Dahua devices have a built-in security feature called the "Lock" or "Reset" function. If you enter an incorrect password multiple times (usually 5 times), the device locks you out for a specific duration. To bypass this without losing data, you can use the device's unique Serial Number to generate a temporary reset code.
The Login Screen: On newer systems, clicking "Forgot Password" will often display the S/N directly on the screen, often next to a QR code. dahua password reset by serial number
If your device says "Amcrest" or "Lorex," the password reset process changes slightly: To bypass this without losing data, you can
The Current Date: The date shown on the monitor connected to your Dahua device (this is crucial as the reset code is often date-dependent). Method 1: Using the DMSS Mobile App (Easiest) Method 1: Using the DMSS Mobile App (Easiest) 8
Once you regain access, immediately:
Download a Generator: There are mobile and desktop apps like the CCTV Super Password generator.