Unable to connect to Nucleus+ server

Roon Server Machine

AMD Ryzen 7 9700X 8-Core processor, 32 gb RAM, Windows 11 Pro build 26100.3775

Network cannot find my Roon+ server. Computer screen goes not farther than “waiting for your Roon server.”
Updated computer a month ago. External hard drive is connected to Roon+; this could not be found, but assigning it as R: drive solved that problem.
Everything working well until yesterday when I noticed ARC couldn’t connect to Nucleus+ in car. Phone cannot connect. Got home and same problem with computer.
I turned off and restarted Nucleus+ twice. On back of device, there is a solid green light and another green light is blinking.
I replaced the ethernet cord to the router and checked all connections.
No changes to network since June 2024.
Light on external hard drive is on; it is connected to back of Nucleus+. Network cannot find the drive (R:).
Norton’s not installed on computer (which is connected to network through WiFi and was not even in house when problem began). No other antivirus program or firewall.
What should I do?

Networking Gear & Setup Details

Not sure; standard router from Xfinity/Comcast. Nucleus+ connected via ethernet. Not using YPN.

Connected Audio Devices

None

Number of Tracks in Library

approx 120,000 tracks, including Tidal and Qobuz titles not on hard drive

Description of Issue

Hello,

Thank you for reaching out to Roon Support.

We’ve gone ahead and enabled diagnostics on your account, and based on the logs, it appears that your Nucleus+ is currently unable to obtain an IP address from your router.

Here’s what we’re seeing in the logs:

04/16 04:49:03 Trace: [realtime] fetching time from NTP server  
04/16 04:49:03 Warn: [orbit] init failed due to Invalid Type: 10, reiniting  
04/16 04:49:03 Trace: [ipaddresses] enumerating addresses  
04/16 04:49:03 Trace: [ipaddresses]    FOUND   lo 127.0.0.1  
04/16 04:49:03 Trace: [ipaddresses]    SKIPPED eth0: no ipv4  
04/16 04:49:03 Trace: [ipaddresses]    SKIPPED docker0: not up  

This suggests that the Nucleus+ is not receiving a valid IP address via Ethernet.

Could you kindly check your router’s web interface to see if the Nucleus+ is showing up in the list of connected devices? You may also want to try using a different port on your router if possible.

First try rebooting your router. Then, In your router try to clear DHCP cache. You can also try assigning a static IP address. You can clear the ARP cache to be certain there are no conflicts though this will clear upon rebooting the router.

I believe the MAC address of the Nucleus is printed on the bottom. You can review your router logs for this MAC address and see what is happening.

Hope this helps.

John

Vadim
Thanks for getting back to me so quickly.
This seems weird, but . . .
Suddenly today, I can again use the Nucleus+ to play music via WiFi from the attached hard drive.
However, if I open File Manager on my computer, I do not see Roon.
If I try to use ARC from my phone (no WiFi), I get a “poor connection” warning and no music.
Additionally, the R: drive that I had set up to be the external hard drive now only shows the few files I have on the Roon internal drive. (And yes, that makes no sense at all.)
I did try another port on the router, but same thing happened.

Hello @Michael_Cohen,

Thank you for the update.

Could you kindly clarify if the external hard drive is connected to your Nucleus+ via a wired USB connection?

The reason why you can’t see the network drive may be related to the IP address change, you can try to mount a new drive on your Windows PC

Also, what do you see under Roon → Settings → Storage? A screenshot of that section would be appreciated to help us better understand the setup.

Kind regards,
Vadim

Vadim

Thanks again for your continuing support.

The external hard drive is indeed attached to the Nucleus+ via a USB connection. As I noted earlier, this drive could not initially be found with a network search and I ascribed the drive letter R: to it. Both Nucleus+ internal and the external drives could be found, but now my computer finds only the internal drive. (The external drive obviously works as I’m able to access the music through Roon via WiFi but not through ARC.)

There have been no IP address changes to my knowledge.

Roon—>Settings–>Storage does not find the external hard drive. A screen shot is attached.

