· None of the above quite fits
· App interface looks or behaves oddly
· I've been offered an extended trial to try and get Roon working by Customer Services. The claim offer button on my account page doesn't work so I cannot claim the offer or start the subscription?
· I'm accessing my Roon account via a Win 11 pc and have tried 3 separate web browsers.
This thread is now a Personal Message (as we do with all account related questions) and we have flagged Roon’s @accounts team for you. I appreciate your patience until this request reaches their queue.
Hey @mark.3.phillips,
Sorry for the trouble!
I had a chance to get back to you over email today, as soon as we returned to work after the weekend. You should be all set 
Hi Rebeka, thank you. I’ve started the extended trial and installed Roon on my Linux NAS. All of the Roon ports are open not just port 55000 on the NAS and the firewall has a rule to all TCP on port 5500 through.
I can run android Roon over a Tailscale VPN and access the library when not connected to my local network but Roon ARC will not connect to it either with it without the Tailscale VPN. My router has multiple Roon ports forwarded as instructed. Disabling firewalls doesn’t seem to make any difference.
I am now at the same stage I was before with Roon ARC. When I check the remote connection option in Roon settings the image below shows there is no diagnostic info to send on?
I would be grateful for any help to resolve this.
Regards
Mark.
I suspect that you can either use port forwarding or Tailscale, but having both enabled might cause an issue.
Can you confirm that just using Tailscale doesn’t work either?
Note that when using Tailscale, you can ignore any diagnostic error messages in Roon’s 
> Roon ARC settings, since they don’t apply when using Tailscale.
Hi Geoff, thanks for the reply. Roon Arc fails using both. It didn’t work purely with port forwarding that’s why I tried Tailscale. The Roon android app works with Tailscale outside of the local network even with port forwarding still set but not Roon ARC?
I have Plex, Emby and Jellyfin working perfectly on the same NAS all accessible remotely but not Roon ARC.
Regards
Mark.
Hi Geoff, I have managed to get Roon ARC working on a different device, a tablet. Installed Roon ARC and Tailscale and while connected to a different network Roon ARC opened. I reinstalled Tailscale on my android phone and Roon ARC worked.
However, Roon ARC will only connect with a Tailscale VPN connected and not with just port forwarding active.
I can live with the Tailscale solution as long as it is consistent and Roon ARC doesn’t suddenly stop working like it has done before.
Many thanks
Mark.
Hi @mark.3.phillips,
Glad to hear Tailscale is working consistently for now!
To help diagnose why port forwarding isn’t working for ARC, could you share the following:
Screenshot of Settings → Roon ARC — the full diagnostic message shown there
Your network topology — how many routers do you have? Is there a modem/router combo from your ISP and then a separate router behind it?
The port forwarding rules you’ve set up — which ports, which protocol (TCP/UDP), and which local IP are they pointing to?
The local IP address of your NAS — you can find this in your router’s connected devices list
Your router’s WAN IP — go to your router’s admin page and check what IP is assigned to the WAN interface. Is it different from what you see, in
https://whatismyipaddress.com/
This will help us understand if there’s a double NAT situation or if the forwarding rules just need adjusting.
Thanks!
Hi Vadeem,
Thank you for your email and for taking time to look into my problem.
1. I’ve attached a screenshot of the Roon Arc Settings screen from the Roon client and from the Roon ARC client as requested.
2. My topology is that I have a Windows 11 AMD Ryzen 9 PC (192.168.0.63) connected to a 2.5Gb ethernet switch which my Linux Ugreen DXP2800-E32D NAS is also connected to. I have the official Roon server release software loaded on the NAS via a Docker container. The switch connects to a Deco X55 cellular router (192.168.0.1) using the Vodafone Network
3. I have attached a screenshot of the port details from the Docker container. In addition on my router I have port 55000 TCP open to 192.168.0.53 (NAS Server).
4. The local IP address of the NAS is 192.168.0.53.
5. The router’s WAN IP is 10.243.6.0 subnet 255.255.252.0 with a default gateway of 10.243.6.1. When I go to https://whatismyipaddress.com on my Win 11 PC it rerturns148.252.144.44 which is coming from Vodafone UK rather than 10.243.6.0.
I was sure there is a double NAT situation going on as when I first installed Roon Server the Roon Arc diagnostics pointed at that. However, since I recently reinstalled Roon server I see nothing in the Roon Arc diagnostics field in the app as per the screenshot. So the double NAT error has since disappeared. As I am using a data SIM card in my cellular 5G router I doubt Vodafone would contemplate issuing a static IP address to get around any double NAT issue.
Regards
Mark.
Hi Vadeem,
In addition to my earlier reply I have tried connecting both Win 11 PC and NAS direct to the router bypassing the switch and it makes no difference. I have also turned off firewalls on Win 11 PC and NAS and that makes no difference to Roon Arc connecting remotely either.
Regards
Mark.
Hi @mark.3.phillips,
Thanks for the update!
Interesting that it seems like you have a single router in your setup but are running multiple local subnets - is that correct? If you temporarily disable all but a single subnet, and reboot your devices to ensure everything falls onto the same subnet, do you see any sort of port forwarding error code in Roon Settings > Roon Arc?
All of this to say, if Tailscale is working consistently for you, you may not need to rely on port forwarding.
Thank you! 
Hi Benjamin.
I don’t have multiple subnets locally. There is only the 192.168.0 network given out by DHCP on the router.
Regards
Mark.
Hi @mark.3.phillips,
Thank you for sharing those details — this gives us a very clear picture.
The reason port forwarding will never work in your setup is that Vodafone is placing your connection behind CGNAT (Carrier-Grade NAT). Your router’s WAN IP is 10.243.6.x - this is a private address assigned by Vodafone, not a real public IP. Your actual public IP (148.252.144.44) is shared across many Vodafone customers and sits behind Vodafone’s own NAT layer, which you have no control over. No port forwarding configuration on your side can bypass this.
This is very common with mobile/5G data SIM connections, and as you suspected, Vodafone is extremely unlikely to assign a static public IP for a residential connection.
Tailscale is the correct long-term solution for your setup - it works precisely because it bypasses NAT entirely using relay servers. Since it’s already working consistently for you, I would recommend sticking with it.
Happy listening! 
Vadim,
Thanks for looking into this for me. I was pretty sure that was the reason but initially I couldn’t even get Roon ARC working with Tailscale either.
Reinstalling Tailscale on the Roon ARC devices seem to cure the previous problem even with the original Tailscale claim token on the NAS. What puzzles me now is that I do not see the double NAT errors in Roon ARC diagnostics now as I did originally so something else has changed making me think it isn’t just down to the Tailscale reinstall.
Now I can access my music library remotely with Roon ARC I’m further forward than before. Hopefully it will work consistently.
Thanks again.
Mark.
