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DLNA not working – DLNA Devices discovered but playback not working (Internal Server Error 500) #7338
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Reference: starred/jellyfin#7338
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Originally created by @DrAxelbauer on GitHub (Sep 22, 2025).
Description of the bug
I tried to play music via DLNA to my DLNA device. The Device is found by jellyfin but immediately after i change the playback device to the DLNA device the playback stops and an "Internal Server Error 500" (See the logs).
I am a little bit off, because I do not know where to start to pin down the problem.
My setup:
My network is seperated into different Vlan networks and i setup smcroute on my router, so that that Jellyfin can find the DLNA device from the other Vlan.
With tcpdump the 1900 UDP packages arrive and Jellyfin finds the DLNA Device.
My problem is, that i do not know, if Jellyfin is the problem or maybe some setup on the router (firewall rules for tcp, smcroute, ttl etc.)
Background info:
Vlan 1: My lxd container server (host). Jellyfin lives within a lxd container. So had to use smcroute also on the lxd host and setup routes that the UDP packages are handed over between the lxd bridge (lxdbr0) and the eno0 interface.
Vlan 2: IoT Wlan where my DLNA Device is.
Any hints where to start searching?
Besides: tcpdump works fine from the DLNA Device to the Jellyfin container. I can see those packages coming in.
Reproduction steps
Start playback
Change playback device to DLNA Device
Playback stops immediately
What is the current bug behavior?
Playback stops and there is no playback.
Erro 500 occurs in the logs.
What is the expected correct behavior?
DLNA Playback starts on the DLNA device.
Jellyfin Server version
10.10.0+
Specify commit id
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Specify unstable release number
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Specify version number
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Specify the build version
10.10.7
Environment
Jellyfin logs
FFmpeg logs
Client / Browser logs
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Relevant screenshots or videos
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Additional information
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@DrAxelbauer commented on GitHub (Sep 23, 2025):
I just found out, that controlling the volume works:
@DrAxelbauer commented on GitHub (Sep 23, 2025):
Okay I just needed to put my servers host address under:
Networking --> Firewall & Proxy Seetings:
all=http://MYSERVERIP:8096