All devices unable to play and volume bars flash off (ref#9RMSTQ)

Support
1

What best describes your playback issue?

· Music doesn't start when I press "Play"

What type of Zone is affected by this problem?

· *All of my Zones* are affected.

Does the issue affect all file formats?

· The issue affects *multiple/all* file formats.

Does the issue happen with local library music, streaming service music, or both?

· *Both streaming and local* *library* music are affected.

Do you encounter any playback errors with the "System Output" Zone?

· The System Output has the same problem as my other Zone.

Do you have a complex network setup?

· Both the device and RoonServer are connecting to a *single router*

Please try rebooting your router.

· No, I'm still having trouble

Do you have an approximate timestamp of when the issue last occurred?

· Jan 27 2026 9:15pm

What are the make and model of the affected audio device(s) and the connection type?

· Mac mini m2 Roon core, Nagra Streamer on main stereo, three other Roon end points using raspberry pi's.

Describe the issue

Hello, All of my devices no longer play. When I click on the volume icon, the volume bars flash on and off and the menu disappears. iPad, iPhone, Mac, Roon Core, all of it. I have restarted everything, including my streamer and router and modem.

No progress.

This happened suddenly with no change to my system. Please advise.

Describe your network setup

cable internet model to wifi router to Roon core and Roon endpoint through ethernet

2

Your screenshot shows all track within that playlist are unavailable.

Is this a playlist using Tidal &/or Qobuz?

Try logging out of whichever makes up that playlist, log back in. Does that remove the ‘unavailable’ in red writing?

3

Hello @Richard_Yoo,

Thanks for sharing the details.

Looking closely at your logs around the time of the incident (Jan 27, ~9:30 PM), we see a specific critical error: RAATServer client connection failed. Connection refused.

This means the Roon audio engine (RAATServer) running on your Mac mini has crashed or became corrupted, which explains why the interface is “ghosting” (flashing volume) and why the system thinks music is playing when it isn’t.

Before diving into complex router settings, please try this Soft Reset of the Audio Engine. This is usually the quickest fix for this specific error:

  1. Quit RoonServer on your Mac mini.
  2. Open Finder and navigate to your Roon database folder:
    • Press Command + Shift + G
    • Type ~/Library/RoonServer/ and hit Enter.
  3. Locate the folder named RAATServer.
  4. Rename this folder to RAATServer_old.
  5. Restart RoonServer. (Note: This will reset your Audio Device settings, so you will need to re-enable your Zones in Settings -> Audio, but your library and playlists will be safe).
If the issue persists immediately after this: Please check if you have any third-party security software (Little Snitch, Norton, McAfee, LuLu) running on the Mac mini. The logs indicate something might be blocking the local connection on port 9200. Please temporarily disable them or add an exception for Roon.

Let us know if this brings the audio back.

Thank you.

4

Hi @Richard_Yoo,

The symptom you’ve reported can occur if the Tidal/Qobuz/KKBOX session has become stale or the content you’re attempting to play isn’t actually being delivered via their API.

Does this problem happen if you play locally stored files?

Please simply restart your RoonServer and then sign out/back in of any streaming services within Roon (Settings → Services).

If this doesn’t help, then try deleting the cache:

  • Exit out of Roon/RoonServer (from the taskbar)
  • Find and open your Roon database
  • Navigate to /Library/RoonServer/Cache
  • Move the contents of the /Cache folder elsewhere, like your desktop
  • Try restarting Roon and verify if the issue still occurs

Please reach out if this doesn’t help. This thread will close automatically without any responses after a few days. Thank you!

5

This thread is shortly auto-closing due to inactivity. @Richard_Yoo, please reach out if you’re still having this issue with streaming tracks or have any other symptoms in Roon.