Would you like to learn how to use a group policy to enable the Windows Defender reputation-based protection on Windows? In this tutorial, we will show you how to create a group policy to enable the reputation-based protection built-in the Windows Defender application on the domain computers.
• Windows 2012 R2
• Windows 2016
• Windows 2019
• Windows 10
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Tutorial GPO – Windows Defender reputation-based protection
On the domain controller, open the group policy management tool.
Create a new group policy.
Enter a name for the new group policy.
In our example, the new GPO was named: MY-GPO.
On the Group Policy Management screen, expand the folder named Group Policy Objects.
Right-click your new Group Policy Object and select the Edit option.
On the group policy editor screen, expand the Computer configuration folder and locate the following item.
Access the folder named Windows Defender Antivirus.
Enable the item named: Configure detection for potentially unwanted applications.
Select the option to block potentially unwanted applications.
To save the group policy configuration, you need to close the Group Policy editor.
If the group policy editor does not have the folder named Windows defender antivirus, you need to download and install the administrative template for Windows 10 20H2 group policies.
Congratulations! You have finished the GPO creation.
Enable the Windows Defender reputation-based protection
On the Group policy management screen, you need to right-click the Organizational Unit desired and select the option to link an existent GPO.
In our example, we are going to link the group policy named MY-GPO to the root of the domain.
After applying the GPO you need to wait for 10 or 20 minutes.
During this time the GPO will be replicated to other domain controllers.
On a remote computer, Verify the Windows Defender configuration.
In our example, the Windows Defender application was configured to use reputation-based protection.
