Zbrush normal map issue

Zbrush sucks for get normals at my opinion, try another tool. You need lowpoly with UVs and hipoly. Maybe I dont know all tactics at Zbrush, but another tools more simple to get normals.

Try Xnormal

Hmmm I have problem now with Xnormal it's says "(file location) has no texture coords assigned! Please Export them!" lots of forums asked how can you solved this but I didn't find answer
I don't use textures both model

Your lowpoly mesh must has uv coords. Include uv when export your lowpoly obj file from original software.

Fine my Max is broken crash every time when I export to obj Arrrghhh

Try to merge mesh in new empty scene or may be last service pack for 3ds Max will fix it.

Thanks but I will today move to my PC in the computer shop I change for SSD so I have to reinstall all of my software because the vendor said it will faster if I rebuild it then if I clone it