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How to block USB Flash & External Hard Drive via Group Policy Windows Server 2012

Today I going to show you how to block USB flash drives on a computer via Group Policy. For security reason most of the Companies used to blockUSB for security or to restrict user from copying confidential information from computer & take it away.
Belwo tip will allow system administrator to block usage of USB removable disks, but it will allow usage of USB keyboard, Mouse , Printer & even Ipod will work without any issues :)
Follow below steps to block usb removaldrivers,
1. Login to your Windows 2008 Active Directory server.
2. Navigate to Start Menu-> Administrative Tools->Ope Group Policy Management
3. Navigate to Computer Configuration->Policies->Administrative Templates: Policy Definations-. & select Removable Storage Access.
4. Now you will be able to see the new settings in the right pane of Removable Storage Access.
5. Now Enable “Removable DIsks:Deny read access”, “Removable Disks: Deny write access”, All removable Storage classes: Deny All access” & All removable Storage: Allow direct access in remote sessions” as shown below screen shot.
6. Now go to client machine & update group policy from command prompt as show below to apply the new policy..
#gpupdate /force