| | Action | |----------|------------| | 1 | Verify Basic Network Connection: Ensure the device is powered on and the network cable is properly connected to both the device and the switch/router. Test connectivity by running ping [device IP address] from your computer. | | 2 | Check IP Configuration: Navigate to the device's main menu > Communication > Ethernet. Confirm the IP address, subnet mask, and default gateway are correct for your network. If using DHCP, verify the device has successfully obtained an IP address. | | 3 | Fix Duplicate IP Addresses: If you experience error code -10054 (WSAECONNRESET), it often means two ZKTeco devices on your network have the same IP address. Resolve by manually restarting each device or assigning static, unique IPs to each unit. | | 4 | Check Firewall and Ports: Ensure the computer's firewall or network firewall is not blocking communication on the required ports (default is usually port 4370 for TCP/UDP). | | 5 | Verify Server Address for Cloud Sync: If using a cloud-based connection, navigate to COMM. > Cloud Server Setting and verify the server address and port are correctly set (default port often 8088). |
The way a user places their finger on the sensor significantly impacts recognition accuracy. Common mistakes include placing the finger at an upright angle, placing it sideways, or using only the fingertip tip rather than the flat pad of the finger. Users should place their finger flat on the sensor surface, avoiding fast movements or sliding motions. The finger should be pressed firmly but not excessively hard, and the entire fingerprint should make contact with the sensor.
Sometimes the device is "too strict." You can lower the security threshold to allow for minor variations in a scan. Go to System > Fingerprint . Find Threshold: Locate the 1:N Threshold setting. Lower the value: Drop it slightly (e.g., from 45 to 35). zkteco authentication failure solution best
The most common cause is a dirty or oily sensor. Clean the optical sensor with adhesive tape or a soft, dry, lint-free cloth after powering off the device. Never use water or other detergents which may damage the sensor. If a finger is stained, wipe it off; if too dry, blow some warm air from your mouth onto the fingertip to add moisture.
Avoid using DHCP, which can change the device's IP and break the connection to the server. Manually assign a static IP. | | Action | |----------|------------| | 1 |
Use a dry, lint-free microfiber cloth to remove oils, dust, or smudges from the optical glass.
Preventive maintenance reduces authentication failures over the device's lifetime. Confirm the IP address, subnet mask, and default
Experiencing repeated "Verification Failed" messages on your ZKTeco biometric device can be frustrating for both employees and system administrators. Whether your organization uses fingerprint recognition for access control, facial recognition for attendance tracking, or a combination of multiple verification methods, authentication failures can disrupt daily operations and compromise security protocols. This comprehensive guide explores the most common causes of ZKTeco authentication failures and provides the best solutions to resolve them quickly and effectively.
Issues with the user's biometric traits or the device scanner.
: In the root directory of the USB drive, create a folder named DeleteLicense .