How to Disable All External USB / Mass Storage Devices on a Windows
1. Click on “Start” button.
2. At the bottom of the menu in the search box type “gpedit.msc” (without quotes).
3. In the “Local Computer Policy” snap-in under “Computer Configuration” expand “Administrative Templates” tree.
4. Expand “System” sub-tree.
5. Select “Removable Storage Access” from “System” sub-tree.
6. In the right pane double click on “All Removable Storage classes: Deny all access”.
7. In the “All Removable Storage classes: Deny all access” window select “Enabled” radio button to enable restriction.
8. All Removable Storage Classes Deny all Access
9. Click on “Ok” button to accept and confirm your selection.
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