Unable to connect to Nucleus despite access to web interface (ref#TB1R6I)

Support Nucleus Support
1

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 see my Roon Server, but I still can't connect.

When you try to connect, what screen do you see?

· I see something else

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

· None of the above

Describe the issue

Unable to connect to Nucleus (rev B)

The nucleus seems to be operating but I keep on getting the message "waiting for Roon Server". I can access http://nucleus.local to restart, reinstall software.

Describe your network setup

Nucleus is connecting to Unifi Router (no switches in between) via LAN. It was working before the latest update to the current Version 1.0 (build 259) production

2

Screenshot 2025-02-24 at 21.07.40
Screenshot 2025-02-24 at 21.07.402386×1410 213 KB

3

What happens if you click „Select a different Roon Server“? It should ask if it’s ok to disconnect from the current one, say yes. Then it should show you the servers it can find, probably your usual one

1 Like
4

It does not ask me to disconnect from current one. It does not connect to my Nucleus (Rev B) but I can setup my MacBook as a Roon Server.

5

So what happens if you click the button? The only server that’s listed is the one on the MacBook?

6

Hey @Boriwat_Pinpradab,

Thanks for writing in, and welcome to the community!

Based on your screenshot, it looks like you’ve installed the early access version of Roon on your Nucleus, did you do this on purpose?

As a next step, I’d first get your Nucleus back on Production, since thats the current version of Roon on your Mac. Here’s more info on how to do this:

Let me know if you continue to have issues once you have Roon running on the same version across all your devices. Thank you! :+1:

7

@Benjamin - thank you for identifying the issue. I followed the instruction to downgrade the server.

Appreciate the support!