Hi,
Thanks a lot for your advice!
My case was the latter, I went for the DebugGame Configuration to be able to debug my Online Subsystem Code.
I’m using Unreal Engine 5 and went to Platforms > Windows and set the “Binary Configuration” to “DebugGame”
Then instead of “Package project” (which would export the files to a folder of my choice), I chose “Cook Content”. After that, I closed the Editor and restarted the Debug Session in Visual Studio.
It now works like a charm!