Skipping Kerberos authentication prompts with JSch [duplicate]

Answer 1

Try adding this:

config.put("PreferredAuthentications","publickey,keyboard-interactive,password");
session.setConfig(config);

Answer 2

You have a Kerberos/GSSAPI authentication set as the preferred, yet you do not seem to actually use/want it. As you do not specify any username or password for the Kerberos prompts.

The solution is to remove the Kerberos/GSSAPI (gssapi-with-mic) from the list of preferred authentication methods:

session.setConfig(
    "PreferredAuthentications", 
    "publickey,keyboard-interactive,password");

Reference: SFTP connection through Java asking for weird authentication.