I was able to answer my own question, and here are the steps I took to resolve the issue:
- Select ‘About Your PC’ and look for the value for OS build (in my case, it was 17134.228)
- Go to https://developer.microsoft.com/en-us/microsoft-edge/tools/webdriver/ and locate the driver that matches the Win 10 OS Build (in my case, 17134), then download that version.
- On your machine running the tests, navigate to the configuration\resources\drivers\edgedriver folder where your Katalon Studio is installed. For safety, make a backup copy of the existing MicrosoftWebDriver.exe file.
- Copy the downloaded exe to this location, then re-run your tests with Edge
I assumed incorrectly that the version of MicrosoftWebDriver that came with the Katalon Studio 5.6.3 install was the latest version, but this was not the case. When I went through these steps and re-performed my tests, they worked as expected.