How to disable the USB port in windows os?

 

How can I prevent users from connecting to a USB storage device?

Problem description

Assume that you want to prevent users from connecting to a USB storage device that is connected to a computer that is running Windows XP, Windows Server 2003, or Windows 2000. This article discusses two methods that you can use to do this.

Resolution

To prevent users from connecting to USB storage devices, use one or more of the following procedures, as appropriate for your situation.

If a USB storage device is not already installed on the computer

If a USB storage device is not already installed on the computer, assign the user or the group and the local SYSTEM account Deny permissions to the following files:

• %SystemRoot%\Inf\Usbstor.pnf

• %SystemRoot%\Inf\Usbstor.inf

When you do this, users cannot install a USB storage device on the computer. To assign a user or group Deny permissions to the Usbstor.pnf and Usbstor.inf files, follow these steps:

1. Start Windows Explorer, and then locate the %SystemRoot%\Inf folder.

2. Right-click the Usbstor.pnf file, and then click Properties.

3. Click the Security tab.

4. In the Group or user names list, add the user or group that you want to set Deny permissions for.

5. In the Permissions for UserName or GroupName list, click to select the Deny check box next to Full Control.
   
   Note Also add the System account to the Deny list.

6. In the Group or user names list, select the SYSTEM account.
   

7. In the Permissions for UserName or GroupName list, click to select the Deny check box next to Full Control, and then click OK.
   

8. Right-click the Usbstor.inf file, and then click Properties.

9. Click the Security tab.

10. In the Group or user names list, add the user or group that you want to set Deny permissions for.

11. In the Permissions for UserName or GroupName list, click to select the Deny check box next to Full Control.

12. In the Group or user names list, select the SYSTEM account.
    

13. In the Permissions for UserName or GroupName list, click to select the Deny check box next to Full Control, and then click OK.

If a USB storage device is already installed on the computer