SessionNotCreatedException: Message: session not created from disconnected: unable to connect to renderer with ChromeDriver 2.45 Chrome v71

This error message...

selenium.common.exceptions.SessionNotCreatedException: Message: session not createdfrom disconnected: unable to connect to renderer

...implies that the ChromeDriver was unable to initiate/spawn a new WebBrowser i.e. Chrome Browser session.

You need to consider a fact:

• As you are using Mac OS X the Key executable_path must be supported with a Value as :

  '/Users/qa/Documents/Python/chromedriver'

• So line will be:

  driver = webdriver.Chrome(executable_path='/Users/qa/Documents/Python/chromedriver')

Note: The path itself is a raw path so you don't need to add the switch r and drop it.

Additionally, ensure that /etc/hosts on your system contains the following entry :

127.0.0.1 localhost.localdomain localhost#or127.0.0.1 localhost loopback

I had a similar error, first getting the error message:

selenium.common.exceptions.WebDriverException: Message: unknown error: Chrome failed to start: exited normally.(unknown error: DevToolsActivePort file doesn't exist)

This was solved by adding options.add_argument("--remote-debugging-port=9230") to the ChromeOptions(). And the program runs once and I gained the same error message as above:

selenium.common.exceptions.SessionNotCreatedException: Message: session not createdfrom disconnected: unable to connect to renderer(Session info: headless chrome=89.0.4389.114)

The problem here was that the chrome process does not close properly in the program so the process is still active on the debugging-port. To solve this problem close the active port sudo kill -9 $(sudo lsof -t -i:9230) and simply add the following lines to the end of the code:

driver.stop_client()driver.close()driver.quit()

Since I didn't find this answer anywhere, I hope it helps someone.

Running into this same issue on linux, specifically a raspberry pi 4 (so arm cpu). i used the chromium-browser and chromium-chromedriver package.

This is my code:

browser = Chrome(executable_path = '/usr/bin/chromedriver', options = opts)

and this is the error message:

File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main    return _run_code(code, main_globals, None,  File "/usr/lib/python3.8/runpy.py", line 87, in _run_code    exec(code, run_globals)  File "/home/ubuntu/Documents/reliant-scrape/reliant_scrape.py", line 296, in <module>    output = logon(config['headless'], config['download'], config['site'], config['creds'])  File "/home/ubuntu/Documents/reliant-scrape/reliant_scrape.py", line 75, in logon    browser = Chrome(executable_path = '/usr/bin/chromedriver', options = opts)  File "/home/ubuntu/.local/lib/python3.8/site-packages/selenium/webdriver/chrome/webdriver.py", line 76, in __init__    RemoteWebDriver.__init__(  File "/home/ubuntu/.local/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__    self.start_session(capabilities, browser_profile)  File "/home/ubuntu/.local/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session    response = self.execute(Command.NEW_SESSION, parameters)  File "/home/ubuntu/.local/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute    self.error_handler.check_response(response)  File "/home/ubuntu/.local/lib/python3.8/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response    raise exception_class(message, screen, stacktrace)selenium.common.exceptions.SessionNotCreatedException: Message: session not createdfrom disconnected: unable to connect to renderer  (Session info: headless chrome=88.0.4324.150)

Yet when I run chromedriver by itself it works fine? I added the line to /etc/hosts as well but that didn't help.