Connect to this PC

On your Windows Desktop HUB app: tray icon → Mobile Hub pairing QR…, then scan the code with this phone. Or open the pairing link from the desktop. No typing needed when the QR works.

If you are testing on the same device, use Connect below with http://127.0.0.1:4190 (HTTP port from desktop settings).

Desktop HUB Companion

Auto-discovering local Desktop HUB…

HTTP on your LAN is usually easiest. HTTPS to a raw IP may show a certificate warning unless you install the desktop trust root.