Unable to connect to Roon ARC despite router and modem configurations (ref#P63SGX)

[jrenejr]

Network Setup

· I use my ISP's router alongside a personal router.

ARC Status

· ARC is *Not Ready*

Roon Error Code

· None of these are listed. It simply says "TIMEDOUT" or similar.

System or third-party *firewalls *or *antivirus software* can sometimes block RoonServer from reaching ARC.

·
Try adding RoonServer and its associated processes to the whitelist of any firewalls or antivirus software you have installed, including the Windows system firewall, if applicable.
[You can learn more about firewall exceptions with Roon here.](https://help.roonlabs.com/portal/en/kb/articles/firewall)

Has the status in Roon -> Settings -> ARC changed after adding exceptions in your firewalls and antivirus software for Roon?
ARC is still *Not Ready*

Don't give up yet.

· I'm stuck. I'd like to create a post to ask Roon Community for help.

Describe the issue

I am having an issue connecting to Roon ARC. I have an Asus AX Router connected to an Xfinity Modem... I have activated UPnP and NAT, tried Port Forwarding, all to no avail...

Describe your network setup

My ISP is Comcast Xfinity cable modem/router combo. I connect my own Asus ZenWifi AX router through the Comcast. I am running Roon Server on a MacBook Pro 16 M1 Pro. I followed the troubleshooting prompts and turned off the firewalls in the router and Mac. Still no connection...

[jrenejr]

Here is the diagnostic data:

{
“ipv4_connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“68.aaa.bbb.ccc”,“actual_external_ipv6”:“null”,“router_external_ip”:“null”},
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“192.168.50.1”,“found_upnp”:true,“error”:“<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/\” s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/\“><s:Body><s:Fault>s:ClientUPnPError<UPnPError xmlns="urn:schemas-upnp-org:control-1-0">718ConflictInMappingEntry</s:Fault></s:Body></s:Envelope>”}
}

[connor]

Hi @jrenejr,

The diagnostic snippet you’ve shared indicates that other software is competing for the same port assigned dynamically to RoonServer by your router’s UPnP firmware.

First, try changing the port assignment in Roon → Settings → ARC to something else.

If that doesn’t work, I recommend circumventing port forwarding entirely by setting up Tailscale for RoonServer on the Mac instead:

Tailscale Setup Instructions: MacOS RoonServer