Hi @Mark_Sealey,
Thanks for the updates and additional information! A few thoughts on what you’ve shared so far:
There are two overlapping problems:
- A hung/zombie backup process on the Titan. The "Another backup has already started" error means Roon OS still thinks a backup job is running, likely a ghost from a previous failed attempt. Neither IP address will work until this lock is cleared. The only thing that clears it right now is the full power-pull reset.
- The multiple RoonServer entries in macOS Local Network privacy. These are almost certainly leftover permission entries from previous Roon installations or updates. They're not causing the hung backup directly, but they can cause the Mac-side "Waiting for server" connection issues after a Titan restart.
For the multiple RoonServer Local Network entries: These are harmless duplicates but worth cleaning up. The simplest approach is just to leave only one enabled and leave the rest off. Vadim’s toggle-off/toggle-on advice was right; the key thing is making sure at least one “RoonServer” and “Roon” entry is on.
Have you tried clicking the purple IP address? That should open the webUI for you.
The most important part - we’ll need to review a fresh set of Roon Server logs from your Nucleus. Could you please bring the machine back online if possible, it should auto-enable diagnostic mode and get us what we need.
Thank you, Mark! ![]()

