You don't need to worry about Windows compatibility or Java errors. If you have a web browser and an internet connection, you have access.
Detailed assembly instructions and step-by-step repair procedures are available for all systems, including engine, transmission, and chassis. Renault Dialogys Online
For complex repairs (e.g., replacing a high-voltage battery in a Megane E-Tech), Dialogys Online will overlay AR arrows onto the live camera feed of your smartphone/glasses. You don't need to worry about Windows compatibility