When hard disk encryption is activated in device posture, attached USB storage devices may cause the check to fail.

Applicable to:

Twingate Component: Client | Device Security
Platform: Windows

Overview

When encryption is added as a condition to the device posture check, it may trigger a "Device security error" when a USB flash drive (or other storage device) is connected.

Symptoms

connect to Twingate fails with "Device security not met"

Cause

In some cases, Windows will detect the USB device (falsely) as the local disk and it usually will not have encryption enabled.

Resolution

Disconnecting the USB device will resolve this. We are currently evaluating other methods to filter out USB drives from being detected as not encrypted.