Check the network connection: Make sure that the network connection between the camera and the video recorder is normal. Check whether the network is stable and whether there is a firewall or other network equipment blocking communication.
Confirm IP address: confirm that the camera and video recorder are on the same network segment, and confirm that the IP address is correct. If the camera and video recorder are not in the same network segment, you can try to set the IP address of the camera or video recorder manually.
Confirm port number: Confirm that the video recorder is using the correct port number. The default port number of Hikvision camera is 8000, but if it has been changed, you need to confirm that the video recorder uses the correct port number.
Confirm user name and password: If the camera has enabled user name and password verification, please ensure that the video recorder uses the correct user name and password.
Reinstall the driver: If the above steps can't solve the problem, you can try to reinstall the driver of Hikvision camera. You can download the latest version of the driver from official website and follow the prompts to install it.
Check the equipment status: check whether the camera works normally in the equipment manager. If there are no errors or warnings, there is nothing wrong with the camera itself.
If the above steps cannot solve the problem, it is recommended that you contact Hikvision customer service or technical support team for further help and support.