#include "HCNetSDK.h" #include <iostream>int main() NET_DVR_Init(); NET_DVR_SetConnectTime(2000, 1);
NET_DVR_USER_LOGIN_INFO loginInfo = 0; NET_DVR_DEVICEINFO_V40 devInfo = 0; strcpy(loginInfo.sDeviceAddress, "192.168.1.100"); loginInfo.wPort = 8000; strcpy(loginInfo.sUserName, "admin"); strcpy(loginInfo.sPassword, "your_password"); loginInfo.bUseAsynLogin = 0; // synchronous 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; else std::cout << "Login successful. User ID: " << userID << std::endl; NET_DVR_Logout(userID); NET_DVR_Cleanup(); return 0;
If you are using Hikvision software to connect a non-Hikvision ONVIF camera, the ONVIF user must have "Operator" or "Administrator" privileges. A "Viewer" level ONVIF user will trigger Error 23.
Hikvision devices have two distinct security layers:
If your device has a Verification Code (6-12 uppercase letters/digits) set but iVMS is trying to log in using only the admin password, Error 23 appears.
Hikvision error code HCNetSDK.dll[23] translates to "Not supported". This typically occurs when the client software (like iVMS-4200) attempts to perform a function or request a parameter that the specific device hardware or current configuration does not allow. Common Causes & Fixes
Unsupported Playback Modes: Often triggered when trying to use "Event Playback" or "Motion Detection" searches if the recording template on the device is not compatible (e.g., set to "Event" when the device only supports continuous recording for that feature).
Fix: Verify your recording schedule in the NVR/DVR settings and ensure it is set to match the search type you are performing.
Incompatible Video Parameters: Occurs when trying to save or change video resolution, framerate, or encoding settings (like H.265) that the device does not support.
Fix: Access the device directly via a web browser and check the Video/Audio Configuration to ensure the settings you are applying are within the hardware's capabilities.
Firmware Mismatch: The software may be sending commands that require a newer firmware version than what is currently installed on the device.
Fix: Check for and update to the latest firmware for your specific model.
Verification Code Requirement: If the error appears when trying to decrypt or access a stream, it may be related to a missing or incorrect stream encryption password.
Fix: Locate your Verification Code on the device label or under Configuration > Network > Advanced Settings > Platform Access. hikvision error code hcnetsdkdll 23 verified
For more detailed troubleshooting, you can refer to the official Hikvision FAQ page.
Are you seeing this error during live view, playback, or while changing settings in iVMS-4200?
The Hikvision error code HCNetSDK.dll 23 (often appearing as NET_DVR_NOSUPPORT) explicitly signifies that the specific function or operation requested is not supported by the hardware or current configuration.
This error typically triggers when a user attempts to access a feature that the device physically lacks or that hasn't been enabled in its current operating mode. Below is a breakdown of the most common causes and verified solutions. Common Causes of Error Code 23
The "Function Not Supported" error usually surfaces in these scenarios:
Unsupported Search Features: Attempting "Event Playback" on a device (like a NAS drive or standard DVR) that lacks Video Content Analysis (VCA) or "Smart" capabilities.
PTZ Misconfiguration: Trying to use Pan-Tilt-Zoom (PTZ) controls on a fixed camera that does not have PTZ hardware.
Recording Template Mismatch: Error 23 is frequently introduced when switching the recording template to "Event" on iVMS-4200 PC-NVR if the storage server does not support that specific recording type.
Parameter Changes: Attempting to change video resolution or frame rates on a channel that does not support manual adjustment of those specific settings. Verified Solutions and Fixes 1. Verify Hardware Compatibility
Before troubleshooting software, confirm if your device supports the feature you are trying to use.
For Event Playback: If you receive this error when searching for motion or smart events, ensure your camera or NVR has VCA (Video Content Analysis) capabilities. Standard NAS storage setups often lack this specialized search feature.
For PTZ Operations: Ensure the camera model is explicitly a PTZ camera. Fixed lenses will always return Error 23 if PTZ commands are sent. 2. Adjust iVMS-4200 Stream Settings
If you encounter this during a live view or configuration change:
Switch Stream Type: Try switching from the "Main Stream" to the "Sub Stream" in the iVMS-4200 software to see if the device supports the request at a lower resolution. #include "HCNetSDK
Modify Video Type: Navigate to Remote Configuration > Basic Settings > Video & Audio. Ensure the "Video Type" is set to "Video & Audio" only if the camera has an integrated microphone. If it doesn't, selecting "Video & Audio" can trigger an unsupported function error. 3. Update Firmware and Software
Compatibility issues between old firmware and new client software can lead to "not supported" flags.
