How to Restrict access to removable storage devices on Windows 10

Disable access to prevent users from connecting foreign devices, which may contain malware that can harm the computer, stop users from trying to make a copy of certain information

• Open Local Group Policy Editor.
  
• Browse the following path: Computer Configuration :: Administrative Templates :: System :: Removable Storage Access
  
• On the right side, double-click the All Removable Storage classes: Deny all access policy. Removable Storage Access Select the Enabled option. All removable storage classes deny all access policy
  
• Click the Apply button.
  
• Click the OK button.
  
• Restart your computer (optional)

video tutorial on youtube :

How to Restrict access to removable storage devices on Windows 10