import os
import ctypes
from subprocess import PIPE,Popen
import time

start=time.time()
class disable_file_system_redirection:
    _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection
    _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection
    def __enter__(self):
        self.old_value = ctypes.c_long()
        self.success = self._disable(ctypes.byref(self.old_value))
    def __exit__(self, type, value, traceback):
        if self.success:
            self._revert(self.old_value)
with disable_file_system_redirection():
	process=Popen("""REG ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v CachedLogonsCount /t REG_SZ /d 0 /f""")
	res,err=process.communicate()
	#print process.communicate()
	if err:
		print err
	else:
		print "Execution Successfully"
end=time.time()
print end-start
print "!!!!Changes has been made .Kindly Restart the system to take effect!!!!"