Printer not recognizing Wi-Fi and password is correct

[JanieS630]

I have a new router/modem and HP printer Model D110a is recognizing the router but not the password which is correct.   Receiving the error “Connection error” Invalid WPA Passphrase.    Router comes with a password which contains “dashes”.   What can be done to correct this issue.

[Pallipurath · Accepted solution]

Hi @JanieS630,

Welcome to the HP Support Community.

Thank you for posting your query.

I am sorry to hear that issue with older HP printers like the D110a when connecting to newer routers. The error “Invalid WPA Passphrase” usually isn’t about the password being wrong it’s about compatibility with the way the router encodes the password.

Wi-Fi Password

• The D110a often fails with special characters (like dashes, spaces, or symbols) in WPA/WPA2 passwords.
• Log into your router’s admin page and temporarily set a simpler password (letters + numbers only, no dashes).
• Test the printer again.

Check Wi-Fi Security Mode

• The D110a supports WPA/WPA2 Personal (AES) but may reject newer WPA3 or mixed WPA2/WPA3 modes.
• In your router settings, set Wi-Fi security to WPA2-Personal (AES only).
• Avoid WPA3-only mode.

Use 2.4 GHz

• The D110a only supports 2.4 GHz Wi-Fi.
• Ensure your router broadcasts a 2.4 GHz SSID.
• If your router combines 2.4 GHz and 5 GHz under one SSID, split them into separate names and connect the printer to the 2.4 GHz one.

Manual Network Setup

• On the printer’s control panel: Setup → Wireless → Wireless Setup Wizard.
• Enter the SSID and password manually.
• If the password has dashes, try replacing them with underscores or removing them temporarily.

Firmware Update

• Check HP’s support site for the latest firmware for the D110a.
• Updating firmware can improve compatibility with newer routers.

Take care and have an amazing day!

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Regards

Pallipurath.