# 1-866-203-7571 How to Fix 79 Service Error HP Printer?
**HP Printer Support at 1-866-203-7571**
HP printers are known for reliability, but like any advanced device, they can occasionally display error codes that stop printing completely. One such issue is the **“79 Service Error”**, which can be frustrating—especially in offices where printing is critical.
If your HP printer suddenly shows **79 Service Error** and refuses to work, don’t panic. This guide explains what the error means, why it happens, and how to fix it step by step.
For immediate assistance, you can also contact **HP Printer Support at 1-866-203-7571**.
## What Is HP Printer 79 Service Error?
The **79 Service Error** is a firmware or communication-related problem that usually appears on HP LaserJet and Enterprise printers. It typically means the printer encountered a serious internal issue and must be restarted.
You’ll usually see messages like:
* *79 Service Error Turn Off Then On*
* *79 Error – Printer Needs Restart*
* *79 Service Error*
This error often prevents the printer from functioning at all.
**HP Printer Support at 1-866-203-7571**
## Common Causes of HP 79 Service Error
Understanding the cause helps you fix it faster. The most common reasons include:
1. **Corrupt Print Job**
A damaged or incompatible file sent to the printer can crash the firmware.
2. **Faulty Network Connection**
Network communication issues can trigger the error.
3. **Firmware Bugs**
Outdated or corrupted printer firmware may cause the printer to fail.
4. **Driver Conflicts**
Incorrect, outdated, or incompatible printer drivers.
5. **Hardware Issues**
Problems with memory modules, formatter board, or accessories.
6. **Third-Party Applications**
Some programs send unsupported print commands.
**HP Printer Support at 1-866-203-7571**
## Quick Fixes Before Deep Troubleshooting
Before doing anything advanced, try these simple steps:
1. Turn the printer **off**.
2. Unplug the **power cable** from the back.
3. Wait **60 seconds**.
4. Plug it back in and turn it on.
If the error returns, move on to the full troubleshooting steps below.
**HP Printer Support at 1-866-203-7571**
## Step-by-Step: How to Fix HP 79 Service Error
### 1. Disconnect the Printer from the Network
Network jobs are the #1 reason for this error.
**What to do:**
* Turn off the printer.
* Unplug the **Ethernet cable** (or disable Wi-Fi).
* Turn the printer back on.
If the error disappears, the problem is likely a **corrupt print job** or network communication issue.
**HP Printer Support at 1-866-203-7571**
### 2. Clear the Print Queue
A stuck or damaged file can crash the printer.
#### On Windows:
1. Press **Windows + R**
2. Type: `services.msc` → Enter
3. Find **Print Spooler**
4. Right-click → **Stop**
5. Open:
`C:\Windows\System32\spool\PRINTERS`
6. Delete all files in that folder
7. Go back → Right-click **Print Spooler** → Start
#### On Mac:
1. Open **System Settings > Printers & Scanners**
2. Select your HP printer
3. Click **Open Print Queue**
4. Cancel all print jobs
Reconnect the printer and test again.
**HP Printer Support at 1-866-203-7571**
### 3. Update the Printer Firmware
Firmware bugs often cause 79 Service Errors.
**Steps:**
1. Visit HP’s official support website
2. Enter your printer model
3. Download the **latest firmware update**
4. Install it using USB or network connection
Make sure the printer stays powered ON during the update.
**HP Printer Support at 1-866-203-7571**
### 4. Update or Reinstall Printer Drivers
Outdated drivers can send bad data to the printer.
#### On Windows:
1. Go to **Control Panel > Devices and Printers**
2. Right-click your HP printer → **Remove Device**
3. Download the latest driver from HP’s website
4. Install and reconnect the printer
#### On Mac:
1. Open **System Settings > Printers & Scanners**
2. Remove your HP printer
3. Restart your Mac
4. Add the printer again
**HP Printer Support at 1-866-203-7571**
### 5. Test with a Different Application
Sometimes the error is caused by one program.
**Try this:**
* Print from **Notepad / Word / PDF Viewer**
* If the error happens only with one app, reinstall that app
**HP Printer Support at 1-866-203-7571**
### 6. Disable Advanced Printing Features
Some HP printers don’t handle advanced features well.
**On Windows:**
1. Go to **Devices and Printers**
2. Right-click HP Printer → **Printer Properties**
3. Click **Advanced**
4. Uncheck:
* *Enable advanced printing features*
5. Click Apply → OK
**HP Printer Support at 1-866-203-7571**
### 7. Reset the Printer to Factory Defaults
If nothing works, reset the printer.
**General Method:**
1. Turn printer OFF
2. Hold **Cancel + Right Arrow** (or similar combo depending on model)
3. Turn printer ON while holding buttons
4. Wait for reset message
⚠ Note: This clears settings like IP, Wi-Fi, and preferences.
**HP Printer Support at 1-866-203-7571**
### 8. Check for Hardware Problems
If the error keeps coming back:
* Remove extra **memory DIMMs**
* Remove **USB accessories**
* Check formatter board (advanced users only)
At this stage, professional service is recommended.
**HP Printer Support at 1-866-203-7571**
## Preventing HP 79 Service Error in the Future
Follow these best practices:
✔ Keep printer firmware updated
✔ Use official HP drivers
✔ Clear print queues regularly
✔ Avoid printing corrupted PDFs
✔ Restart the printer weekly
✔ Don’t overload network traffic
**HP Printer Support at 1-866-203-7571**
## When to Call HP Printer Support
If you’ve tried everything and still see **79 Service Error**, it’s time to get expert help.
📞 **Call HP Printer Support at 1-866-203-7571**
They can help with:
* Firmware recovery
* Driver conflicts
* Network printer errors
* Hardware diagnostics
**HP Printer Support at 1-866-203-7571**
## Conclusion
The **HP 79 Service Error** looks serious, but in most cases, it’s caused by a corrupt print job, outdated firmware, or a driver conflict. By disconnecting the network, clearing the print queue, and updating your printer’s software, you can fix the issue quickly and get back to printing.
If the problem persists, don’t waste time guessing—reach out to **HP Printer Support at 1-866-203-7571** for fast and reliable assistance.
**HP Printer Support at 1-866-203-7571**
Sign in with Wallet
Connect another wallet