Selenium: NoSuchDriverException: Unable to obtain driver for chrome

Selenium could not find or obtain a driver executable for the browser you requested. Since Selenium 4.6, if no driver is on PATH and none is configured, Selenium runs Selenium Manager to detect the browser and download the matching driver. This exception means that whole process failed. Earlier Selenium 4 releases worded it Unable to obtain driver for chrome using Selenium Manager.; current releases end the message with a link to Selenium's driver location troubleshooting page.

Selenium Manager needs to identify the browser version and reach the driver download endpoints. Behind a corporate proxy or firewall, in offline CI, on unsupported architectures, or when the bundled selenium-manager binary is missing from a broken install, it cannot. A hard-coded driver path pointing at a file that does not exist produces the same exception.

What is not wrong: your test code and the browser itself, unless the browser is also missing.

import logging
from selenium import webdriver
from selenium.webdriver.chrome.service import Service

logging.getLogger("selenium").setLevel(logging.DEBUG)

# Default: let Selenium Manager resolve the driver
driver = webdriver.Chrome()

# Offline / locked-down CI: use a pre-installed driver
# driver = webdriver.Chrome(service=Service("/opt/drivers/chromedriver"))

In networks that block downloads, bake the browser and matching driver into the CI image and reference them explicitly. Elsewhere, rely on Selenium Manager with an up-to-date Selenium. Keep a start-up smoke test so driver resolution problems fail fast and clearly.