Can the Epic Games Launcher be used with Go Offline & No Internet connection?

Windows 7 Pro.
Hangs with “Please Wait”. Never an error or start.
I thought I could with previous versions.

UE4 can work without laucher, but UE4 waits for some life signal from laucher so you need to wait. if it really annoying try to rename laucher exe file, editor wont find it and should just run editor