Looking for Roon Core:

[Todd_Druhot]

Core Machine (Operating system/System info/Roon build number)
Roon Nucleus

Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)

Arris Surfboard SBG10>Ethernet>Roon Nucleus

Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)

Roon Nucleus>USB>Lampizator Amber 3

Description Of Issue

I was listening to Roon/Tidal all morning. I left and went to the store and came back home music was not playing. I tried to open Roon on both my PC and my iPhone both just keep "Looking for your Roon Core.

[Rugby (aka Daniel or Big Dan)]

Try rebooting your Core. After that if you need to try rebooting the network.

[Todd_Druhot]

rebooting the network worked! The Nucleus is sort of new was running on an old Mac did not have this issue in past. Does this happen often with Nucleus!

Thanks Rugby for your help!