How to Block USB Storage Devices on Windows

Use GiliSoft USB Lock to block unauthorized USB flash drives, external disks, and removable storage devices on Windows while still allowing approved devices when needed.

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What This Workflow Does

Block unknown USB storage devices from being read or written.
Reduce data leakage risk on shared office, school, or business computers.
Let approved devices stay available through whitelist rules.
Support environments where removable media needs tighter policy control.

How to Block USB Storage Devices

1. Install and open GiliSoft USB Lock.

2. Go to the USB drive control area.

3. Disable USB reading, USB writing, or general USB storage access according to your policy.

4. Add trusted devices to the whitelist if approved drives should remain usable.

5. Test the policy on a removable drive to confirm blocked and allowed behavior.

When This Page Is Most Useful

This page is best when the user wants device-level USB restrictions rather than encryption on the drive itself.