My Windows authentication code no longer working now

Question

Note: The same code works well earlier, but now it's not working. My below code for windows authentication was working well for over a year. But for the last few days it is longer working now. I am not able to identify exact reason for that.

from selenium import webdriver

import time

import win32com.client

driver=webdriver.Chrome('D:/Software/BrowsersDriver/ChromeDriver/chromedriver.exe')

driver.maximize_window()

driver.get("authentication windows url")

shell = win32com.client.Dispatch("WScript.Shell")   

shell.Sendkeys("username")  

time.sleep(1)

shell.Sendkeys("{TAB}")

time.sleep(1)

shell.Sendkeys("password") 

time.sleep(1)

shell.Sendkeys("{ENTER}")

time.sleep(5)

driver.quit()

2018-04-02 07:09:28,230 INFO: Imported existing <module 'comtypes.gen' from 'C:\Python27\lib\site-packages\comtypes\gen\__init__.pyc'>

2018-04-02 07:09:28,230 INFO: Using writeable comtypes cache directory: 'C:\Python27\lib\site-packages\comtypes\gen'

. I am using python 2.7.12 and latest version of chrome driver.

Answer 1

Try below of the options

driver.switchTo().alert();

or

driver.switchTo().activeElement();

before typing credentials?