Would you like to learn how to configure a group policy to show the file extensions? In this tutorial, we will show you how to display the file extensions on Windows using a GPO.

• Windows 2012 R2
• Windows 2016
• Windows 2019
• Windows 10
• Windows 7

Equipment list

The following section presents the list of equipment used to create this tutorial.

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Tutorial GPO - Show the file extensions

On the domain controller, open the group policy management tool.

Windows 2012 - Group Policy Management

Create a new group policy.

Windows 2012 - Group Policy Objects

Enter a name for the new group policy.

Windows - Add GPO

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.

Windows - Edit GPO

On the group policy editor screen, expand the User configuration folder and locate the following item.

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Create a new folder option.

GPO - Show file extension

On the Advanced tab, uncheck the option named Hide extensions for known file types.

GPO Folder options - Show file extensions

Click on the OK button.

To save the group policy configuration, you need to close the Group Policy editor.

Congratulations! You have finished the GPO creation.

Tutorial - Applying the GPO to display the file extensions

On the Group policy management screen, you need to right-click the Organizational Unit desired and select the option to link an existent GPO.

Windows-2012-Applocker application

In our example, we are going to link the group policy named MY-GPO to the root of the domain.

GPO- tutorial linking

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 if the file extensions are being displayed.

GPO - Display file extensions

In our example, we configure the folder options to display the file extensions using a GPO.