If you are not the original owner or no longer have access to the administrator email, the serial number method will not work for security reasons. In that case:
Resetting a Dahua password by serial number is straightforward – if you are the verified owner with access to the registered email. The process is designed to protect your privacy and prevent unauthorized access. Always go through official tools like ConfigTool or DMSS, and never share your serial number with unverified third parties.
If you continue to have issues, contact Dahua Technical Support directly with your proof of purchase and serial number. They are the only ones who can help when the automated process fails.
Disclaimer: This information is for educational purposes. Device reset procedures may change with firmware updates. Always refer to the latest official Dahua documentation.
To reset a Dahua password by serial number, you can use either a Super Password Generator for older firmware or the official DMSS mobile app for newer systems. How to Find Your Dahua Serial Number (SN)
Before starting, you must locate your device's unique 15-character serial number:
Physical Label: Check the sticker on the underside or rear of your DVR, NVR, or camera.
On-Screen Menu: If you have local access, right-click and go to Main Menu > Setting > Network > P2P. The SN is typically listed here alongside a QR code.
ConfigTool/SmartPSS: If you can access the device via a computer on the same network, tools like Dahua ConfigTool or SmartPSS will display the SN in the device list. Method 1: Reset Using the DMSS Mobile App (Recommended)
For most modern Dahua devices (Firmware v4.0 and newer), the serial number is used via the DMSS app to trigger an email-based reset. YouTube·Hik-Connect Hikvision
Stuck Outside? How to Reset Your Dahua Password Using Your Serial Number
Forgetting the password to your security system is a classic "head-palm" moment. If you’re staring at a locked Dahua DVR or NVR, don’t panic—you probably have everything you need to get back in right on the back of the device.
The Serial Number (S/N) is a powerful tool for recovery, especially for older firmware or when you haven't set up security questions. Here is a helpful guide on how to use it to regain access. 1. Locate Your Serial Number
Before you can reset anything, you need the unique "fingerprint" of your device. You can find the Serial Number in a few places:
The Sticker: Check the bottom or back of your DVR/NVR for a silver or white label. Look for "S/N" followed by a string of letters and numbers.
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.
ConfigTool: If your device is on the network, the Dahua ConfigTool can scan and list the S/Ns of all connected devices. 2. Method A: Contacting Support (Official Path)
The most secure way to reset is to request a temporary code directly from Dahua or your local distributor.
Note the Date: Look at the current date and time displayed on your DVR’s monitor. It must be the date currently set on the device, even if it’s wrong.
Email Support: Send your full Serial Number and the device date to your regional support team (e.g., Support.USA@Dahuatech.com or support@dahuasecurity.com).
Enter the Code: Once you receive the temporary code (usually within 24–48 hours), enter it into the password field on your device to unlock it and set a new password. 3. Method B: Using the "Super Password" Generator
For older firmware (pre-2017 or specific versions), there are third-party tools that can generate a "Super Password" based on your S/N.
How it works: These tools use an algorithm to create a one-time master password based on your S/N and the device's current date.
CCTV Super Password App: Some users use mobile apps like the CCTV Super Password App to generate these codes instantly.
Caution: This method is less reliable on modern, high-security firmware where Dahua has patched universal "master codes." 4. Modern Alternative: The QR Code Method
If you have a newer system, you might not even need to type in your S/N. Click "Forgot Password" on the login screen. Select QR Code as the reset mode.
Open the DMSS mobile app and go to Me > Tool Manager > Device Password Management.
Scan the code on your monitor. A security code will be sent to your pre-registered email address almost instantly. Pro-Tip: Future-Proof Your Access Once you’re back in, don't let this happen again!
Set Security Questions: Go to Main Menu > Account > User and set three questions you'll never forget. dahua password reset by serial number
Bind an Email: Linking a recovery email allows for instant resets via the DMSS app.
Record the S/N: Take a photo of the serial number sticker and keep it in a safe place or a password manager.
