Small configuration tweaks that apply regardless of platform. For installation itself, use the platform links above.
By default Lidarr opens a browser window to its UI when it starts. Three ways to turn that off — pick whichever fits your setup:
-nobrowser (Linux/macOS) or /nobrowser (Windows) to the Lidarr invocation. For systemd services, add the flag to the ExecStart= line in the unit file; for Windows services, edit the service command via sc config or directly in the registry. Docker containers never open a browser, so this flag is irrelevant there.config.xml in the AppData directory, and set <LaunchBrowser>False</LaunchBrowser>. Start Lidarr.Any of the three is sufficient; they do not need to be combined.