Fix Windows Defender Firewall rule is blocking your connection in Windows 10


In our digitally connected world, a seamless internet connection is crucial for both work and leisure. Imagine this scenario: you’re excited to hop into a multiplayer online game with friends, join an important video conference call, or simply stream your favorite movie when suddenly, your Windows 10 computer throws a wrench in your plans. Your connection is blocked by Windows Defender Firewall, leaving you frustrated and wondering how to resolve this issue.

Fear not, for in this comprehensive guide, we will walk you through the step-by-step process of fixing the “Windows Defender Firewall rule is blocking your connection” problem in Windows 10. We’ll delve into real-life scenarios, explore potential reasons for the issue, highlight common error codes, and provide multiple solutions, both automatic and manual, to ensure you can regain control of your internet connection.

Real-Life Scenario

Consider this: you’re a professional working from home, about to attend a crucial online meeting with your international team. The clock is ticking, and you click on the meeting link, only to encounter a cryptic error message that your connection is blocked by Windows Defender Firewall. This seemingly innocent obstruction could jeopardize your business prospects, delay project timelines, and impact your professional reputation.

Now, let’s explore the reasons behind this frustrating issue and understand the potential pitfalls you might encounter.

Possible Reasons for the Issue

  1. Misconfigured Firewall Rules: The most common reason is misconfigured Windows Defender Firewall rules, which might be blocking legitimate connections.
  2. Third-Party Firewall Software: If you’ve installed third-party firewall software, it could conflict with Windows Defender Firewall settings, leading to connectivity problems.
  3. Malware or Viruses: Malicious software could alter your firewall settings, causing unwanted blocks.
  4. Windows Updates: Occasionally, Windows updates can reset firewall rules, leading to connection issues.
  5. Corrupted Firewall Service: A corrupted Windows Defender Firewall service can disrupt your network connections.

Now, let’s explore some common error codes you might encounter and provide examples:

Common Error Codes

  1. Error 0x80070422: This error code indicates that the Windows Firewall service is not running. You might see a message like, “Windows Defender Firewall can’t change some of your settings.”
  2. Error 0x80070005: This code signifies that you don’t have sufficient permissions to modify firewall rules. You might encounter an error message such as, “Windows Defender Firewall has blocked some features of this app.”

With these potential roadblocks in mind, let’s delve into the solutions:

How to Fix Windows Defender Firewall Rule Blocking Your Connection

Automatic Solutions:

1. Windows Troubleshooter

  • Step 1: Press Win + I to open Settings.
  • Step 2: Navigate to “Update & Security” > “Troubleshoot.”
  • Step 3: Select “Internet Connections” and run the troubleshooter.

2. Reset Firewall Settings

  • Step 1: Press Win + X and choose “Windows Terminal (Admin)” or “Command Prompt (Admin).”
  • Step 2: Type netsh advfirewall reset and press Enter.
  • Step 3: Restart your computer.

Manual Solutions:

1. Check Firewall Rules

  • Step 1: Open Control Panel and navigate to “System and Security” > “Windows Defender Firewall.”
  • Step 2: Click on “Advanced settings.”
  • Step 3: Review inbound and outbound rules, ensuring that they’re not blocking your desired connections.

2. Disable Third-Party Firewall

  • If you’re using third-party firewall software, consider disabling it temporarily to see if it’s causing the issue.

3. Scan for Malware

  • Run a comprehensive antivirus and anti-malware scan to ensure your system is not infected.

4. Check for Windows Updates

  • Ensure your system is up to date by going to “Settings” > “Update & Security” > “Windows Update.”


Regaining control of your internet connection when Windows Defender Firewall rules block it might seem daunting at first, but with the right knowledge and steps, it’s entirely manageable. Remember that each solution may work differently depending on your specific situation, so don’t hesitate to explore multiple options.

By following the steps outlined in this guide, you can tackle the “Windows Defender Firewall rule is blocking your connection” issue in Windows 10 and enjoy uninterrupted connectivity once again.


Q1: Can I safely disable Windows Defender Firewall? A1: While it’s not recommended to disable it entirely, you can configure firewall rules to allow specific apps and services while maintaining overall protection.

Q2: Why do I encounter this issue after Windows updates? A2: Windows updates sometimes reset firewall rules. Ensure your firewall settings are updated after major OS updates.

Q3: Is it necessary to use third-party firewall software alongside Windows Defender Firewall? A3: Windows Defender Firewall is robust on its own. Using third-party software is a matter of personal preference and specific security needs.

Q4: How often should I scan for malware? A4: Regularly scan for malware at least once a week, and always perform a scan after downloading files from untrusted sources.

Q5: Can I create custom firewall rules? A5: Yes, you can create custom rules in Windows Defender Firewall to allow or block specific apps and services based on your preferences.

Sakshi Anant Author