Roon arc not working

[Suedkiez (Just a fellow user like you)]

@K.J_Redert

ConflictInMappingEntry

This is your error. Not the same as MultipleNatFound in the OP of this topic. Not every “ARC not working” is the same issue.

ConflictInMappingEntry may indicate that you have this:

Roon ARC port forwarding issue

This is the error after you turned off antivirus. The ConflictInMappingEntry looks like you might have conflicting port forward rules, or you have duplicated IP addresses on the LAN Maybe you have UPnP enabled AND set up manual port forwarding rules for the same ports. In this case, either use UPnP and delete the manual rules, or use a manual rule and disable UPnP on the router. It may also be caused by forwarding ports 50000-50002 - as mentioned, you only need to forward one port, the one th…

Or possibly this (in this case: Do you have two routers / an separate internet modem in addition to a router?)

Roon ARC port forwarding issue

Ah, I missed that. I was going by “My Networking hardware is the ASUS RT-AX82U WiFi 6” and overlooked the later mention of the ISP router. OK, the principles of what I wrote remain correct, though, but you need two rules, I think: Set up port forwarding on the ISP router. I guess you will need to do it manually. – The ISP router is the external interface and it must be able to forward from the external IP & port to the internal network, this being represented by the Asus – Make sure that t…

It would be better not to pollute @Samuel_Coor’s topic with an unrelated issue. If you open a new topic in ARC: Port Forwarding Help, tag me with @Suedkiez and I’ll be happy to try and help