In technical terms, the Hikvision error code HCNetSDK.dll 23 simply means "Function not supported". The Phantom Feature
Error 23 is rarely a simple typo.
In 80% of real cases, it’s either:
The "Better" Solution:
Need the official HCNetSDK.dll error code list? Download the Hikvision SDK Documentation from the Hikvision Partner Portal (requires login).