There is a conflict between the software version and the firmware version. Common Scenarios for Error Code 23
Trying to enable VCA features (line crossing, intrusion detection) on a device that doesn't have the VCA analytics engine onboard will cause this error. 4. iVMS-4200 PC-NVR Event Recording
to ensure a more stable handshake between the software and the device. Quick Summary Table Likely Cause Recommended Action Incompatible Feature Confirm your camera supports the feature (e.g., PTZ, VCA). Stream Mismatch Switch to "Sub Stream" or "Auto-Change Stream". Software Bug hikvision error code hcnetsdkdll 23 better
In plain English: Your software thinks it’s connected to the device, but the internal session ID (handle) is either expired, incorrect, or was never properly created.
In Hikvision’s SDK (HCNetSDK.dll), error codes are returned by functions like NET_DVR_Login_V40() . Code is defined as: There is a conflict between the software version
NET_DVR_NETWORK_ERR_TIMEOUT — Network connection timeout.
"Mrs. Gable," Elias said, his voice dropping to a whisper. "Do you have any IoT devices on this network? Smart lights? A thermostat?" iVMS-4200 PC-NVR Event Recording to ensure a more
lUserID = NET_DVR_Login_V40(...) if lUserID < 0: error = NET_DVR_GetLastError() # handle error (23 won't appear here on login) else: # now use lUserID for other operations
Restart the NVR/DVR to clear temporary connection or memory issues.
First, ensure the feature you are trying to use is actually built into your camera or NVR. For example, if you get this error while trying to zoom, check if the camera is a fixed lens motorized varifocal
In limited scenarios, configuring specialized smart analytics over channels via basic Operator or Guest profiles can result in parameter failures. NAS drive and hikvision camera: Failed to search file