MSEdgeDriver (Chromium) does not work with version >= 79.0.313 (Canary)

Question

I\'m using Microsoft Edge Webdriver (Chromium) with Python3 in my script.

The webdriver configuration is as follows:

driveroptions = Options()
driver         


        

Answer 1

I tried the capabilities like below, it worked, you can have a try:

{
    "desiredCapabilities": {
            "nativeEvents": false,
            "browserName": "chrome",
            "version": "",
            "platform": "ANY",
            "javascriptEnabled": true,
            ...
    }
}

Answer 2

Browser and webdriver must match the first 3 tuples in version number.

In chrome there is a version check that tells you if browser and webdriver does not match. msedge gives the more diffuse: No matching capabilities found

I'm using the chocolately Microsoft Edge Insider - Beta which installse the msedge browser, it is currently at version 79.0.309.65.

it means I can't use the latest 79.x msedgedriver which currently is at 79.0.313.0, I have to use the 79.0.309.x.

I've implemented a simple test in my selenium driver that check this before starting.

Answer 3

Finally solved my question.

1. Install/Upgrade Selenium 3.14 to Selenium 4.0.0a5
2. Change the Python code to something like the following:

# using edge directly, since you can see 'selenium.webdriver.chromium.webdriver' used in site-packages\selenium\webdriver\edge\webdriver.py
from selenium import webdriver
from selenium.webdriver.edge.options import Options
from selenium.webdriver.edge.service import Service
from selenium.webdriver.edge.webdriver import WebDriver
...
...
driveroptions = Options()
# remember to set use_chromium
driveroptions.use_chromium = True
driveroptions.add_argument('--start-maximized')
driveroptions.binary_location = env_programfiles_x86 + "\\Microsoft\\Edge\\Application\\msedge.exe"

service = Service(executable_path="msedgedriver.exe")
driver = webdriver.Edge(options=driveroptions, service=service)

driver.set_page_load_timeout(40)
driver.get(page_url)