Are you encountering the frustrating Windows System Error Code ERROR_264 and not sure how to fix it? Don’t worry — you’re not alone, and this guide will walk you through a detailed, easy-to-understand troubleshooting process to get your system back on track.
What is Windows System Error Code ERROR_264?
ERROR_264 typically relates to issues with the Windows Firewall or network configuration. It often occurs when the firewall has configuration problems that prevent network access or application communication. The exact nature may vary depending on your system setup, but it usually results in interruptions during software use or system operations related to networking.
Why Does ERROR_264 Happen?
Common causes of ERROR_264 include:
- Corrupt or misconfigured Windows Firewall settings
- Conflicting third-party firewall or security software
- Recent Windows updates altering firewall rules
- Malware affecting firewall services
- Network configuration errors
Before You Start: Preparation
- Backup your Important Data: Always back up any important files before making system changes to avoid accidental loss.
- Create a System Restore Point: This allows you to revert your system to a previous state if anything goes wrong during troubleshooting.
Step-by-Step Guide to Fix ERROR_264
Step 1: Restart Your Computer
It may sound basic, but many issues are resolved simply by rebooting your system. This clears temporary glitches and reloads system services.
- Save your work and restart your PC.
- Check if ERROR_264 persists after restart.
Step 2: Run Windows Troubleshooter for Network and Firewall
Windows has built-in troubleshooters that can automatically fix common issues.
- Click Start > Settings (gear icon) > Update & Security.
- Select Troubleshoot > Additional troubleshooters.
- Choose Incoming Connections or Network Adapter, then click Run the troubleshooter.
- Follow on-screen instructions.
If the troubleshooter finds and fixes problems, test your system again.
Step 3: Reset Windows Firewall to Default Settings
A corrupted firewall configuration is a frequent cause of ERROR_264.
- Open Control Panel > System and Security > Windows Defender Firewall.
- On the left, click Restore defaults.
- Click Restore defaults button and confirm.
- Restart your computer and see if the issue is resolved.
Step 4: Check for Conflicting Antivirus or Firewall Software
Third-party security programs sometimes clash with Windows Firewall.
- Temporarily disable your antivirus and third-party firewall software.
- To disable, right-click the antivirus icon in the system tray and look for Disable or Pause protection options.
- Test your system for ERROR_264 after disabling.
If disabling the software fixes the issue, consider updating the software or switching to a compatible alternative.
Step 5: Run System File Checker and DISM Tools
Corrupt system files can lead to firewall errors.
- Open Command Prompt as administrator:
- Press Windows key + X > Command Prompt (Admin) or Windows Terminal (Admin).
-
Type the following command and press Enter:
bash
sfc /scannow - Wait for the scan to complete — it will repair any corrupted files if found.
-
Next, run the DISM tool by typing:
bash
DISM /Online /Cleanup-Image /RestoreHealth - After completion, restart your PC and check if ERROR_264 is fixed.
Step 6: Check Windows Firewall Service Status
The firewall service needs to be running properly.
- Press Windows + R, type services.msc, and press Enter.
- Scroll to Windows Defender Firewall service.
- Right-click and select Properties.
- Set Startup type to Automatic, and click Start if the service is not running.
- Click Apply and OK.
- Restart your PC.
Step 7: Scan for Malware
Malware can tamper with your firewall configuration.
- Run a full system scan using Windows Defender or your preferred antivirus software.
- Remove any threats found.
- Restart your system and check for ERROR_264.
Step 8: Update Windows
Operating system updates often include important fixes.
- Go to Settings > Update & Security > Windows Update.
- Click Check for updates.
- Install any available updates.
- Restart your system again.
When to Seek Professional Help
If you’ve followed every step and ERROR_264 still appears, consider:
- Contacting Microsoft Support
- Consulting a professional IT technician
- Using system restore to revert to a previous healthy state
Final Thoughts
Windows System Error Code ERROR_264 can be a hassle, but it’s usually solvable with the right steps. Approach each method patiently and systematically, and your computer will thank you with restored stability.
Remember, technology challenges happen to all of us — troubleshooting them teaches us valuable skills and builds confidence in managing our digital lives.
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Feel free to comment below if you need further help, and don’t forget to share this guide with others who might be struggling with the same issue!
