The Diablo 3 open Beta weekend is set to start in a few hours and some users still need help with some installation/downloading errors. For users getting the error “Failed to read a required file” , try this solution:
Make sure agent.exe isn’t running. You can right click on your task bar and hit “Start Task Manager” or just “Task Manager”. If you see agent.exe you’ll want to end that process and make sure the diablo beta launcher isn’t running
Enjoy playing in the Diablo 3 Open Weekend!