Join GitHub today
GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together.Sign up
Firefox 47 - Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. #2110
OS: Windows 7
Selenium Version: 2.52.0
Browser Version: 47.0b5
Expected Behavior -
Open Browser -> Maximize Window -> Go to Website
Actual Behavior -
Open Bwoeser -> Exception Message='Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms.
Additional Information -
Running NUnit Tests using Selenium Grid. Issue cannot reproduce with Firefox 46 or previous versions.
You will need to use the new Firefox driver from version 47 onwards. See https://developer.mozilla.org/en-US/docs/Mozilla/QA/Marionette/WebDriver for details.
referenced this issue
Jun 3, 2016
I'm using the Fx 47 build that will most likely be declared today as the official one (from here: https://ftp.mozilla.org/pub/firefox/releases/47.0/ ) - and still experiencing the issue here, so it seems the addon signing hasn't been pushed to 48...
We appear to be ticking something in the JSRuntime https://gist.github.com/AutomatedTester/8c011e194e6343b6d9bfbda80af76402
The issue is that code to support cert override was changed in a way that broke Selenium which in turn then crashed Firefox. There is a fix in the works from Mozilla.
As a work around you can either revert to Firefox 46 or you can use Marionette*. We have documented how to get set up with Marionette on MDN.