This is the most common and official method, especially for NVRs and DVRs. It works even if you didn't set up any password recovery options.
If your device shows a on the "Forgot Password" screen, this is often faster than a manual serial number request: Open the DMSS App on your phone. Navigate to Me > Tool Manager > Password Resetting . Scan the QR code on your DVR/NVR monitor.
: Take note of the current date and time displayed on the device's screen (OSD), as the security code is date-dependent. dahua password reset by serial number
Select the to QR Code . A QR code containing your serial number data will appear. Download and open the DMSS app on your smartphone.
If you still have some access (e.g., you forgot the password but the device is on the network): This is the most common and official method,
: Find the full device serial number and the current date/time displayed on the device's screen (OSD). The serial number is usually on a sticker on the back or bottom of the hardware.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Navigate to Me > Tool Manager > Password Resetting
If you encounter issues during the password reset process:
Email the saved XML file to the appropriate Dahua technical support address. The exact email address may vary by region; common addresses include support@dahuasecurity.com or your local distributor’s support email. The support team will process the file and return a signed XML file that can reset the password. (Note: Some distributors provide a self‑service portal for XML file processing.)
If the generated super password does not work, check the following:
If you lose both the password and the ability to read the serial number (e.g., faded label, no network access), professional repair or device replacement may be the only solution.