premise: I already read all the posts I could regarding this topic and I didn't find any solution.
I'm literally going mad after spending many hours in trouble shooting.
what I tried:
-reloaded the router
-reloaded the receiver
-updated the receiver to v1.28 officially described as "Support new APIs for Spotify" from Yamaha here
-re-installed spotify app on 1) Windows10 2) Android 3) iPhone
-always used google DNS 220.127.116.11 and 18.104.22.168 until January when it stopped to work
-tried OpenDNS DNSs and my ISP DNSs
-made some captures with wireshark also by setting my laptop as receiver's default gateway and found nothing special, it makes some mDNS standard reply calls (I think for airplay) and some standard DNS query to esdk-ffl.spotify.com
-I didn't change neither ISP nor the router
-I have a good enough fiber optic line
-other users over Spotify community say it works after the receiver update
-all the devices find each other: chromecast, W10, iPhone, Android...tried to have online every combination of these
-the receiver can easily hear netradio
the point is:
what is changed in the Spotify connect service graph? how does it work? do someone know which protocols are involved?
Solved! Go to Solution.
Thanks for your tests but nothing worked for me and sorry for late reply.
In the end I changed router with one that supports UPnP (it took a lot of time to arrange this with my ISP), now it's all stable and working fine.
I didn't try to disable UPnP and check if it works or not.