I'm currently doing Codeception acceptance tests and ran into the Error:
[Facebook\WebDriver\Exception\UnknownServerException] Unable to find executable for: taskkill
The rest of the Code is working perfectly fine. It opens the Browser (Firefox) and it closes it after the tests are done, but I still get this error.
Google told me to add C:\Windows\system32 to the PATH, which I did, but I'm still getting the Error.
The issue appears to be that it cannot find 'taskkill' on the machine running the tests (what selenium calls 'nodes' in a selenium grid setup).
Make sure that taskkill is installed on the node and that their PATH environment variable contains C:\Windows\system32
References/Useful links: