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How to Fix Windows System Error Code ERROR_56: Step-by-Step Troubleshooting Guide


If you’ve encountered Windows System Error Code ERROR_56, you’re not alone. This error can interrupt your workflow and cause frustration, but don’t worry — with a little patience and the right steps, you can resolve it efficiently. In this detailed, easy-to-follow guide, we’ll walk you through what this error means, why it happens, and how you can fix it.


What is Windows System Error Code ERROR_56?

ERROR_56 is a Windows system error code that essentially means "A network request is not supported." This error typically occurs when a program or service tries to perform a network operation that is either blocked or not recognized by your system’s network stack.

The causes may vary from:

  • Corrupted system files related to networking
  • Outdated or incompatible network drivers
  • Network service issues
  • Firewall or security software conflicts

Understanding the cause will help you pick the right fix.


Why Does ERROR_56 Happen?

Common reasons include:

  • Faulty drivers or outdated network adapters
  • Conflicts between third-party firewall and Windows networking services
  • Corrupt or missing system files
  • Problems after Windows updates or software installations


Before You Begin: Basic Checks

  1. Restart Your PC
    Simple but powerful—sometimes a reboot resets network services and clears glitches.

  2. Check Internet Connection
    Make sure your connection is active. Try browsing other sites or running a ping test.

  3. Temporarily Disable Antivirus/Firewall
    Security software can sometimes overprotect your system causing network requests to fail.


Step-by-Step Guide to Fix ERROR_56

Step 1: Run Windows Network Troubleshooter

Windows has built-in troubleshooters that automatically detect and fix common network issues.

  1. Click StartSettingsUpdate & SecurityTroubleshoot.
  2. Select Internet Connections and click Run the troubleshooter.
  3. Follow the on-screen instructions.
  4. Restart your computer.

Step 2: Update Network Drivers

Outdated or corrupted drivers are a frequent source of network errors.

  1. Press Windows + X and select Device Manager.
  2. Expand Network adapters.
  3. Right-click your network device and select Update driver.
  4. Choose Search automatically for updated driver software.
  5. Restart your PC after updates.

Step 3: Reset Network Settings

Resetting network components can resolve faulty configurations.

  1. Open Command Prompt as Administrator. To do this, type cmd in Start, right-click Command Prompt, and choose Run as administrator.
  2. Run these commands one by one:

    netsh winsock reset
    netsh int ip reset
    ipconfig /release
    ipconfig /renew
    ipconfig /flushdns

  3. Restart your PC.

Step 4: Check Windows Services for Network Dependency

Ensure necessary services are running properly:

  1. Press Windows + R, type services.msc, and hit Enter.
  2. Locate these services and ensure their Startup Type is Automatic and they are running:

    • DNS Client
    • DHCP Client
    • Network Connections
    • Network List Service
    • Network Location Awareness
  3. If any are stopped, right-click and select Start.

Step 5: Disable Third-Party Firewall and Security Temporarily

Sometimes third-party security software can block crucial network operations.

  1. Locate your antivirus or firewall icon in the system tray.
  2. Right-click and choose the option to disable it temporarily.
  3. Check if the error disappears.
  4. Remember to enable your security software afterward to keep your PC safe.

Step 6: Scan for Corrupted System Files

Corrupted or missing system files can cause networking errors.

  1. Open Command Prompt as Administrator.
  2. Type and run:

    sfc /scannow

  3. Wait for the process to complete and follow any prompts.
  4. Restart your PC.

Step 7: Check Windows Update

Make sure your system is up to date, as updates often fix bugs and network issues.

  1. Go to SettingsUpdate & SecurityWindows Update.
  2. Click Check for updates.
  3. Install any available updates and restart.


Bonus Tips: Preventing Future Network Errors

  • Regularly update your network drivers and Windows OS.
  • Avoid installing suspicious third-party network utilities.
  • Keep your antivirus and firewall software updated.
  • Backup system periodically to quickly restore if issues occur.


Final Thoughts

Error codes like ERROR_56 can be annoying, but with some step-by-step troubleshooting, you usually don’t need to call in professional help. Follow this guide at your own pace, and don’t hesitate to ask for help if something feels too technical.

Remember, technology is a tool to empower you — don’t let frustrations hold you back!


Was this guide helpful?

If this guide helped you fix ERROR_56 or you have your own tips to share, drop a comment below. And don’t forget to share this article with friends or colleagues who might run into similar Windows errors!


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Updated on June 17, 2025
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