For models like SpeedFace or MultiBio:
Sometimes the device authenticates the finger perfectly, but the server rejects the user due to a communication error disguised as "Authentication Failure." zkteco authentication failure solution best
Before deep-diving, perform this 30-second reset: For models like SpeedFace or MultiBio: Sometimes the
Why this works: ZKTeco’s flash memory fragments over time. A data purge realigns template pointers. Why this works: ZKTeco’s flash memory fragments over time
When authentication fails intermittently or for all users:
Do not wait for authentication failure to happen again.
| Schedule | Action | Tool | | :--- | :--- | :--- | | Daily | Wipe sensor with dry microfiber cloth. | Dry cloth | | Weekly | Test all 10 enrolled users. Re-enroll any finger that fails twice. | Admin card | | Monthly | Check power supply voltage (11.5V – 12.5V). | Multimeter | | Quarterly | Backup user data to USB. Factory reset and restore. | USB drive | | Annually | Replace backup battery (if model has one). | OEM battery |