Universal Media Server | Forum

OK I think because it was sending 2 different User-Agent headers only the first one received was being matched but that one is very generic so did not try to use it before.

User-Agent: Linux/4.4.120+, UPnP/1.0, Portable SDK for UPnP devices/17.2.0
User-Agent: Dalvik/2.1.0 (Linux; U; Android 7.1 ...

You would be better off using a VLC conf instead of the Firestick one. I did not know that the VLC app ran on it.
If the capabilities of that Firestick is the same as desktop VLC then it should work once you change the UserAgentSearch

Maybe this one will work better.
Firestick-4K-VLC.conf
If that ...

Tried the revised configuration file and same issue.

As VLC natively supports all of these file formats, I disabled all transcoding in UMS and now everything works as before, Suspect this will screw up any devices on the local area network that need certain file formats transcoded, but I will deal ...

Thanks @mik_s

Tried your suggestion and the configuration file is not picked up, even added 'Device = 192.168.0.5'.


Firestick-4k.conf ums_dbg_2026-03-22-10-52.zip


If I use the default Amazon profile for unknown renderers (i.e. when detection fails) in 'Settings' then the folders in VLC show ...

Recent change and cannot say with which version of UMS. I have a Firestick 4k connected to my TV with a fixed IP address using VLC. VLC is now showing empty folders in the UMS directories and seems files like *.mkv are no longer supported, while *.mp4 are. UMS Status tab is showing 'Unknown renderer ...

mik_s wrote: ↑Thu Dec 15, 2022 10:18 am Just seen this issue in GitHub and I was having the same problem when I tried it earlier.

I used the "Edit UMS configuration file manually" option in the java GUI to set 'web_gui_on_start = false' to change it.

Thanks for the solution, much appreciated.

Fusion131 wrote: ↑Thu Dec 15, 2022 1:21 am I'm getting same error in Firefox
UMS Save_Error.pngmessage.

Same in Edge, so not a browser issue.

Trying to disable automatic start up of the web GUI and getting error as per attached when un-ticking the option and trying to save the change in Chrome (latest version).

Is there any other way to disable it?

Recent clean install of whole system with Windows 11 and UMS in December. Happened twice since then, and as mentioned several times with Windows 10 before. Thankfully not an everyday occurrence.

Thanks for looking into this.

Thanks, debug log attached if it helps. I removed the shared folders, set it to trace and restarted UMS (deleted previous log). Absolutely no other issues with UMS.

Could be the Antivirus (Bitdefender), but would then expect it to happen more frequently, or at least when updating UMS. Just happens ...