Troubleshooting HP Printer Service Error 79

  • In some cases, an HP service error 79 may occur on your printer.
  • This is a service error that can indicate that a print job has become defective.
  • The occurrence of this error can also mean that your HP printer spooler may then fail to communicate with your machine.
  • In some circumstances, this problem may be caused by a hardware problem that cannot be solved by a layperson.

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There is a possibility that your printer may display the HP 79 service error on certain occasions. It is a service error that indicates an out-of-date firmware of your HP printer as well as a corrupt print job. It can also mean a corrupt print job. Your HP printer may not be able to communicate with your device if the spooler is out-of-date. 

You may experience HP service error 79 on your printer. The HP printer spooler may not communicate with your machine if the error occurs. It may be caused by a defect in a print job. The occurrence of this error can also be caused by a lack of firmware updates for your HP printer.

Your device may display the HP printer 79 error when a memory DIMM is installed. The error can be stopped by turning off the device, removing the memory DIMM, and installing it again after some time. Once the error has been fixed, you can try restarting your HP printer. Please follow the procedure below if the issue does not resolve itself.

HP service error 79 appears on the control panel of the printer for Laserjet Pro users in one of two ways.

This article examines the causes and fixes for HP printer error 79.

Causes of service error 79 on HP printers

Correcting the printer error : Unsupported protocol

  • Firmware failure: In some cases, this problem can occur if the firmware you have on your printer fails and refuses to accept new print jobs.
  • Printer Queue Failure: If the HP printer is connected to a Windows 10 computer, this error may be due to a printer queue failure.
  • Basic hardware problem: In some circumstances, this problem may be caused by a hardware problem that cannot be solved by a layperson.
  • Outdated printer firmware: It turns out that this problem can also occur if your printer is waiting to install an important firmware update before it can resume active print jobs.

How to resolve service error 79 on HP printers?



Updated: February 2024

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Following are the steps for clearing your printer’s print queue and power cycling your printer to resolve the HP 79 error.

Turn the printer off and then back on

79 is most likely a firmware error if it appears on your HP printer.

  1. Stop printing.
  2. 30 seconds is a good rule of thumb.
  3. The printer should be turned back on now.
  4. The printer must be initialized before using it.

Reinstall the drivers

  1. In the Windows search bar, type Control Panel and click on it.
  2. Select Uninstall a program and uninstall all HP printing software.
  3. The Device Manager can be accessed by right-clicking on Start.
  4. Make sure HP is uninstalled under Printer Queues.
  5. The driver will automatically be installed after you restart your computer.
  6. This problem may be resolved by reinstalling HP software.

Removing and reinstalling the DIMM module

  1. The printer should be turned off.
  2. The DIMM module should then be removed.
  3. To make sure the DIMM in the printer is correctly installed, reinstall it.
  4. Printing starts automatically when the printer is turned on.

Remove or replace the DIMM module

  1. Uninstall all modules of DIMMS that are installed
  2. The HP printer needs to be tested again.
  3. Your printer should support DIMM modules if your print results are correct.



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Frequently Asked Questions

  1. Locate the on/off switch on the bottom of the printer.
  2. Set the switch to Off and SOUTH on 10.
  3. Turn the printer back on and the system should work normally.

Service error 79 on HP printers means that the print job is corrupt or the printer firmware has not been updated. As a result, the spooler cannot communicate with the printer.

  1. With the printer on, unplug the power cord from the printer.
  2. Unplug the power cord from the power source.
  3. Wait 60 seconds.
  4. Reconnect the power cord to the power outlet and the printer. Note: HP recommends that you plug the printer directly into an outlet.

Due to the fact that the entire issue is displayed on the printer’s display screen, it is very easy to decode and fix text error codes. The error message you received regarding your printer sometimes provides you with clear instructions on how to fix the error without causing any inconvenience.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog, techquack.com, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.