I testing roon. When roon core is running on the pc under win10 then the apple-tv connected as network device. When roon core is running under os-x (in the same network) then the apple-tv is not connected. Any other client on the macbook see the apple-tv and can stream over airplay.
Roland
Hello,
now i have reboot all systems. I start roon an the macbook, coonect to core on the pc. Under settings i can see the apple-tv under network-device. I can not see any local device.
I select general and disconnect the core. Then i connect to the local core on the macbook. Now i can see the local devices but not the apple-tv???
I have checked the settings on apple-tv. “Require Device Verification” is turned off.
Roland
Hallo,
ok - one problem is solved. The firewall from os-x has blocked a connect to the local devices. After unblock roon in the firewall and restart roon, i can connect the local devices and use them.
Roland
Hi @Roland_Kunzke ----- Thank you for the feedback, my apologies for the slow response. I am glad to see from your most recent post that unblocking roon in the firewall is allowing you to connect to local devices 
(kudos).
Just to clarify so I understand, your apple tv is still not being seen by Roon or did adding the firewall exception rectify that issue?
-Eric
Hi Eric,
thanks - after reboot the macbook roon now also find and connect the Apple TV.
Request can closed.
Roland