Re: The value supplied is not valid, or the property is read-only. Change the value, and then try again
                What you pass to 
See https://winscp.net/eng/docs/faq_hostkey#automation
For general information also see SSH host key/TLS host certificate fingerprint “…” does not match pattern “…”.
        SessionOptions.SshHostKeyFingerprint seems like a full host key. While the property accepts a hostkey fingerprint.
See https://winscp.net/eng/docs/faq_hostkey#automation
For general information also see SSH host key/TLS host certificate fingerprint “…” does not match pattern “…”.