Epic Games Installation Error | Error IS-MF01 | Rocket League (100% Working Fix) In this tutorial you will learn how to resolve the Error IS-MF01 which for most people occurs when trying to download a game such as rocket league and fortnite In this video, I'll be showing you how to fix the error called the Error IS-MF01 in the epic games launcher installation process To fix the Error IS-MF01 installation error ill be demonstrating 1 way to fix it in this video Subscribe: https://bit.ly/2HMiy6V This troubleshooting guide will work on Windows 10, windows 7, windows 8, operating systems and desktops, laptops, tables and computers