The setup app or driver can't discover the printer on your network. Most wireless-setup failures come from band mismatch (2.4GHz vs 5GHz), network isolation, or the printer not being in setup mode.
Work through these in order; most people are fixed by the first two or three.
Most printers only join 2.4GHz Wi-Fi. During setup, connect your phone/PC to the 2.4GHz network too. On a single-name (band-steering) router, temporarily seperate the bands if needed.
Use the printer's Wi-Fi Setup Wizard, or hold the Wi-Fi button until it flashes, so it broadcasts for setup. Keep the printer close to the router during pairing.
Guest/public networks isolate devices. Join both printer and computer to your main home network.
A VPN or strict firewall can hide the printer during discovery — turn it off just for setup.
Browse step-by-step setup guides, error-code fixes and driver help for every major brand sold across the USA & Canada.