How to open my project in editor, without launch default editor first?

How to open my project in editor, without launching UE4Editor first?

Where is located MyProjectEditor.exe?

You can open the uproject file where ever your project folders are kept. This is usually in Documents/Unreal Projects/[YourProject] Folder.

Or you can use the Epic Games Launcher and the Library tab to open your project directly there without going through the default editor.

I dont have .uproject associates with UE4Editor.exe, but i found another obvious solution: append link to UE4Editor.exe with argument “FullPathToMyProject\MyProject.uproject”.