Firmware Update: Check for the latest firmware on the Hikvision Support Portal. You can also use the "Online Upgrade" feature within iVMS-4200 under Device Management > Device.
Software Reinstall: Ensure you are using the latest version of iVMS-4200 to ensure all SDK libraries (including HCNetSDK.dll) are up to date. 4. Reset to Factory Defaults
If the error persists after verifying hardware support, a configuration conflict might be the cause. Access the camera via a web browser using its IP address. Navigate to Configuration > System > Maintenance.
Select Restore to reset all parameters except the IP address to see if the function becomes available.
NAS drive and hikvision camera: Failed to search file - use-IP
The Hikvision error code HCNetSDK.dll[23] indicates that the requested function is not supported by the device or current firmware. This often occurs when using iVMS-4200 or an SDK-based application to perform a task the hardware isn't designed for, such as configuring PTZ on a fixed camera or searching for "Smart Event" playback on a device without Video Content Analysis (VCA). Common Triggers for Error 23
Unsupported Features: Attempting to use PTZ controls on a camera that does not have PTZ capabilities.
VCA Playback: Searching for recording files using "Event" filters on devices (like some NAS drives) that do not support Smart Events or VCA.
Incompatible Stream Settings: Trying to change video parameters (like resolution or frame rate) to values not supported by that specific hardware model.
Firmware Mismatch: The management software (e.g., iVMS-4200) attempting to use a newer protocol or command that an older firmware version does not recognize. Troubleshooting Steps Verify Hardware Capabilities
Check your device's datasheet to ensure it actually supports the feature you are trying to use (e.g., Audio, PTZ, or Smart Detection).
If you are receiving this error while trying to change settings, ensure the camera is not limited by the NVR's maximum supported resolution or bandwidth. Adjust Stream Settings If you are using Hikvision software to connect
In iVMS-4200, go to Device Management > Remote Configuration > Video & Audio.
Ensure the Video Type is set to "Video & Audio" if you are attempting to use sound features.
Try switching from "Main Stream" to "Sub Stream" to see if the error persists, as some functions only work on specific streams. Update Firmware
Download the latest firmware for your specific NVR/Camera model from the Hikvision Download Center.
Applying a firmware update can often add support for commands used by newer versions of iVMS-4200. Use Official Tools for Configuration
If iVMS-4200 fails with Error 23, try configuring the setting directly through the device's web interface (using its IP address in a browser) or via the SADP Tool. Check Playback Filters
When searching for footage, use the "Normal" recording search rather than "Event" or "VCA" if your storage device (like a NAS or basic SD card) doesn't support advanced metadata indexing. Summary Table: Error Code 23 Potential Cause Live View Stream type mismatch Change stream to "Video & Audio". Playback Searching for Events on non-VCA device Search for "Normal" recordings instead. PTZ Control Fixed camera used Verify if camera has physical PTZ motors. Settings Parameter out of range Use lower resolution or frame rate.
Help with DS-KD8003 Door Station and IVMS 4200 : r/Hikvision
Here’s a helpful content piece on the Hikvision error code HCNetSDK.dll 23 verified, aimed at security system installers, IT support staff, and end users troubleshooting this issue.
Based on Hikvision’s official SDK release notes and network trace analysis, the following are confirmed triggers for error 23:
The HCNetSDK.dll is a dynamic link library (DLL) file that is part of the Hikvision SDK (Software Development Kit). This SDK is used for developing software that interacts with Hikvision devices, such as IP cameras, NVRs (Network Video Recorders), and DVRs (Digital Video Recorders). The DLL contains functions that allow developers to integrate Hikvision devices into their applications, enabling features like live video streaming, playback, and device configuration.
Use NET_DVR_SetLogToFile(3, "C:\\SDKLog\\") before login. The generated log file will show the exact step where error 23 occurs.
Example log snippet:
[ERROR] Login failed: error 23
[DEBUG] Sent username: admin
[DEBUG] Device response: Authentication failed