Every structure you pass to any NET_DVR_* function must have its dwSize member set to the structure’s byte size before the call.
[DllImport("hcnetsdk.dll")] private static extern uint NET_DVR_GetLastError(); hcnetsdk.dll 9 hikvision error
Unlike simple "Wrong Password" errors, Error 9 is a phantom. It usually happens when the software (iVMS-4200) and the camera/NVR are technically talking, but they can't agree on how fast to exchange information. Dicsan Technology The Version Gap: Every structure you pass to any NET_DVR_* function
: Attempting to pull a "Main Stream" when the network or NVR bandwidth only supports "Sub Stream". Step-by-Step Troubleshooting Guide 1. Verify Network Health Dicsan Technology The Version Gap: : Attempting to
: Ensure you are logged in with an admin account . If using a limited user account, check that "Remote Live View" and playback permissions are explicitly assigned in the device's User Management settings.
If the network is congested, the system may fail to receive the heavy "Main Stream" data.