qBittorrent Slow Speed Checklist

Three distinct root causes found in practice when qBittorrent shows near-zero download speeds despite good internet connectivity.

Cause 1: Proxy Profile Enabled Without Real Proxy

qBittorrent proxy settings with a profile enabled but no valid proxy host configured will silently block all peer connections. No error is shown — downloads just stall at 0 KB/s.

Fix:

Tools → Options → Connection → Proxy Server
Set Type to None

Or edit qBittorrent.conf directly:

[Connection]
ProxyType=0

Cause 2: UPnP Not Working / Port Not Opened

If your router doesn't support UPnP or it's blocked, qBittorrent may not have a routable incoming port.

Fix:

Tools → Options → Connection
Set a static port (e.g., 50000)
Disable "Use UPnP / NAT-PMP port forwarding" (avoid relying on auto)
Forward that port manually at the router

Cause 3: Router Port Not Forwarded (TP-Link AX72)

On TP-Link AX72, port forwarding is not under "Virtual Server" — it's at:

Advanced → NAT Forwarding → Port Forwarding

Add a rule:

Service Name: qBittorrent
External Port: 50000
Internal IP: <LXC/container IP>
Internal Port: 50000
Protocol: TCP+UDP

Config File Shortcuts

[Connection]
ProxyType=0
PortRangeMin=50000

[Upload]
RateLimit=-1

Config location (Linux): ~/.config/qBittorrent/qBittorrent.conf

wiki/concepts/docker-bridge-subnet-whitelist — Docker containers appear as 172.x.x.x, not 192.168.x.x; WebUI auth bypass subnets must include Docker range

Sources

daily/2026-05-03.md — qBit showing 0 KB/s; root causes: proxy profile blocking + UPnP + missing TP-Link port forward; fixed by disabling proxy, setting static port 50000, forwarding at router

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