code: def MsgUser(msg):
    
    msg_tested_versions = ['xp', 'vista', '2008', '2003']
    msg_args = ['/c', '%SystemRoot%\\System32\\msg.exe', '*', '/TIME:0']
    host_version = platform.platform().lower()
    if not msg:
      return ('Command not ran.', 'Empty message.', -1)
    else:
      msg_args.extend([msg])
    for version in msg_tested_versions:
      if host_version.find(version) != -1:
        # pylint: disable=undefined-variable
        res = client_utils_common.Execute(
            'cmd', msg_args, time_limit=-1, bypass_whitelist=True)
        return res
    return ('', 'Command not available for this version.', -1)
docs: Sends a message to a user.
  
    Args:
      msg: Message to be displaied to user.
  
    Returns:
      res which is a tuple of (stdout, stderr, exit_status, time_taken).