How to Prevent Copying Files to a USB Drive

Use GiliSoft USB Lock when you need to stop users from copying files to unauthorized USB drives and removable storage devices on Windows PCs.

What This Workflow Does

Block write access to unauthorized USB storage devices.
Reduce copy-out risk on office and shared computers.
Support whitelist rules when approved USB drives should still work.
Fit environments where removable-device policy matters more than encrypted storage.

1. Install and open GiliSoft USB Lock.

2. Go to the USB drive access controls.

3. Disable USB write access or block unknown USB storage devices.

4. Add approved drives to the trusted-device list if needed.

5. Test file copy behavior on a removable drive to confirm the policy is working.

This page is best when the goal is stopping file copy-out to USB media rather than encrypting the drive itself.