Jellyfin media player doesn't play anything but works on the browser and Windows

[TheDreadPirate]

On the Arch client, click on your icon in the top right and then click on Client Settings.  IIRC there are some settings about halfway down about how it handles playback (I don't have JMP in front of me to give you the exact names).  Try changing some of these options.

Same problem here. Nothing works. Where are the logs ?

It is not the first time I have encountered this issue, I've had it in the past, and had a lot of trouble with it. Somehow managed to fix it, but only God knows now, I've forgotten; now it's broken again and I'm clueless.

What OS for your client?

Windows - C:\Users\yourUser\appdata\local\JellyfinMediaPlayer\logs
Linux - ~/.local/share/jellyfinmediaplayer/logs/