Chris wrote:
Good news — you don't need to touch the .env file at all. qBittorrent works differently from Sonarr/Radarr/Prowlarr: it doesn't use an API key, it authenticates with a WebUI username/password, and SparkBox keeps that password in sync with Sonarr/Radarr automatically. The right way to rotate it is: sudo sparkbox reset-password qbit — that generates a fresh password, restarts qBittorrent with it, and automatically re-points Sonarr/Radarr/Prowlarr at the new one for you (no manual file editing needed). If you already changed the password by hand inside qBittorrent's own UI instead, run sudo sparkbox arr-bootstrap afterward to force the re-sync. Let us know if anything still shows auth errors after that.