Nucleus One unreachable from MacBook Pro, accessible from iMac and Android app (ref#QL5E3B)

[D_van_Steenis]

Is Roon Server running?

· Yes, Roon Server is turned on and running.

What do you see on your screen?

· "Waiting for your Roon Server"

What happens if you press the "Select a different Roon Server" button?

· I don't see 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

· *Mesh networks*

You mentioned a mesh network in your setup. Certain common mesh networks might require slight reconfiguration to support Roon.

· None of the above

Describe the issue

Can't reach Nucleus One from Macbook Pro any more , but I can from iMac and Android remote app

Describe your network setup

Router Fritz!Box 7590LW, LAN ( ethernet cables for Nucleus One and iMac ) and WLAN (2,4 G ) with 3 mesh repeaters Fritz!

[vadim]

Hello @D_van_Steenis,

Thank you for reaching Roon support and welcome to our comunity!

macOS Sequoia (version 15), has tighter (and more obfuscated) network security settings than preceding MacOS versions.

Can you please navigate to macOS System Settings > Privacy & Security > Local Network, and make sure Roon is allowed.

If it is already enabled, toggle it off and on again. Then reboot your Mac, and see if the same issue persists.

[D_van_Steenis]

Hello Vadim: thanks for your quick support! It works again. I thought it had to do with my router or the firewall. But I was already affraid it had to do with the latest update of OS for the laptop. Strange enough this update caused no problem in reaching Nucleus One from the iMac. I also had to give permission to Qobuz on the LAN privacy settings ( otherwise Roon did stop because of to less data-flow ). I like Roon a lot! ( also because I have one sided eaheraingloss and MUSE gives me a good solution ). Perhaps you will hear again: after your advice and the Qobuz setting Roon stops for the third time now. I will see how this works in the present future, hope it will work… YS Dominique

[daniel]

Hi @D_van_Steenis,
Great — we’re glad our team was able to help you out! I’ll mark this thread as solved for you, but feel free to reach back out if anything changes.