Can you share us your log file?
Log file in ProjectName/Saved/Logs/ProjectName.txt
UE4 Editor crashing at 73% on startup every single time. Unrelated to projects, it happens trying to launch the editor, cant even make it to the project window. Also, launching straight into a project from the Epic client doesn’t work either. Also crashes at 73%. Anyone encounter this? It’s really frustrating and not the first time I’ve had it. Had to completely re install the engine last time which I don’t want to do consistently.