Lighting Needs To Be Rebuilt

 

   Apparently this problem has been around for a while. Opening a new project, Unreal Editor may state that the lighting needs to be rebuilt in red text in the level viewport. Go to the Build Menu, if you want to change the lighting quality, then you can first select the quality by selecting the Lighting Quality from the Build Menu and then select a quality. Then to rebuild the lighting, from the Build Menu, select 'Build Lighting Only'. A progress window will pop-up and that's it.