Find the S/N on the physical sticker at the back of your NVR, DVR, or camera. You can also find it on the login screen of newer firmware or within the web interface under System Info.
This article will walk you through everything you need to know about this process, from locating the serial number to using the official Dahua ConfigTool and web interfaces to regain access without losing your recorded footage. dahua password reset by serial number
If the serial number method isn't working for your specific model, consider these faster alternatives: Find the S/N on the physical sticker at