Hcnetsdk.dll 9 Hikvision Error -

NET_DVR_USER_LOGIN_INFO loginInfo; loginInfo.dwSize = 0; // ❌ missing size strcpy(loginInfo.sDeviceAddress, "192.168.1.100"); loginInfo.wPort = 8000;

Try channel 1 first. If that fails, log the response from NET_DVR_GetLastError() . hcnetsdk.dll 9 hikvision error