I found where to get password to web-ui in modern qbittorrent-nox.
The answer is in official wiki page titled
“Web UI password locked on qBittorrent NO X (qbittorrent nox)”
root in 🌐 N150-NAS in ~
❯ systemctl status qbittorrent.service
● qbittorrent.service - qBittorrent (DietPi)
Loaded: loaded (/etc/system
d/system/qbittorrent.service; disabled; preset: enabled)
Active: active (running) since Sun 2025-08-24 14:07:27 UTC; 15s ago
Invocation: 88402f67c86b4b3385add47e06d3cf9e
Docs: man:qbittorrent-nox(1)
Main PID: 2967535 (qbittorrent-nox)
Tasks: 10 (limit: 8895)
Memory: 7.8M (peak: 8.5M)
CPU: 163ms
CGroup: /system.slice/qbittorrent.service
└─2967535 /usr/bin/qbittorrent-nox
Aug 24 14:07:27 N150-NAS systemd[1]: Started qbittorrent.service - qBittorrent (DietPi).
Aug 24 14:07:27 N150-NAS qbittorrent-nox[2967535]: WebUI will be started shortly after inte
rnal preparations. Please wait...
Aug 24 14:07:27 N150-NAS qbittorrent-nox[2967535]: ******** Information ********
Aug 24 14:07:27 N150-NAS qbittorrent-nox[2967535]: To control qBittorrent, access the WebUI
at: http://localhost:1340
Aug 24 14:07:27 N150-NAS qbittorrent-nox[2967535]: The WebUI administrator username is: qbi
ttorrent
Aug 24 14:07:27 N150-NAS qbittorrent-nox[2967535]: The WebUI administrator password was not
set. A temporary password is provided for this session: kJDdQxgzV
Aug 24 14:07:27 N150-NAS qbittorrent-nox[2967535]: You should set your own password in prog
ram preferences.
the temporary password is in the journald/journalctl log.
