Unplug the power to the camera or NVR, wait 30 seconds, and plug it back in.
If you are a software developer working directly with the Hikvision SDK API and you retrieve the error code via NET_DVR_GetLastError() , the code .
To bypass this error, perform the following troubleshooting procedures sequentially. Step 1: Force Disable H.265 and H.265+ Codecs hcnetsdk.dll 9 hikvision error
The hcnetsdk.dll is the dynamic link library file responsible for the network communication between Hikvision hardware (DVRs, NVRs, Cameras) and software (iVMS-4200, SDK integrations).
In the Hikvision SDK documentation, error code 9 is explicitly defined as NET_DVR_ALREADY_INIT . The SDK is designed to be initialized exactly once per process execution. Triggering the initialization function a second time causes the DLL to reject the command and throw this error. The most common scenarios that trigger this include: Unplug the power to the camera or NVR,
Research and debugging logs indicate four primary triggers for this error:
When an application starts up, it must invoke the SDK initialization function to allocate memory, set up network communication protocols, and prepare the environment for connecting to hardware. The error code 9 specifically points to a logical conflict during this setup phase. Root Causes of Error Code 9 Step 1: Force Disable H
This guide provides a comprehensive deep dive into what this error actually means, its primary root causes, and a step-by-step troubleshooting guide to resolve it permanently. Whether you are a developer using the SDK in a custom application or an IT professional managing Hikvision software like iVMS-4200, this article will help you decode and fix the problem.
The SDK library version bundled with your iVMS-4200 or custom application does not match or support the firmware architecture running on the NVR/DVR.