Adapt/print from:
If learners are using a browser other than Firefox, or OpenRefine does not automatically open for them when they click the .exe file, have them point their browser at http://127.0.0.1:3333/ or http://localhost:3333 to launch the program.
Mac users with the newest operating system will have to allow this to run by “allowing everything” to run. They can change the setting back after the exercise.