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When I run my tests on Chrome I often get a WebdriverException that Chrome is not reachable. It doesn't happen every time. Maybe once every 15 times. I am having to run everything on Windows machines and I have the latest Chrome, Chromedriver, Selenium-Webdriver versions.

I've tried setting the environmental variable "DBUS_SESSION_BUS_ADDRESS=/dev/null". Doesn't help at all.

Anyone come across this and found a solution?

org.openqa.selenium.WebDriverException: chrome not reachable
  (Driver info: chromedriver=2.35.528161 (5b82f2d2aae0ca24b877009200ced9065a772e73),platform=Windows NT 6.1.7601 SP1 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 62.52 seconds
Build info: version: '2.52.0', revision: '4c2593cfc3689a7fcd7be52549167e5ccc93ad28', time: '2016-02-11 11:22:43'
System info: host: 'CORPMNA7158A', ip: '10.26.195.163', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_144'
Driver info: org.openqa.selenium.chrome.ChromeDriver
undetected Selenium
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1 Answers1

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The error does gives us some hint as follows :

org.openqa.selenium.WebDriverException: chrome not reachable

Which essentially implies that chromedriver binary is unable to spawn a new Chrome Browser process.

Your main issue is the version compatibility among the binaries you are using as follows :

  • You are using chromedriver=2.35.528161 (released 2018-01-10)
  • Release Notes of chromedriver=2.35 clearly mentions the following :

Supports Chrome v62-64

  • You mentioned of using latest Chrome. I suppose it is chrome=65.x
  • You are using Selenium Version 2.52.0 (released 2016-02-11 11:22:43) [as per the error stack trace within your question]

So the time gap between the release of Selenium Version 2.52.0 and chromedriver=2.35.528161 is almost 2 Years and are not compatible. Hence ChromeDriver is unable to spawn the new Chrome Browser process at times.

Solution

  • Keep the ChromeDriver at v2.35 level.
  • Downgrade Chrome to stable Chrome v64.x levels. (as per ChromeDriver v2.35 release notes)
  • Upgrade Selenium to current levels Version 3.8.1.
  • Execute your Test.
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    That was it. I just inherited this project and didn't notice Selenium was so out of date. Updated to latest version and problem went away. – Conner Jan 18 '18 at 20:55