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Fix 79 Service Error Turn Off Then On HP Printer Issue on Mac or PC



Seeing an error can sometimes cause us to panic and worry that there is something wrong with our device. It can mean having to stop our current work or needing to have it repaired.

When you use your HP printer, there are sometimes problems that may occur such as the 79 Service Error. The issue may happen with either of the two error messages, “Error 79 turn off then on” and “Error 79 service error turn off then on.”

There are several reasons why you encounter either the “79 Error Turn off then on” or the “79 Service error Turn off then on” when printing documents. It can be an issue with your HP printer’s firmware. Another reason is a problem with your printer hardware itself. In some cases, there may be incompatible DIMM installed.

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Troubleshoot & Fix 79 Service Error Turn off Then On HP Printer Problem on Mac or PC

This issue is often experienced by users of HP LaserJet Pro and other popular HP printers when connected to a network or server on a Mac computer or Windows 10/11 PC.

Fortunately, several solutions will help you troubleshoot and resolve the service error 79 on your HP printer. Try to follow each of the methods below and check if it fixes the issue or not.

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Solution #1 – Turn your HP Printer Off Then On Again

As suggested in the error message, the first logical thing to do is reboot your HP printer.

  • First, power off your HP printer device.
  • Wait for at least 30 seconds.
  • Now, turn on the Power button and try again.

Solution #2 – Remove Any Surge Protector

Using a surge protector has a huge advantage when it comes to the inconsistent power supply. But, it can also be the reason behind the HP printer 79 error. You can bypass it by removing the surge protector. Now, plug your printer back to the outlet directly.

Solution #3 – Perform a Power Cycle on your HP Printer

  • Turn off your HP printer.
  • Unplug it from the power outlet.
  • Disconnect any cable plugged into it.
  • Wait for at least 1 minute.
  • Plug your printer back in the outlet without any USB cable.
  • Try to turn it on.

Solution #4 – Remove or Cancel Any Pending Printing Queue on your HP Printer


Open the printing option on your computer, and check if there are pending printing jobs in line. Cancel or remove these printing queues and try a test print again.

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Solution #5 – Reinstall your HP Printer Device Firmware or Driver

Windows 10/11 PC

  • On your Windows 10/11 PC, navigate to the Control Panel.
  • Go to Programs.
  • Select Programs and Features.
  • Select Uninstall a program.
  • Look for any HP-related software and uninstall it.
  • Navigate to the Device Manager.
  • Look for your HP Printer and uninstall it.
  • Restart your computer.
  • Now, try to reinstall your HP printer.

Mac Computer

  • On your MacBook or iMac computer, click the Apple icon.
  • Select the macOS System Preferences.
  • Go to Printers & Scanners.
  • Look for your HP Printer.
  • Click the Remove button.
  • Select Delete Printer.
  • Now, reinstall your HP printer.

Solution #6 – Update your HP Printer Driver

You can download and install the HP Smart App on your computer by following this guide.

  • Open the HP Smart App.
  • Select the name of your printer.
  • Go to Settings.
  • Choose Advanced Settings.
  • Select Tools.
  • Choose Printer Updates.
  • Now, download and install firmware updates.
  • Restart your HP Printer.

Solution #7 – Contact HP Customer Support

On your browser, go to https://www.hp.com/us-en/contact-hp/contact.html. You can report the service error 79 issue directly to the HP customer support team to help you fix the problem.

Did any of the solutions above work for you? Which one did the trick for you? We would love to know more. You can write us a comment below.



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