["python","selenium","python-3.x","selenium-webdriver","browser"]
How to deal with certificates using Selenium?

I am using Selenium to launch a browser. How can I deal with the webpages (URLs) that will ask the browser to accept a certificate or not? In Firefox, I may have a website like that asks me to accept its certificate like this: On the Internet Explorer browser, I may get something like this: On Google Chrome: I repeat my question: How can I automate the acceptance of a website's certificate when I launch a browser (Internet Explorer, Firefox and Google Chrome) with Selenium (Python programming language)?
For the Firefox, you need to set accept_untrusted_certs FirefoxProfile() option to True: from selenium import webdriver profile = webdriver.FirefoxProfile() profile.accept_untrusted_certs = True driver = webdriver.Firefox(firefox_profile=profile) driver.get('https://cacert.org/') driver.close() For Chrome, you need to add --ignore-certificate-errors ChromeOptions() argument: from selenium import webdriver options = webdriver.ChromeOptions() options.add_argument('ignore-certificate-errors') driver = webdriver.Chrome(chrome_options=options) driver.get('https://cacert.org/') driver.close() For the Internet Explorer, you need to set acceptSslCerts desired capability: from selenium import webdriver capabilities = webdriver.DesiredCapabilities().INTERNETEXPLORER capabilities['acceptSslCerts'] = True driver = webdriver.Ie(capabilities=capabilities) driver.get('https://cacert.org/') driver.close() Actually, according to the Desired Capabilities documentation, setting acceptSslCerts capability to True should work for all browsers since it is a generic read/write capability: acceptSslCerts boolean Whether the session should accept all SSL certs by default. Working demo for Firefox: >>> from selenium import webdriver Setting acceptSslCerts to False: >>> capabilities = webdriver.DesiredCapabilities().FIREFOX >>> capabilities['acceptSslCerts'] = False >>> driver = webdriver.Firefox(capabilities=capabilities) >>> driver.get('https://cacert.org/') >>> print(driver.title) Untrusted Connection >>> driver.close() Setting acceptSslCerts to True: >>> capabilities = webdriver.DesiredCapabilities().FIREFOX >>> capabilities['acceptSslCerts'] = True >>> driver = webdriver.Firefox(capabilities=capabilities) >>> driver.get('https://cacert.org/') >>> print(driver.title) Welcome to CAcert.org >>> driver.close()