There are a couple of ways you can reset the password on your Hikvision device. However, the simplest and most reliable method (which works for all Hikvision devices) is to use Hikivsion SADP Tool:
Download the latest version Hikvision SADP Tool
Ensure that your device is connected to your LAN
Open SADP Tool and click 'Search'
Select the device and click Forget Password
You might then see one of the following three pop-up windows.
1) If the pop-up requires a security code, please turn to method A.
2) If the pop-up requires encrypt file, please turn to method B.
3) If the pop-up requires encrypt file or key, please turn to method C.
Copy the Start Time and Device Serial No and send them to HIKVISION technical Support team., who will issue you with a security code. Use to code to reset your password to '12345'.
Click Export to save XML file, send the XML file to HIKVISION technical support team.
HIKVISION technical support team will return encrypt file or forward your request to local distributor. Choose the path of the encrypt file, input your new password and confirm, click Confirm and your password will be reset.
Take a photo of QR code and send it to HIKVISION technical support team.
HIKVISION technical support team will return key which consists of number and letter (8 bytes) or forward your request to local distributor.