Error code 17 happens when you are trying to connect the HikVision CCTV Camera / IP Camera / DVR / NVR using mobile app iVMS-4500, or computer software iVMS-4200.  Most of the time, it happens suddenly. However your configurations remains unchanged.  You suddenly receive this error code 17:

NET_DVR_PARAMETER_ERROR: Parameter error. Input or output parameter in the SDK API is NULL.

When you see this error code do not panic!  “Error Code 17” means the internet connection with your CCTV system is having issues.
Which means that your mobile phone or computer couldn’t communicate with the server, which is the IP Camera, or DVR, or NVR, due to the parameter error in the configuration.  The recording is still working fine and you won’t lose any important video records.

So what has caused the error?
In a little detail, “Error Code 17” often means the IP address of your CCTV devices (IP Camera, DVR, NVR) can’t be resolved correctly, for whatever possible reasons.
We have provided a premium DDNS service which is used to capture your home router’s real-time IP address.
If there is any issue (e.g router issue, ISP’s service failure, etc) disrupting the communication between the DDNS resolving and the IP refreshing from your router,  you will see this error code 17. 

To solve this problem, you need to instruct your CCTV system to resend your current IP address. So what you need to do is to simply restart your CCTV Camera by shutting it down and turning it back on  The CCTV system will refresh your IP address, which should usually resolve the issue.

If you have restarted your CCTV DVR / NVR / IP Camera a few times, but still seeing “error code 17”, please follow the instructions here to get our remote support.

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