The number inside the brackets—in this case, [23] —is the official error code, which points to a specific problem. According to official Hikvision documentation and developer references, . The full error message in the iVMS-4200 software often reads: "Error Code HCNetSDK.dll[23].(Not supported.)" .
In iVMS-4200, right-click the live view and force it to use the Main Stream instead of the Sub-stream.
LONG userID = NET_DVR_Login_V40(&loginInfo, &devInfo); if (userID < 0) DWORD err = NET_DVR_GetLastError(); if (err == 23) std::cout << "ERROR 23: Invalid username or password. Check credentials and user lockout status." << std::endl;
Firmware acts as the device's operating system. An outdated version can cause protocol conflicts.
While not a pure authentication error, an IP conflict leads to the SDK communicating with a different device on the same IP. When iVMS sends credentials to that wrong device, verification fails, returning Error 23.
If using a PC-NVR, navigate to the storage settings and ensure the recording schedule is correctly mapped to an active partition. 3. Update Firmware and Software Older versions of Go to product viewer dialog for this item.
Are you seeing this on ? How many cameras are you trying to view at the same time? What resolution (e.g., 2MP, 4K) are the cameras set to?
: The SDK version being used is newer than the device firmware, or vice versa, causing a mismatch in expected data structures. [3] Input Range Violation
