I've seen this problem many times, but I still can't find a solution to it.
When I bake the two objects, the normal map is completely blue.
Here are my steps:
- Select both meshes and click alt+g to clear the location
- Click the Normal node in the node editor
- Click the high-poly mesh (without the UV map)
- Shift click low-poly mesh (with the UV map)
- In the render-Bake settings, set bake type to normal, check selected to active and set the ray distance to 0.1
- Click Bake