Double-check the Device ID (usually 1) and the IP address. In this older version, the PC and the device must be on the same subnet. Should You Upgrade?
Ensure you extract the entire folder structure, not just the .exe . zk attendance management 2008 ver 371 build 130rar link fix
Resolving Installation Issues: ZK Attendance Management 2008 (Ver 3.7.1 Build 130) Double-check the Device ID (usually 1) and the IP address