Would you like to learn how to configure a group policy to disable the use of external storage devices? In this tutorial, we will show you how to deny access to external storage devices 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 – Disable external storage devices

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 Computer configuration folder and locate the following item.

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Access the option named Removable storage access.

GPo - Removable Storage Access

Enable the option named All Removable Storage classes: Deny all access.

GPO - Deny USB Storage access

Here is the list of external storage devices:

• USB flash drive
• USB disk
• CD and DVD
• Windows Portable Devices
• Tape drives
• Floppy drives

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 disable external storage devices

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.

To test the configuration, connect an external storage device to a computer.

GPO - Disable USB Storage access

In our example, we disabled the use of external storage devices on all domain computers using a GPO.