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How Security Software Can Prevent Your Printer from Working on Windows 10 & 11

Even when your printer is powered on and connected, it may fail to print or show as unavailable. One often-overlooked reason is your computer’s security software. Firewalls, antivirus programs, and other protective tools may block communication with your printer, especially over Wi-Fi or network connections.

This guide explains how security software can interfere with printing and provides safe, step-by-step methods to restore normal printer functionality.

Disclaimer
This content is educational and informational. We are not affiliated with any printer manufacturer or software provider. For device-specific guidance, refer to your printer’s official resources.

Why Security Programs May Block Your Printer

Security software is designed to safeguard your computer by monitoring network and system activity. In some cases, it may misinterpret printer communications as a potential threat.

Possible Signs of Interference:

  • The printer shows as offline even though it is powered on

  • Accessing the printer’s IP address works, but printing fails

  • Printing temporarily works when the firewall or antivirus is turned off

Step 1: Test Printing with Security Software Disabled

Before making permanent changes, test whether your security software is causing the problem.

For Windows Firewall:

  1. Go to Start > Settings > Privacy & Security > Windows Security > Firewall & Network Protection

  2. Select the active network (Private or Public)

  3. Turn off the firewall temporarily

  4. Try printing a document

  5. Turn the firewall back on immediately

For Third-Party Antivirus or Firewall:

  1. Right-click the antivirus icon in your system tray

  2. Choose the option to temporarily disable or pause protection

  3. Attempt to print

  4. Re-enable protection afterward

Step 2: Allow Your Printer in Windows Firewall

If printing works after disabling the firewall, create a permanent exception:

  1. Open Windows Security > Firewall & Network Protection > Allow an app through firewall

  2. Click “Change settings”

  3. Find your printer software in the list and enable both Private and Public networks

  4. If your printer isn’t listed, click “Allow another app,” select the printer software, and add it

  5. Save changes and restart your computer

Step 3: Adjust Settings in Third-Party Security Programs

For non-Microsoft security software:

  1. Open the application and locate Firewall or Network Protection settings

  2. Add your printer’s IP address to the allowed devices list

  3. Permit printer-related software such as the print spooler

  4. If available, allow common printer ports:

    • TCP 9100 (Raw printing)

    • TCP 631 (IPP)

    • TCP 515 (LPD)

    • UDP 161/162 (SNMP)

  5. Check your printer’s manual for any specific port requirements

Step 4: Use a Private Network Profile

Windows allows different settings for Public and Private networks. Using a Private network can improve communication with network printers:

  1. Open Start > Settings > Network & Internet

  2. Select Wi-Fi or Ethernet

  3. Choose your current network

  4. Set the network type to Private

Step 5: Restart Devices

After updating security settings:

  1. Turn off and on your printer

  2. Restart your computer

  3. If using Wi-Fi, restart your router

Final Notes

Security software is important, but it can sometimes interfere with printing. Testing and configuring firewall exceptions, allowing the printer in antivirus programs, and setting your network to Private can resolve most issues. Always refer to your printer manufacturer’s official resources for device-specific guidance.