HP Printer Error 79

How to Fix HP Printer Error 79 (Firmware/Software Error)?

HP printer Error 79 usually appears without warning and can instantly stop your printer from working. This error is commonly linked to firmware or software issues, but the good news is that it’s often fixable without replacing the printer. In this guide, we’ll explain what Error 79 means, why it happens, and the most effective ways to resolve it.

What Is HP Printer Error 79?

Error 79 is a firmware or software-related failure that causes the printer to freeze or reboot repeatedly. It typically occurs when the printer receives corrupted data or encounters a problem processing a print job. To prevent further damage, the printer shuts itself down and displays the error.

In simple terms, the printer’s internal software crashes and needs to be reset or repaired.

Common Causes of HP Error 79

Several issues can trigger this error, including:

  • Corrupted or incompatible print jobs
  • Outdated or faulty printer firmware
  • Network communication problems
  • Incompatible printer drivers
  • Third-party applications sending invalid data
  • Memory overload from complex print files

Identifying the cause helps prevent the error from returning.

How to Fix HP Printer Error 79

1. Power Reset the Printer

Start with a full reset:

  • Turn off the printer
  • Unplug the power cable from the printer and wall outlet
  • Wait 3–5 minutes
  • Plug it back in and turn the printer on

This clears temporary memory and resets the firmware environment.

2. Cancel All Print Jobs

A corrupted print job is one of the most common causes:

  • Turn off the printer
  • On your computer, open the print queue
  • Cancel or delete all pending print jobs
  • Restart your computer
  • Turn the printer back on

Try printing a simple test page to confirm the error is cleared.

3. Disconnect Network or USB Cables

To isolate the problem:

  • Turn off the printer
  • Disconnect Ethernet or USB cables
  • Power the printer back on without any connections

If the printer starts normally, the issue likely came from a network print job or connected device.

4. Update or Reinstall Printer Firmware

Outdated firmware can cause repeated Error 79 messages:

  • Visit HP’s official support site
  • Download the latest firmware for your printer model
  • Install the update carefully and do not interrupt the process

Firmware updates often fix known bugs and stability issues.

5. Update or Reinstall Printer Drivers

Driver conflicts can trigger software errors:

  • Uninstall the existing printer driver from your computer
  • Restart the system
  • Install the latest HP-recommended driver
  • Reconnect the printer and test again

Avoid generic or incompatible drivers whenever possible.

6. Check Third-Party Software

Applications such as accounting, design, or custom reporting software can send unsupported data:

  • Try printing from a different application
  • Print a basic document (like Notepad or Word)
  • If the error disappears, adjust or update the problematic software

When Error 79 Keeps Coming Back

If none of the above steps work, the issue may involve:

  • Faulty memory modules
  • Internal formatter board failure
  • Severe firmware corruption

At this point, contacting HP Printer Support or a professional printer technician is recommended, especially if the printer is under warranty.

How to Prevent HP Printer Error 79

To reduce the chances of future errors:

  • Keep firmware and drivers up to date
  • Avoid sending extremely large or complex print jobs
  • Use trusted applications for printing
  • Restart the printer periodically
  • Maintain a stable network connection

Preventive care helps keep your printer stable and error-free.

Final Thoughts

HP Printer Error 79 can be alarming, but it’s usually caused by fixable firmware or software issues rather than hardware failure. With proper resets, updates, and print job management, most users can resolve the problem quickly. If the error persists, professional support ensures a safe and permanent fix.