Opc.Ua.ServiceResultException: 'SHA1 signed certificates are not trusted.' when I try to connect with user and password.

[Panguaneta]

When I try to connect with user and password I get a Opc.Ua.ServiceResultException with this message:
"SHA1 signed certificates are not trusted."

This is my code

`
OpcUaClientBuilder builder = new OpcUaClientBuilder()
.WithEndpoint(url)
.WithAutoAcceptUntrustedCertificate(true)
.WithAccount(user, password)
.WithEventCertificateValidationHandler(new CertificateValidationEventHandler(OnCertificateValidation))
.WithClientId(clientName);

private void OnCertificateValidation(CertificateValidator validator, CertificateValidationEventArgs e)
{
if (e.Error.StatusCode == StatusCodes.BadCertificateUntrusted)
{
e.Accept = true;
}
}
`

How can I connect to my opc with just user and passowrd?
How I can set RejectSHA1SignedCertificates to false?

Regards.

[showerror]

.WithConfiguration((ac) => { ac.CertificateValidator = new CertificateValidator() { RejectSHA1SignedCertificates = false }; })
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