My Windows Defender Won T Turn On

Microsoft Windows 10 users may experience a common problem where Windows Defender won’t start on their system. The issue is often noticed when trying to turn Antivirus Protection on. Instead of the service turning on, the WindowsSystem32 folder will open. The following fixes usually will fix this problem. Fix 1 – Ensure Services are Started.

Microsoft Windows 10 users may experience a common problem where Windows Defender won’t start on their system. The issue is often noticed when trying to turn Antivirus Protection on. Instead of the service turning on, the WindowsSystem32 folder will open.

The following fixes usually will fix this problem.

Fix 1 – Ensure Services are Started

1. Hold the Windows Key and press “R” to bring up the Run box.
2. Type “services.msc“, then press “Enter“.
3. Select “Name” at the top of the row to sort by name, then scroll down to the entries that start with “Windows Defender“.
4. Open anything that starts with “Windows Defender” and ensure the “Startup type” is set to “Automatic“. They should be listed as:
   • Windows Defender Advanced Threat Protection Service
   • Windows Defender Antivirus Network Inspection Service
   • Windows Defender Antivirus Service
   • Windows Defender Firewall
   • Windows Defender Security Center
5. Restart the computer, then check to see if Windows Defender starts up.

Fix 2 – Registry Fix

1. Login to the computer using an accoun that has Administrator rights.
2. Hold the Windows Key and press “R” to bring up the Run box.
3. Type “regedit“, then press “Enter“.
4. The Registry Editor opens. Navigate to the following location in the registry:
   • HKEY_LOCAL_MACHINE SOFTWARE Microsoft Windows Defender
5. Right-click the Windows Defender folder, then select “Permissions“.
6. The Permissions window opens. Select the “Advanced” button.
7. Select the “Change” link at the top of the window.
8. In the “Enter the object name to select“, type “Administrators” then select “OK“.
9. Check the “Replace owner on subcontainers and objects box” then select “Apply“.
10. Double-click on the “Administrators” permission entry.
11. Check the “Full Control” box, then select “OK“.
12. Select “OK” again, then close the Registry Editor.
13. Download the DefenderFix.zip file. This file contains information to fix a registry key.
14. Open “DefenderFix.zip“, then open the “DefenderFix.reg” file.
15. When prompted to import the changes, select “Yes“.
16. Restart the computer, then check to see if Windows Defender starts up.

Can't Turn On Windows Defender Firewall. How To Fix It?Each Windows operating system, starting from Windows XP and Windows Server 2003, has a built-in Windows Firewall (now known as Windows Defender Firewall). Windows Firewall is a security tool created by Microsoft that runs in the background and keeps the operating system safe from various network threats.

The application filters network data transmissions, blocks programs that are initiating harmful communications, and prevents unauthorized users from gaining access to your computer through the internet or other network.Windows Firewall is fine for basic use, since it protects against various threats and allows you to configure settings depending on how you use your computer. This includes blocking a program in Windows Firewall. Many programs have elements that require an internet connection to download updates, allow online purchases, and so on. These can upload data without your knowledge. Windows Firewall is useful in this respect, since it allows you to take control over how and when programs are able connect to the internet, thus providing more security for your computer.Windows Firewall is an important part of Microsoft Windows operating systems. Without it, your computer could be in potential danger each time you connect to the internet or any other network.

You are advised to have it enabled continually, however, some users have reported that they have problems enabling the program. You should resolve this issue as soon as possible to stay protected online. Fortunately, there are ways to fix this problem, as illustrated in this guide. You might need to restart the Windows Firewall service, edit Windows Registry, reset Windows Firewall settings, run troubleshooters, and take other measures. Below you will find detailed descriptions with screenshots that will demonstrate how to address the issues and enable Windows Firewall.Table of Contents:. It is recommended to run a free scan with Malwarebytes - a tool to detect malware and fix computer errors. You will need to purchase the full version to remove infections and eliminate computer errors.

Free trial available. Run Windows TroubleshooterFirstly, we recommend that you run a number of troubleshooters: a built-in Windows troubleshooter and a downloadable Microsoft easy fix troubleshooter.

The Microsoft easy fix tool helps to diagnose and resolve problems with Microsoft products (in this case, Windows Defender Firewall) or issues with third-party software that affects Microsoft products. These are usually the.msi or.diagcab packages. In this case, you will need to use the.diagcab package.

Click and download the troubleshooter, open it and click 'Advanced'. Click the 'Run as administrator' option. The troubleshooter will be relaunched.