Hope this helps troubleshoot the problem.

Michael

Hey @Michael_Cohen,

Thanks for the update! Do you know what the Western Digital external drive is formatted to? If you safely stop Roon Server, and move your external drive over to your PC, are you able to access it normally?

For another simple troubleshooting step, have you tested using a different USB cable, as well as USB port?

Yes, when the problem was first noticed, One of the first things I tried was replacing the USB cord. It did not solve the problem.
Attaching the Western Digital hard drive to my computer via USB connection does allow me to access the drive.

Vadim
I’ve been giving you some wrong info.
I couldn’t understand why the Roon was playing music from the Nucleus+ attached external hard drive–it isn’t. The large number of available songs (on 1959 albums) are saved from Tidal and Qobuz. The only recognized hard drive (R:) is the Nucleus+ internal drive.

This would suggest that your USB drive is formatted with NTFS. And since your Nucleus can no longer see it when it is attached to the Nucleus, it is likely that the drive needs to be repaired using chkdsk.

Re-attach it to the Windows PC and have chkdsk /f N: run on the drive (where N is the drive letter that Windows gives to the drive), and then eject it safely using Windows (don’t just pull the USB cable or the power). Then when you reattach it to the Nucleus, you should see that your local files can be read again.

Great minds…
While awake in bed last night, it dawned on me that I had a similar problem a couple years ago and the fix disc command took care of it (at least for awhile). I did that upon awakening this morning before I checked my email and finding your suggestion–and yep, you were right. The hard drive now appears to be working properly.
Many thanks.

1 Like

Hi @Michael_Cohen,
That’s great news! I’m glad the Nucleus is working properly again. Are there any other issues you need help with?

You should try to figure out why your disc is becoming corrupt (ie errors preventing the disk from mounting). My experience is that when errors keep happening there is something nefarious going on in the background.

At the very least keep a good backup.

Hi @Michael_Cohen,
I agree with @John_Klimaszewski here — repeated errors are a strong indicator that something might be going wrong with the drive and that it could worsen over time. You might want to consider having a replacement drive on hand, just in case this one gives out.

Which worries me, because I had the same problem recur a good number of times with one (or was it two?) previous drives. I replaced the earlier drive less than a year ago with my current drive, which has not been dropped, jostled, or roughly handled.
The current drive is a Western Digital model, as I believe the previous one (or two) was/were.
It seems to me that if I’m having drive failure this often, something else may be going on. The drive, Nucleus+, and all other items (computers, printers, Echo, etc.) are on surge protectors. I’ve had no problem with anything but the external drives connected to the Nucleus+.
Your feeling about this?
Thanks.

Hi @Michael_Cohen ,

When you remove the drive from the Nucleus, do you ensure to turn the unit off before doing so? And then on the Windows PC, do you always use safely eject? I suspect that you are trying to disconnect the drive while something is trying to access it, causing the improper ejection.

Norris
Thanks for the reply.
I haven’t removed the drive from the Nucleus in months (I performed backup via wifi–it takes a long time, but it’s pretty much hassle-free). When I do remove the drive, I shut off the Nucleus with a short press. Once the Nucleus is off, the drive does not appear in Windows File Manager, so no, I don’t eject it. Once the Nucleus has shut down, and its lights and the hard drive light are off, then I’ll disconnect the drive, but again, I haven’t removed it in about 6 months.

Hi @Michael_Cohen,

Thanks for the info. Do you safely stop Roon Server from running proper to shutting the Nucleus off?

I assume I do. I never shut it off if any music is playing and it is not active in apps or on my desktop.

Hi @Michael_Cohen,

Thanks for the update! In the future, if you’re shutting your Nucleus down often, the safest way to do so would be from the webUI of your Nucleus - you can access it via Roon's Settings>Setup>Find Roon OS> and Click the IP address

This will open the webUI via your web browser (you can also just copy and paste your Nucleus IP into the web browser), to which you can then click the red power icon arrow in the upper right-hand corner > power off.

Screenshot 2025-04-24 at 12.44.16