Zkteco Authentication Failure Solution !!exclusive!! -

If device time differs from server time by >5 minutes, some systems reject verification. Enable NTP (Menu > System > Time > NTP) or manually sync.

An "Authentication Failure" on ZKTeco devices usually happens during user verification (fingerprint/card) or when trying to access the device menu. 1. Verification Failure (Fingerprint or Face) If the device rejects a user during clock-in/out: zkteco authentication failure solution

: A flickering or "frozen" screen might indicate power fluctuations. Perform a hard reboot by disconnecting the power for 30 seconds. 2. Software Troubleshooting: Resolve Connection Issues If device time differs from server time by

: If no admin is set, try these common default passwords found in ZKTeco User Guides : Admin Password : 1234 . Web Interface : 123456 with username administrator . zkteco authentication failure solution