code show as below

# -*- coding: utf-8 -*-
import wmi,json
import time
import traceback
import sys
logfile = 'logs_%s.txt' % time.strftime('%Y-%m-%d_%H-%M-%S', time.localtime())
#远程执行bat文件
def call_remote_bat(ipaddress,username,password):
    try:
        #用wmi连接到远程服务器
        conn = wmi.WMI(computer=ipaddress, user=username, password=password)
        filename=r"C:3.bat"   #此文件在远程服务器上
        cmd_callbat = "start c:3.bat"
        conn.Win32_Process.Create(CommandLine=cmd_callbat)  #执行bat文件
        print "执行成功!"
        return True
    except Exception,e:
        log = open(logfile, 'a')
        log.write(('%s, call bat Failed!\r\n') % ipaddress)
        log.close()
        print traceback.print_exc(file=sys.stdout)
        return False
    return False
if __name__=='__main__':

    call_remote_bat(ipaddress="192.168.110.110", username="Administrator",password="12345678")

报错情况如下：
    C:\Python27\python.exe D:/untitled/远程连接.py
Traceback (most recent call last):
  File "D:/untitled/Զ������.py", line 11, in call_remote_bat
    conn = wmi.WMI(computer=ipaddress, user=username, password=password)
  File "C:\Python27\lib\site-packages\wmi.py", line 1290, in connect
    handle_com_error ()
  File "C:\Python27\lib\site-packages\wmi.py", line 241, in handle_com_error
    raise klass (com_error=err)
x_access_denied: <x_wmi: Unexpected COM Error (-2147352567, '\xb7\xa2\xc9\xfa\xd2\xe2\xcd\xe2\xa1\xa3', (0, u'SWbemLocator', u'\u62d2\u7edd\u8bbf\u95ee\u3002 ', None, 0, -2147024891), None)>
None

What kind of error is this? Can any expert help to answer it? Thank you~