Need help finding a local service center? I can help you find a Dahua-certified technician in your area. FAQ/Password Reset Instructions - DahuaWiki
To reset a Dahua password using a serial number (S/N), you typically need to Dahua Technical Support
or an authorized dealer to receive a temporary security code
. This method is often used for older models or as a backup when newer methods like QR code scanning are not configured. Method 1: Emailing Dahua Support (Serial Number Method)
This is the standard procedure for obtaining a manual reset code based on your device's unique S/N. Locate the Serial Number (S/N)
Find it on the physical sticker on the bottom or back of the recorder. Alternatively, go to the login screen and click "Forgot Password" ; the S/N may be displayed there along with a QR code. Contact Support Email your full serial number model number current date/time
shown on the device's On-Screen Display (OSD) to the appropriate regional support email (e.g., Support.USA@Dahuatech.com for North America or support@dahuasecurity.com for global support). Apply the Security Code
Once you receive the temporary code from support, right-click the monitor screen and select Enter the received code into the password field. System > Account and modify the admin password immediately. Recovery Squad Alternative Modern Reset Methods
If your device is newer (roughly 2019 onwards), you can often perform a reset yourself without waiting for an email from support. How To Reset Dahua DVR/NVR Password - Recovery Squad
If your Dahua password reset by serial number fails, check these issues:
| Symptom | Solution |
| :--- | :--- |
| ConfigTool says "Invalid Serial Number" | Triple-check the SN. Do not use letter O if it might be number 0. |
| Support rejects your request | You must prove ownership. Take a photo of the serial sticker next to a handwritten date. |
| Reset code doesn't work | The code is time-sensitive (valid for only 60 seconds). Generate a new export file and request a new code. |
| Device is offline in ConfigTool | Disable Windows Firewall and ensure the device has a static IP on the same subnet (e.g., 192.168.1.x). |
Warning: Resetting device passwords can cause downtime and potential loss of access. Only proceed if you own the device or have authorization.
Step A — Attempt local reset via monitor and mouse
Step B — Generate a reset code (if device shows a reset code)
Step C — Using the “Forgot Password” flow (newer models / Dahua SmartPSS)
If you want, I can:
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To reset a Dahua password using the device's serial number , you typically need to obtain a temporary security code by emailing Dahua support or using the DMSS mobile app to scan a QR code that contains the serial number. Method 1: Emailing Dahua Support (Manual Code)
This method is common for older recorders where you do not have a recovery email pre-set. Gather Device Details: serial number (found on the physical sticker or login screen) and the exact date currently displayed on the recorder's screen. Contact Support: Email these details to your regional support, such as Support.USA@Dahuatech.com support@dahuasecurity.com Enter Security Code:
Once you receive a one-time code, enter it into the password field on the login screen. Set New Password: Immediately go to Main Menu > Account
and change the admin password using the security code as your "old password".
Method 2: Using DMSS App and QR Code (Dynamic Serial Number)
Modern Dahua devices generate a QR code that encodes the serial number and device info for quick resetting. Access Reset Interface: On the login screen, click Forgot Password Generate QR Code: Select the reset mode. A barcode will appear on the screen. Scan with DMSS: on your phone. Navigate to Me > Tool Manager > Password Resetting Scan the QR code on the monitor. Receive Code: A security code will be sent to the recovery email associated with the device. Finalize Reset:
Enter that code into the recorder's prompt to be allowed to set a new password. Method 3: Dahua Config Tool (XML Export) FAQ/Password Reset IPC ConfigTool - DahuaWiki
To reset a Dahua password using a serial number, you can use one of several methods depending on your device's firmware and whether you have access to technical support or specialized tools. Direct Password Reset via Technical Support
The most common way to use a serial number for a reset is by requesting a temporary code from support. Locate the Serial Number: Find the on the sticker at the back or underside of your recorder. If you are not the original owner or
Note the Date: Check the date displayed on the recorder's login screen (OSD). It must match exactly for the code to work.
Contact Support: Email your serial number and the system date to your regional support, such as Dahua Support USA at support.USA@Dahuatech.com.
Enter Temporary Code: Once you receive the code, enter it in the password field on the login screen to gain access and immediately set a new permanent password. QR Code Method (DMSS App)
Modern Dahua devices display a QR code containing the serial number for a faster self-service reset.
To reset a Dahua password using the device's serial number (S/N), you can generally follow one of two paths: contacting technical support for a reset code or using a "Super Password" generator app. Method 1: Contacting Dahua Support (Official) This is the most reliable method for most users.
Locate the Serial Number: 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.
Note the Device Date: On the login screen, note the current date displayed by the device.
Email Support: Send an email to Dahua Support with your device's full serial number and the date shown on the screen.
Enter the Code: Once you receive a temporary code from support, enter it in the password field on your device.
Set a New Password: After gaining access, go to the Account or User settings immediately to create a permanent new password. Method 2: CCTV Super Password Generator
Some third-party tools can generate a temporary unlock code based solely on your serial number.
Download a Generator: There are mobile and desktop apps like the CCTV Super Password generator.
Input Details: Enter your serial number exactly as it appears (case-sensitive) and select your model series.
Try Candidates: The tool will provide several candidate passwords. Try these one by one on your device with the username admin. Alternative: QR Code Reset (Faster if Linked)
If your device is already connected to the internet and linked to an email, the QR code method is typically faster than waiting for support.
Watch how to use the DMSS mobile app to scan a QR code and receive a reset code instantly via email:
Dahua Support will email you back (usually within 2-24 hours) a Reset Code or an XML file. Copy the Reset Code back into ConfigTool, paste it, and create a new password. Click "OK." Your device is now unlocked.
Resetting a Dahua password by serial number is the standard, secure method for modern devices. It is not instant and often requires either a registered email or contacting official support with proof of purchase. The serial number alone does not unlock the device – it serves as the cryptographic key to generate a one-time reset token.
