Printer error 79

[LJD128]

After getting a new router at our office, my wireless M234sdwe shows an error (79). 

I figured out how to factory reset the printer. I tested copying and scanning and they worked. I printed a page from the i on the printer, and it set Wi-Fi direct: Disabled. I followed the instructions and was able to successfully enable it. 

However, when I hit the wireless button on the printer to turn it on, that is when the same error (79) comes back.

I had removed the printer off the computer and now I cannot add it back since the wireless function is not working. It comes up as available to add, but fails. 

1. I need to successfully add the printer back to my computer

2. I need to be able to print  and scan via wireless connection. 

Any help is appreciated. 

[A_Gayathri]

Hi @LJD128,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you are getting an error 79 on HP printers often indicates a firmware issue or a problem with the network connection. Here's a step-by-step guide to help you resolve the issue and reconnect your HP LaserJet MFP M234sdwe printer to your wireless network:

Step 1: Update Firmware Update the firmware on an HP printer

Ensure your printer's firmware is up to date, as outdated firmware can cause Error 79.

Download the latest firmware:

• Visit the HP Software and Driver Downloads.
• Enter your printer model (LaserJet MFP M234sdwe).
• Download the latest firmware update.

Install the firmware:

• Follow the on-screen instructions to install the firmware on your printer.

Step 2: Restart Printer and Router

Power cycling your devices can resolve many network-related issues.

Restart the printer:

• Turn off the printer.
• Unplug it from the power source.
• Wait for 60 seconds.
• Plug it back in and turn it on.

Restart the router:

• Turn off your router.
• Wait for 30 seconds.
• Turn it back on.

Step 3: Reconnect the Printer to Wi-Fi

Reconfigure the printer's wireless settings.

Factory reset the printer (if you haven't already done this recently):

• On the printer control panel, navigate to Setup > Service > Restore Defaults.

Reconnect to Wi-Fi:

• On the printer control panel, go to Setup > Network Setup > Wireless Settings > Wireless Setup Wizard.
• Follow the instructions to connect the printer to your Wi-Fi network.

Step 4: Add Printer to Computer

Ensure your computer is on the same network as the printer.

1. Add the printer:
   • Open Settings on your computer.
   • Go to Devices > Printers & scanners.
   • Click on Add a printer or scanner.
   • Select your HP LaserJet MFP M234sdwe from the list.
   • Follow the on-screen instructions to complete the setup.

Step 5: Enable Wi-Fi Direct

If needed, enable Wi-Fi Direct on your printer for direct printing.

1. Enable Wi-Fi Direct:
   • On the printer control panel, go to Setup > Network Setup > Wi-Fi Direct.
   • Follow the instructions to enable Wi-Fi Direct.

Step 6: Test Printing and Scanning

Ensure the printer can print and scan over the wireless network.

Test print:

• Open a document on your computer.
• Select Print and choose your HP LaserJet MFP M234sdwe printer.
• Verify that the print job completes successfully.

Test scan:

• Open the HP Smart app or any scanning software.
• Select your HP LaserJet MFP M234sdwe printer.
• Initiate a scan and verify it completes successfully.

Additional Tips:

• Ensure the printer and computer are within the range of the Wi-Fi router.
• Make sure no firewall or security software is blocking the printer's connection.
• If the problem persists, try connecting the printer via USB temporarily and perform the firmware update again.

Refer to this document:  HP LaserJet MFP M234sdwe Printer User manual 

HP LaserJet Pro - 79 Errors

I hope this helps. 

Take care and have a good day.

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