa not for collect data, but like a principal comunication between supervisor software and our machines; i can't think every 4-5 years that machines will stop to work waiting my certificate uodate; this the reason of my question.

One more thing: i discovered this issue casually in these days and, in my old supervisor i didn't write the code that you suggest me; i tried on a machine to change the date of Supervisor Pc and of OpcUa Server ten years forward but no problems happened; do you think is enough to be sure that machines already delivered will not have this kind of problem?

Thank you in advance for your kindly reply

Best Regards
Christian

Hello,
i wrote this request in Contact form before see that it is not for technical issuesì, i apologize for that.

with your product we develop .Net OpcUa client; OpcUa server is (in the most of cases) a Schneider PLC or Motion Controller.
Schneider suggest us to ask you if is possible to disable the server certificate verify becuase their certificate will expire in some years.

Thanks in advance for your kindly reply

Christian