Principled BSDF

I am using 2.79 and it is in the shaders, it also shows up in the search.

As long as you're in Blender 2.79, you should be able to add a Principled shader from the add shader menu.

Thanks for your responses guys! The issue was being in Blender Render instead of Cycles Render. Once again thank you!

Thank you response! The issue was being in Blender Render instead of Cycles Render. Once again thank you!

Thank you response! The issue was being in Blender Render instead of Cycles Render. Once again thank you!