Sorry fro the trouble here, @philip_vasseur! As suggested above, is there any change if you temporarily disable any firewall or antivirus running on the Core?
Is the HP connected directly to the router via Ethernet?
thanks guys, appreciate the responses. I had to uninstall Roon a number of times, and reset the VPN checklist each time, but it finally worked. So I’m up and running. Look forward to using Roon and sharing with new friends.
Best
phil