NET_DVR_USER_LOGIN_INFO loginInfo = 0; loginInfo.dwSize = sizeof(NET_DVR_USER_LOGIN_INFO); // Check IP string is valid, port >0, user/pass not empty
Enable SDK logs using NET_DVR_SetLogPrint to see the exact point of failure within the internal library workflow. 4. Resolution Strategies 4.1 Development Best Practices
It sounds like you're encountering an error related to hcnetsdk.dll (the Hikvision network SDK library) with a return code of . In Hikvision SDKs, error code 9 typically means: hcnetsdk.dll 9 hikvision error
This error means the Hikvision SDK failed to load a necessary DLL dependency. It is a network or login error—it occurs before any connection attempt.
If you are a developer, ensure the HCNetSDK.dll and its dependent folders (like HCNetSDKCom ) are in the same directory as your .exe . The error often stems from the application finding the main DLL but not its sub-components. NET_DVR_USER_LOGIN_INFO loginInfo = 0; loginInfo
Ping your NVR or camera IP address continuously using ping [Device_IP] -t . Monitor for any packet loss or latency spikes over 50ms.
The "hcnetsdk.dll" file is a dynamic link library associated with Hikvision's SDK (Software Development Kit), which is used for developing software that interacts with Hikvision's IP cameras, NVRs (Network Video Recorders), and other surveillance devices. The error might occur in applications that rely on this SDK for device communication. In Hikvision SDKs, error code 9 typically means:
While error [2] specifically denotes permission issues, some data reception failures occur if the account used to add the device lacks "Remote Live View" or "Playback" rights. Log in as an to test if the error persists. Rebuild Storage (Playback Only)
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