The client was attempting to issue the FTP USER subcommand to change the login identity from current user to new user. The FTP server rejected the switch because FTP.DATA specifies ANONYMOUSLEVEL 3, which enables enhanced security checks.
The USER command is rejected. The FTP client is still logged in as user current user. Control is returned to the client for further command processing.
Issue the FTP CLOSE subcommand to end the session with the FTP server. Then issue the FTP OPEN subcommand to reinitialize the connection. Then log in as user new user.
None.