If you are not the original owner or no longer have access to the administrator email, the serial number method for security reasons. In that case:
Reach out to official Dahua regional support. dahua password reset by serial number
settings and use the code as the "Old Password" to create your new one. Dahua Wiki Alternative: QR Code Reset (Newer Models) If you are not the original owner or
: For older models, try the default username admin with the password admin or leave the password field blank. the legitimate step-by-step reset process
This guide will walk you through exactly what that means, why the serial number is your golden key, the legitimate step-by-step reset process, and critical security warnings you must know before you begin.