Connection to Imac High Sierra

I received my Vero 4K today. After 3 hours I only succeeded in connecting the vero 4K to the network (Internet box and Imac High Sierra).
Vero 4K refuses to connect to Imac to view the hard drives where the video is.
I go by:
“zeroconf browser”
“Christian’s Imac (samba)”
The answer is always “operation not permitted”.
Previously I had an apple tv 1 firecore which it connects without problems.
How to connect Vero 4K to Imac and video.
Thank you so much.
From France with google translation.


Have you read: File sharing with a NAS, media server, windows share or other device