Install the 64-bit gecko driver if you are using Firefox 64-bit edition.You can see the 32-bit gecko driver still running on my system: 32-bit Gecko driver running This caused the above error: Unable to find a matching set of capabilities. I have FireFox 64-bit edition on my system, but installed the 32-bit gecko driver. Message: Unable to find a matching set of capabilities It needs to be set only if you are using Selenium 3.Īfter downloading the Geckodriver and setting the property in my selenium script I am able to launch the latest firefox without any problem.The error “Unable to find a matching set of capabilities” when running the test script below may be caused by installing the wrong version of the Selenium web driver for Firefox: from selenium import webdriver Note: If you are using Selenium 2 then no need to set the above property. I downloaded the Geckodriver from the below link according to my system requirement:Īfter installing Geckodriver, extract it and give the path of this driver in your script like below: During the search, I found that I have to install the Geckodrivers for launching the latest Firefox. I have to run my selenium script so I searched more on Google that how I can launch my latest Firefox browser with Selenium script. I searched the solution on Google and came to know that Selenium does not launch the Firefox browser if its version is greater than 43.0. I was unable to find the reason why this problem is occurring after updating my Firefox browser. After updating the Firefox when I ran my script Firefox browser did not get launch. But recently I have updated my Firefox browser from 43 to latest 54.0. Solution: Earlier I was using the Firefox version 43.0 and I was able to launch the Firefox properly with my selenium script. Problem: I was unable to launch the latest Firefox browser 54.0 with Selenium 3
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