How to Block USB File Copying on Windows

Use GiliSoft USB Lock to block USB file copying on Windows when you need to stop uncontrolled transfers to flash drives, external disks, and other removable storage devices.

Buy USB Lock Download Trial

Why Block USB File Copying

Reduce data leakage caused by copying files to personal or unknown removable drives.
Control which USB devices can move files on office and shared PCs.
Protect workstations that handle internal documents, customer files, or support data.
Keep copy restrictions practical without turning every device into an encryption workflow.

How to Block USB File Copying

1. Install GiliSoft USB Lock on the Windows PC you want to protect.

2. Enable USB storage restrictions so removable devices cannot be used for uncontrolled copy-out.

3. Test with a flash drive or portable disk to confirm files can no longer be copied through blocked devices.

4. Add trusted devices to the allow list only when approved transfer workflows still need to work.

When This Page Fits Best

This page fits admins and business users who want to stop USB-based file copying without deploying a broader endpoint platform.