I am following this tutorial UE4 - Tutorial - Hologram Material! (Request!) - YouTube
When I get to this part around 14:30 I have all my values identical to his but the fresnel doesn’t glow off the sphere like his. What’s wrong?
have you tried messing with the lighting profiles in the previewer? This is a screenshot from the material instance editor, but this option is available all over the place now. You can mess with the bloom settings in there to try and achieve what you want.