Ensure your PC and ZKTeco device are on the same local network (LAN). The factory default IP address for many ZKTeco terminals is often 192.168.1.201 or 192.168.1.234 .
If an administrator user already exists on the device, the web login requires that specific admin user's ID and password instead of the defaults. zkteco web 30 default username and password link
Ensure your device has an IP address assigned (default is often 192.168.1.201 or 192.168.1.234 ). Ensure your PC and ZKTeco device are on