Sorry for asking the question again.
There is a self-signed certificate from the customer's WebDAV server.
In this case, a "SecureChannelFailure" error occurs and the Exception message is "Alert:UnrecognizedName (Level:Warning, Source:Remote)." is.
I have set it up to receive all certificates as shown below.
creator.Settings.SslAcceptAllCertificates = true;
What does this error mean and how should I deal with it?