Unable to connect new Nucleus One via Roon app (ref#PFYADW)

[George_Spink]

Is Roon Server running?

· Yes, Roon Server is turned on and running.

What do you see on your screen?

· "Looking for your Roon Server"

Please try to restart your Roon Server by closing the Roon app in the taskbar or rebooting your Roon Server machine.

· No, the issue remains the same

Please try to restart your network setup by unplugging, waiting 30 seconds and then replugging in your networking gear.

· No, the issue remains the same

Please select how you've connected your Roon Server to the internet

· Roon Server is connected by *Ethernet*

Have you checked your firewall settings to ensure that Roon is allowed through?

· Roon still won't connect even after checking this aspect

Have you verified that Roon Server is on the same subnet as your Remotes?

· My Remotes and Server are on the same subnet and I still can't connect

Sometimes the issues can be resolved with a reinstall of your Roon Remote app. Let's try to perform a reinstall and see if it helps.

· I've reinstalled the Roon Remote but it did not help

What is the operating system of your Roon Server host machine?

· *Nucleus*

Select any of the following components that are present in your local network setup

· *Antivirus* *software *installed on RoonServer _or _Roon Remotes

You mentioned antivirus software. Please select the specific Antivirus you have from the list below

· None of the above

Describe the issue

I just connected a new nucleus one as a replacement for a defective Roon Rock. When I try to connect to the nucleus one via my Roon app on my Mac mini it is never found. The following content was pulled from my Mac mini via the terminal app; nucleusone.lan (192.168.12.200) at (incomplete) on en0 ifscope [ethernet].

Describe your network setup

The nucleus one is connected to a gig switch via ethernet. All switches have been reset. I'm using T-Mobile as my internet provider. Every Roon end point is connected via Ethernet. My network has not changed in 3years. The Roon Rock worked fine until the fan failed and the unit overheated.

[connor]

Hi @George_Spink,

The Nucleus One hasn’t yet reached out diagnostic servers, suggesting that it might be isolated completely by an active security feature in this network. You mentioned antivirus software in your post above - have you ensured that RoonServer is added an exception in any security software?

Please share a screenshot of the Nucleus Web Administration page for the new unit here.

Also, please ensure that your MacOS instance (if it’s 15.0 or above) has granted local network access to Roon. You’ll need to open the MacOS System Settings and navigate to Privacy & Security → Local Network to toggle Roon’s access on/off.

We’ll watch for your response. Thank you!

[George_Spink]

Upon further investigation I discovered that my external SSD attached to the Nucleus One was causing the problem (not the network or security software). Once I replaced the SSD all is well.