A version mismatch between the software and the fingerprint reader driver.
While direct legacy links are scarce, newer versions and SDKs can be found at the ZKTeco Download Center . Best Fixes for Common Issues 1. Connection Failures (Device Communication) att2008 attendance management download best fix
Ensure the "Device ID" in the software matches the ID set on the physical machine (usually 1). 3. Data Sync & Download Fixes A version mismatch between the software and the
Define work hours and attendance rules within the "Shift Management" tab. att2008 attendance management download best fix