Hikvision error code HCNetSDK.dll[23], indicating "Not supported," typically arises in iVMS-4200 when attempting to use features, such as smart event search, on incompatible hardware. Troubleshooting steps include switching to the main stream, verifying admin permissions, adjusting encoding parameters, and confirming hardware VCA capabilities. For a detailed guide on troubleshooting Hikvision live view errors, visit Hikvision. How to Solve Live View Error on iVMS-4200 - FAQ - Hikvision
In 2019, Hikvision upgraded its SDK encryption from weak to strong. If your software (iVMS-4200 v2.x) is older than your camera firmware (v5.5.0+), the DLL sends an unencrypted password, but the camera expects an encrypted one. The camera throws Error 23 because the handshake fails, even though the password string is identical.
: For developers, this error occurs if an API command (e.g., NET_DVR_GET_IPPARACFG_V40
Elias froze. The logic of HCNetSDK.dll settled in his mind like a heavy stone. The Hikvision SDK (System Development Kit) manages the handshake between the software and the hardware. Error 23 wasn't just a "wrong password" prompt. It was a specific, low-level refusal from the camera's OS.
