Login failed: HTTP 403

[hdswiss]

http://192.168.178.51:8080

qBittorrent 5.2.0 — I can log in without any problems.

http://192.168.178.51:3000
qbitwebui v2.44.1 — I created an account and connected it to qBittorrent at http://192.168.178.51:8080, but the login fails with the error: HTTP 403 Forbidden.

[qbitwebui] 2026-05-22T10:55:58.145701000Z
[qbitwebui] 2026-05-22T10:55:58.147499000Z ___ ____ ___ _______ _______ ____ _ _ ___
[qbitwebui] 2026-05-22T10:55:58.152713000Z / _ | __ )_ | \ \ / / | __ )| | | | |
[qbitwebui] 2026-05-22T10:55:58.153208000Z | | | | _ | | | | \ \ /\ / /| | | _ | | | || |
[qbitwebui] 2026-05-22T10:55:58.153738000Z | || | |) | | | | \ V V / | || |) | || || |
[qbitwebui] 2026-05-22T10:55:58.154266000Z ___/| || _/_/ |_____|__/ _/||
[qbitwebui] 2026-05-22T10:55:58.154769000Z
[qbitwebui] 2026-05-22T10:55:58.155231000Z [2026-05-22T10:55:58.144Z] [INFO] Server running on port 3000 (production)
[qbitwebui] 2026-05-22T10:55:58.155662000Z [2026-05-22T10:55:58.147Z] [INFO] [CrossSeed Scheduler] Starting scheduler...
[qbitwebui] 2026-05-22T10:55:58.156109000Z [2026-05-22T10:55:58.149Z] [INFO] [CrossSeed Scheduler] Loaded 0 enabled instance(s)
[qbitwebui] 2026-05-22T10:55:58.156590000Z [2026-05-22T10:55:58.150Z] [INFO] [Stats Recorder] Starting stats recorder (5 min interval)
[qbitwebui] 2026-05-22T10:55:58.294033000Z Started server: http://localhost:3000
[qbitwebui] 2026-05-22T10:59:02.935543000Z [2026-05-22T10:59:02.934Z] [ERROR] qBittorrent proxy failed for instance 1: Login failed: HTTP 403
[qbitwebui] 2026-05-22T10:59:02.938700000Z [2026-05-22T10:59:02.935Z] [ERROR] qBittorrent proxy failed for instance 1: Login failed: HTTP 403
[qbitwebui] 2026-05-22T10:59:02.939639000Z [2026-05-22T10:59:02.935Z] [ERROR] qBittorrent proxy failed for instance 1: Login failed: HTTP 403
[qbitwebui] 2026-05-22T10:59:02.940446000Z [2026-05-22T10:59:02.936Z] [ERROR] qBittorrent proxy failed for instance 1: Login failed: HTTP 403
[qbitwebui] 2026-05-22T10:59:02.941236000Z [2026-05-22T10:59:02.937Z] [ERROR] qBittorrent proxy failed for instance 1: Login failed: HTTP 403

docker-compose.yml

services:
qbittorrent:
image: linuxserver/qbittorrent:latest
container_name: qbittorrent
environment:
- PUID=1000
- PGID=1000
- TZ=Europe/Zuerich
- WEBUI_PORT=8080
volumes:
- ./qbittorrent-config:/config
- /mnt/dietpi_userdata/downloads:/downloads
ports:
- "8080:8080" # qBittorrent WebUI
- "6881:6881" # BitTorrent TCP
- "6881:6881/udp" # BitTorrent UDP
- "9876:9876" # Network Agent
restart: unless-stopped
net-agent:
image: ghcr.io/mkbula/qbitwebui-agent:latest
container_name: net-agent
network_mode: "service:qbittorrent"
environment:
- QBT_URL=http://localhost:8080
depends_on:
- qbittorrent
restart: unless-stopped
qbitwebui:
image: ghcr.io/mkbula/qbitwebui:latest
container_name: qbitwebui
ports:
- "3000:3000"
environment:
- ENCRYPTION_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
- DOWNLOADS_PATH=/downloads
depends_on:
- qbittorrent
restart: unless-stopped
volumes:
- ./qbitwebui-data:/data
- /mnt/dietpi_userdata/downloads:/downloads:ro