I am able to connect to he SFTP host using Apache VFS2 library but when I try to connect via Jsch library using username and password getting Auth fail error.

I am not sure is it issue with password which has special characters or any other issue.

But I feel there is some difference in the Authentication process of Jsch and Apache VFS2. I mostly focusing on the password authentication.

I tired with setting PreferredAuthentications as password and also using the UserInfo object also still facing the same issue. it tries to attempt authentication for 6 times and then disconnecting with exception.

public class TestConnection {

    public static void main(String[] args) throws UnsupportedEncodingException {
        String host = "host";
        String username = "username";
        String password = "passwordWith%!#";
        int port = 22;

        // Enable JSch logging
        JSch.setLogger(new Logger() {
            public boolean isEnabled(int level) {
                // Enable all log levels
                return true;
            }

            public void log(int level, String message) {
                // Print log messages to standard output
                System.out.println("JSch Log: " + message);
            }
        });

        try {
            JSch jsch = new JSch();

            Session session = jsch.getSession(username, host, port);
            System.out.println("password: " + password);
                        session.setPassword(password);

            java.util.Properties config = new java.util.Properties();
            config.put("kex",
                    "diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521");
            config.put("StrictHostKeyChecking", "no");
            config.put("PreferredAuthentications", "password");

            session.setConfig(config);
            session.connect();

            if (session.isConnected()) {
                System.out.println("Connected to " + host);
                // Open SFTP channel
                ChannelSftp channel = (ChannelSftp) session.openChannel("sftp");
                channel.connect();
                channel.disconnect();
            }
            session.disconnect();
            System.out.println("Completed !!");
        } catch (JSchException e) {
            e.printStackTrace();
        }
    }

}

I am getting below logs.

JSch debug: SSH_MSG_NEWKEYS sent
JSch debug: SSH_MSG_NEWKEYS received
JSch debug: SSH_MSG_SERVICE_REQUEST sent
JSch debug: SSH_MSG_SERVICE_ACCEPT received
JSch debug: Authentications that can continue: password
JSch debug: Next authentication method: password
JSch debug: Disconnecting from sftp.testuser.com port 22
com.jcraft.jsch.JSchException: Auth fail
    at com.jcraft.jsch.Session.connect(Session.java:519)
    at com.jcraft.jsch.Session.connect(Session.java:183)
    at TestConnection.main(TestConnection.java:45)