The device communication library ( HCNetSDK.dll ) attempted to execute a command that the end-device returned as "not supported". Common Triggers
Consult the Hikvision Datasheet Library for your specific model to ensure it supports the feature (e.g., PTZ, Audio, VCA) you are trying to use.
The "Function Not Supported" error usually surfaces in these scenarios:
A frequent culprit occurs when changing recording templates to "Event" or executing a smart playback search on a network-attached storage (NAS) drive. Standard NAS systems lack built-in capabilities. If you use iVMS-4200 PC-NVR storage server software and attempt to filter by smart events on unsupported hardware, the application will display HCNetSDK.dll 23. 2. Unsupported Video Parameters (Resolution & Framerates) hikvision error code hcnetsdkdll 23 verified
In Hikvision’s SDK framework:
: Running an updated version of iVMS-4200 alongside outdated device firmware can result in the software querying new, unsupported API functions.
The is a formal system notification indicating that the requested operation or function is not supported by the connected device . It stems directly from Hikvision’s core network communication library, specifically mapped to the macro NET_DVR_NOSUPPORT . The device communication library ( HCNetSDK
The HCNetSDK.dll file acts as the primary translator between your PC software and your physical Hikvision devices. When the software sends a command that the underlying hardware does not understand, the library returns the exact error code: NET_DVR_NOSUPPORT 23 . The error frequently triggers during three scenarios:
Select to reset all parameters except the IP address to see if the function becomes available.
A: Indirectly. A firewall blocking port 8000 TCP will cause "Network Error" or "Timeout," not specifically "Verified failed." However, a firewall performing deep packet inspection (DPI) can corrupt the authentication packet, resulting in Error 23. Temporarily disable DPI for the surveillance VLAN. Standard NAS systems lack built-in capabilities
If the network is unstable, packets are lost, leading to error 23.
Firmware updates, capability matching, proper storage server scoping Primary Root Causes of HCNetSDK.dll 23 1. Invalid Storage Server Recording Templates
NET_DVR_GetLastError();
: A value (such as an IP address, port, or channel number) is outside the allowed boundaries for that device. [1] Verified Solutions Initialize Structure Sizes : If coding, ensure you call
In Hikvision systems (such as iVMS-4200 or custom SDK applications), indicates that the requested function is not supported by the connected device . This usually occurs when a software feature is triggered that the hardware—such as a specific camera or NVR model—physically lacks or does not have the firmware capability to perform. Core Identification Error Message: NET_DVR_NOSUPPORT Code Number: 23