HP Deskjet 4155e won't connect to my wifi

[Skit10]

HP DESKJET 4155e won't connect to my wifi which is litterally sitting inches away from the router.

[Elohi_NR]

Hi @Skit10,

Welcome to the HP Support Community. 

I understand that you are facing connectivity issues. I’d like to help!

Make sure, your printer and your device are on the same network as 2.4GHZ only. 

Do you get an error message when trying to connect to the Wi-Fi?
Is it a private (Home network) or a public Wi-Fi connection? Wi-Fi direct? Or Hotspot?
What device are you using the printer with a Windows computer, Mac, Android, or iPhone?
 

Perform the following tasks in the order given. Use the printer after each task to see if the issue is resolved.

Restart devices

• Restart your computer or mobile device and the printer to clear any error states. If you are using a network printer, restart the router.
• If your printer connects to a Wi-Fi network, disconnect your computer or mobile device from the network name (SSID), and then reconnect it to the same network name your printer is connected to.
• If the printer is available and has a ready status, the issue is resolved. You do not need to continue troubleshooting.
• Press the power button to turn off the printer. If the printer does not turn off, disconnect the power cord from the printer and from the power source.
• Turn off the computer or mobile device that you are attempting to print from.
• If the printer was set up on a network wirelessly or with an Ethernet cable, restart the router.
• If necessary, reconnect the power cord to the printer and to a wall outlet, and then turn on the printer.
• NOTE:
• HP recommends plugging the printer directly into a wall outlet.
• Turn on the computer or mobile device.
• If the printer connects to a network, check the connection to make sure the same network is used by the printer and the device.
• Computer or mobile device: Open the list of available networks and make sure it is connected to the correct network.
• Printer: Check the Wireless light on the control panel. If it is solid blue, the printer is connected.

Click here for the remaining steps. 

Update the firmware: HP DeskJet 4155e All-in-One Printer Software and Driver Downloads | HP® Support

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.