Hp officejet 4636 - Impossible to connesct to home network

[Mimiesthinos]

Just changed home (and WiFi router), can't connect the printer to home network.

I tried guided procedure, WPS and converting the USB connection to a wireless one.

I always get "wrong password" (it's not) or "Unknown error".

I have a dual band router (2,4GHz and 5GHz), different SSIDs.

After printing the wireless test results i get "NOT PASSED" under Settings-->Protection.

Any ideas?

[TEJ1602 · Accepted solution]

@Mimiesthinos, Welcome to HP Support Community!

Check if you're able to connect other devices to the network with the same password.

To prepare your printer for a wireless connection, restart the printer, computer, and router.

1. Turn the printer off, and then wait 10 seconds.
2. Disconnect the printer power cord from the printer.
3. Turn off the computer or the device you are trying to print from.
4. Connect the printer power cord to the printer, and then turn on the printer.
5. Disconnect the power cord from your wireless router, and then wait 10 seconds.
6. Reconnect the power cord to the router. Wait until Internet service is restored. Internet service is interrupted while the router is off.
7. Turn on the computer.

Update the printer firmware

Download available firmware updates from the HP website

With the printer on and connected to the computer, go to HP Customer Support - Software and Driver Downloads, and then identify your printer. Look for and install any available firmware updates. Refer to the document HP Printers - Updating or Upgrading Printer Firmware

Refer to the document HP Printers - No Connection after Router or Wi-Fi Settings Change

If the issue persists, try changing the network password and see if that works. 

Keep me posted for further assistance.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

[Mimiesthinos]

updating the firmware worked.

Thank you very much!

[TEJ1602]

@Mimiesthinos

That's great! Happy to hear that.

Let me know if you need any further assistance.