This is probably the weirdest issue out there on this community page. Long post.
TL;DR: Need to know what firewall rule to edit for Sonos Library service to work. Am too scared to yeet my own connection.
So, since about less than a week ago, I recently acquired (hint: sail the high seas) some Free Lossless Audio Codec files of the Call of Duty: Modern Warfare (2019) OST. Of course, I was interested in hearing the differences between the 320kbps MP3 and the 44.1kHz 16-bit FLAC files I had on my hard disk drive.
My laptop and all Sonos devices are connected via several Ethernet cables to the router via a 24-port network switch. It cannot be my router.
On my laptop, I first used the Sonos Win controller. I received this error code in the Windows Sonos controller.
“Saturday, May 15, 2021 - 1:44 PM Canberra, Melbourne, Sydney
Unable to play 'Into the Furnace' - unable to connect to 192.168.0.54:10246.”
That local IP address is my laptop (confirmed by accessing router’s device list).
Alright, let’s try Windows Media Player’s Cast to Device. That should work, right? Wrong.
I got this error.
Unexpected device error.
An unexpected device error occurred. Restart the device and try again.
If you can’t resolve the issue, a device update may be required. Please contact the device manufacturer for the latest updates.
HRESULT: 0xc00dc3b6
Alright, time to check Google.
The above device error corresponds to this: https://windows-hexerror.linestarve.com/0xC00DC3B6
DLNA_E_RENDERER_FAILED_TO_PLAY: The Media Renderer failed to play the content.%0
I restarted my Playbar unplugging the double-barrel power cord. Waited 1 minute, replugged in, white light was seen. Showed in Win and Android controllers.
Right, so let’s see if it’s a Sonos issue or my lappy. I copied those same FLAC files and dumped them in my phone’s SD-card. I played the same songs on the Playbar from the Android controller (On this Mobile Device) and what the fook, those songs played as intended. I heard the full song for confirmation. No error codes popped up.
Now, how do I fix this?
I checked this support article: https://support.sonos.com/s/article/688?language=en_US
Yeah, that looks right, it’s a firewall issue on Windows 10. No idea how to proceed from there.