For end users without support contracts, the process can be frustrating. However, community tools exist that reverse-engineer the reset algorithm for non-critical, personal use. Always prioritize the official support channel for commercial installations.
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.
Need official help?
Visit Dahua’s official support portal: https://dahuasecurity.com/support
Regional distributors often have faster password reset services – call them with your serial number ready.
To reset your Dahua password using the device serial number, you must obtain a temporary security code from Dahua Support or a specialized recovery tool. Step-by-Step Reset Guide Locate the Serial Number and Date On the Screen:
Navigate to the login page on your DVR/NVR monitor. Click the Forgot Password
or question mark icon. The serial number (S/N) and the current device date will often be displayed here. On the Device:
Check the physical sticker on the underside or back of the recorder labeled Request a Temporary Password Email Support: Send an email to support@dahuasecurity.com (or your regional support like Support.USA@Dahuatech.com
) including the full serial number, model number, and the exact date shown on the device's screen. Wait for Code:
Dahua support typically responds with a temporary security code within 24–48 hours. Enter the Recovery Code Once you receive the code, return to the on your device.
In the password field for the "admin" account, enter the temporary code exactly as provided (it is case-sensitive). Create a New Password Disclaimer: This information is for educational purposes
After logging in with the temporary code, the system should prompt you to create a new password immediately. If not prompted, navigate to System > Account > User and select for the admin account to set a permanent password. Dahua Wiki Alternative: Using the DMSS Mobile App
If your device is newer and connected to the internet, you can use the for a faster reset: Open the DMSS app and go to Me > Tool Manager > Device Password Management
on your device’s login screen. A security code will be sent instantly to your registered recovery email. Once you regain access, set up Security Questions
in the Account menu to ensure you can reset the password locally next time without needing to contact support. Dahua support office? How to Reset Your Password on a Dahua NVR - CCTV Guru
How to Perform a Dahua Password Reset by Serial Number Forgetting the password to your Dahua DVR, NVR, or IP camera can be a major headache, especially when you need to access critical footage. Fortunately, one of the most reliable ways to regain access is by using the device's serial number.
This guide covers the step-by-step process of resetting your Dahua password using the serial number method, along with alternative solutions if you get stuck. What You’ll Need Before You Start To use the serial number method, you must have: Physical access to the recorder or camera.
The Serial Number (S/N): Found on the sticker on the bottom/side of the device or via the ConfigTool software.
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)
Dahua has integrated a "Forgot Password" feature into their mobile app, DMSS (available on iOS and Android).
Open the Login Screen: On your DVR/NVR monitor, click the "Forgot Password" icon next to the login field.
Select Reset Mode: Choose "SN" or "QR Code" reset. A QR code will appear on the screen. Scan with DMSS: Open the DMSS app on your phone. Go to Home > Me > Toolbox > Device Password Reset. Scan the QR code on your monitor.
Receive Security Code: After scanning, a security code will be sent to the email address linked during the initial setup.
Enter Code: Type the code into the "Security Code" box on your DVR/NVR and create a new password. Method 2: Generating a Master Password via Serial Number
If your device is older and doesn't support QR codes, you may need a "Master Password" generated from the Serial Number and the device's system date. 1. Locate your Serial Number
If the sticker is missing, download the Dahua ConfigTool on your PC. As long as your computer is on the same network as the camera/DVR, the tool will display the Serial Number. 2. Contact Technical Support or Use a Reset Tool
Dahua does not publicize their master-key algorithm for security reasons. To get the reset code:
Contact your Vendor: Send your S/N and the current date (as displayed on the DVR) to the person or company who sold you the equipment.
Dahua Support: Reach out to official Dahua regional support.
CCTV Calculators: Some third-party websites offer "Dahua Password Generators." Use these with caution, as they only work for older firmware versions. Method 3: The Hard Reset (Physical Button)
If you cannot find the serial number or the email reset fails, many Dahua IP cameras and some newer NVRs have a physical reset button.
Locate the Button: On IP cameras, it’s often near the SD card slot. On NVR motherboards, it is a small button labeled "Reset." The Process: Disconnect power. Hold the reset button.
Reconnect power while continuing to hold the button for 20–30 seconds.
The device will revert to factory settings (default username/password is usually admin/admin or will prompt for a new one). Important Tips for the Future
Link an Email: Always link a recovery email during the initial setup to make the DMSS reset process instantaneous.
Export Config Files: Use the ConfigTool to export your system configuration. If you ever reset, you can import your settings back quickly.
Keep Firmware Updated: Newer firmware versions offer better security and more user-friendly recovery options.
Note: If your device was provided by a specific service provider (like a security firm), their custom firmware might disable these reset methods. In that case, you must contact them directly for an unlock code.
If your device says "Amcrest" or "Lorex," the password reset process changes slightly: