Why is my HP Photosmart 7520 not connecting to WiFi?
Restart the computer, printer, and router. Manually connect the printer to your network. Reset the print system. Uninstall and reinstall the HP software.
What does invalid WPA passphrase mean?
The error displays after entering the WPA or WPA2 wireless security passphrase for your printer. If the error displays when a correct passphrase is entered, then the printer firmware might not be compatible with the PMF technology and a firmware updated is needed.