Download IEDriverServer.exe from here http://selenium-release.storage.googleapis.com/index.html
Install Microsoft IE WebDriver Tool for Internet Explorer 11 http://www.microsoft.com/en-us/download/details.aspx?id=44069
Follow all the advice from this page (summary below) https://code.google.com/p/selenium/wiki/InternetExplorerDriver
- Internet Options > Security > Select a zone to view or change security settings.