Unsupported command-line flag: --ignore-certificate-errors

Question

Using Python 2.7.5, python module selenium (2.41.0) and chromedriver (2.9).

When Chrome starts it displays a message in a yellow popup bar: "You are using an unsupported command-line flag: --ignore-certificate-errors. Stability and security will suffer." This simple example reproduces the problem.

from selenium import webdriver
browser = webdriver.Chrome()
browser.get("http://google.com/")

How do I remove this command-line flag in python selenium?

Here is pretty same question http://stackoverflow.com/q/23834413/2504101 but solution seems to be different — olyv, Jun 11 '14 at 18:42
Accepted answer is now obsolete: @Shawn Erquhart has it right. No fiddling with Chrome options is needed, no warnings shown. Chrome 2.20 works out of the box. — Peter M. - stands for Monica, Nov 13 '15 at 17:51

Loknar · Answer 1 · 2014-06-24T12:13:03.593

13

This extra code removes the --ignore-certificate-errors command-line flag for me. In my opinion the arguments that can be added to webdriver.Chrome() could (and should) be better documented somewhere, I found this solution in a comment on the chromedriver issues page (see post #25).

from selenium import webdriver
options = webdriver.ChromeOptions()
options.add_experimental_option("excludeSwitches", ["ignore-certificate-errors"])
browser = webdriver.Chrome(chrome_options=options)
browser.get("http://google.com/")

edited Jun 24 '14 at 12:13

answered Jun 11 '14 at 17:32

Loknar

1,169
2
13
38

1

Tried but didn't work for me (Python 2.7.8, selenium 2.42.1... not sure which driver version I'm using... and Chrome is version 37.0.2062.120 m. I'm on Windows 7 with SP1.) – ArtOfWarfare Sep 16 '14 at 15:00

score 3 · Accepted Answer · answered Oct 17 '14 at 18:30

3

This issue is resolved as of Chromedriver 2.11 (released Oct 2014). Updating will now do the trick.

answered Oct 17 '14 at 18:30

Shawn Erquhart

1,820
2
17
30

score 2 · Answer 3 · answered Feb 27 '15 at 10:34

2

you can use the following flag --test-type

            var options = new ChromeOptions();
            options.AddArguments(new[] {
                "--start-maximized",
                "allow-running-insecure-content", 
                "--test-type" });

            return new ChromeDriver(options);

answered Feb 27 '15 at 10:34

Byron

691
9
9

that's javascript, not python, but yeah, there was some way to use the test-type flag to get rid of the popup bar and still ignore certificate errors – Loknar Feb 27 '15 at 10:41

score 1 · Answer 4 · answered Feb 27 '15 at 13:22

This is what I'm currently using in Java to get around this issue but I don't know how Python works but worth a try anyway

ChromeOptions chrome = new ChromeOptions();
chrome.addArguments("test-type");
        capabilities.setCapability(ChromeOptions.CAPABILITY, chrome);
        capabilities.setCapability("chrome.binary",
                "C:\\set path to driver here\\chromedriver.exe");

score 1 · Answer 5 · answered Feb 17 '16 at 09:06

    options = webdriver.ChromeOptions()

    options.add_argument('test-type')
    chromedriver = 'resources/chromedriver.exe'



    os.environ["webdriver.chrome.driver"] = chromedriver

    self.driver = webdriver.Chrome(chromedriver,chrome_options=options)

score 1 · Answer 6 · answered Nov 16 '16 at 20:45

I was having this problem using Selenium2 with Robot on a Mac. The problem ended up being that I had the wrong version of chromedriver installed on my system...

$ chromedriver
Starting ChromeDriver (v2.9.248307) on port 9515    <<Version 2.9 was the problem

I found it in /usr/local/bin and just removed it and replaced it from the official download page and it seems to have cleared it all up...

$ chromedriver
Starting ChromeDriver 2.25.426935 (820a95b0b81d33e42712f9198c215f703412e1a1) on port 9515
Only local connections are allowed.

Unsupported command-line flag: --ignore-certificate-errors

6 Answers6

Linked