Are you trying to reset a or a recorder (NVR/XVR) ? Do you have access to the original email used for setup? What is the approximate age of the device?
This is where most guides fail. You cannot reset the password without Dahua's backend server.
Turn over your NVR/DVR or inspect the casing of your IP camera. Look for a white manufacturer sticker. Locate the barcode labeled or Serial No. Copy the alphanumeric string exactly as printed. Method B: Use the ConfigTool Software
To reset a Dahua password using a serial number (S/N), you generally need to obtain a from Dahua support or use an authorized password generator . Method 1: Dahua Support (Official) dahua password reset by serial number
Return to your Dahua login interface (monitor or web browser).
Your device is likely running older firmware. You must update your firmware after using the distributor method to gain access to future app-based resets.
Method 1: Dahua Password Reset Using Serial Number and Date (Legacy/Local Method) Are you trying to reset a or a recorder (NVR/XVR)
If your device is older and does not feature a QR code option, you will need manual assistance. Copy your full serial number and the exact system date.
Unlocking Your Security: Dahua Password Reset by Serial Number
Do you have the installed on a computer? This is where most guides fail
You will receive a master string or an validation .xml file back via email. Import this file or enter the string into ConfigTool to unlock the device.
Input the Date shown on your Dahua device's login screen and the Serial Number into the tool.
Download and install the official on your computer.