In the world of Hikvision CCTV and security systems, is the equivalent of a locked door with the wrong key. It is one of the most common yet misunderstood errors in the Hikvision ecosystem.
| Code | Meaning | Key difference | |------|---------|----------------| | 1 | NET_DVR_NO_ERROR | No error | | 7 | NET_DVR_NETWORK_FAIL_CONNECT | Can’t reach device at all | | | NET_DVR_DEVICE_NOT_REGISTERED | Had a session, but it’s gone | | 131 | NET_DVR_NET_RECV_DATA_TIMEOUT | Connection exists but device not responding | hikvision error code hcnetsdkdll 23 better