UPnP Initialisation Error -203 UPNP_E_SOCKET_BIND

Thanks for the quick answer ! I disconnected my other macbook but still the same problem. In audirvana Audio output, i don’t have any other choice …

Hello,
Any answer for that problem.
Same RED Explanation mark, on both service : Wifi + Ethernet
How to find the other service thaht use Upnp on OS X ?
Thank you

Has anyone found a solution to the problem of ,Error initializing UPnP stack’? It’s totally annoying as it makes AS unusable for weeks on my Mac Mini 2018 running macOS Ventura 13.2.1

Hi @Sailor,

Can you please try to put this command line un Terminal?

lsof -i 4udp:1900 -sTCP:LISTEN

That’s what I’m getting

Screenshot 2023-03-03 at 10.03.23

Ok, and you still have the error you mentioned above?

All OK now! Amazing!!! You have to post this somewhere as a solution!

Well done, Antoine!

After switching off my MacMini over night, I turned it on again this morning, and, again, sadly, the same error popped up:

Error initializing UPnP stack, error: -203 UPNP_E_SOCKET_BIND

Re-ran the lsof -i 4udp:1900 -sTCP:LISTEN command in terminal, but no success this time: same problem of not connecting to my UPnP devoce.

In addition, every time I switch off my computer and re-start AS, I need to install the SysOptimizer.

It’s getting annoying …

I have the same issue

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for those who have the same problem: check your login items (MacOS settings).
most likely you have an app running that already uses the UPnP Port.
for me it was EyeConnect. Disable everything suspicious and reboot.

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