The email must be sent from a certified email address that has been registered with Dahua's channel training platform.
For very old models, try the default credentials (e.g., admin / admin , admin / 123456 , or admin / 888888 ). Summary Checklist Recommended Method Old System (pre-2017) Super Password Generator (Serial + Date) New System (post-2018) XML File Export/Import via ConfigTool Physical Access Physical Reset Button on Board
Click Modify next to the Admin Username, check the box for "Modify Password," and enter the same support code in the Old Password field.
Use your phone's camera to scan the QR code displayed on your DVR/NVR monitor or in the ConfigTool interface.
The tool will now generate an (usually a .txt or .xml file) or a 24-character Security Code . Save this file to your desktop. dahua password reset by serial number
Once you reset your password using the serial number method, avoid doing it again:
Enter the security code in the DMSS app when prompted, then click "Next".
Most Dahua IP cameras and some recorders are designed with a tiny physical reset button. This is a hardware-based method that will wipe the device clean, returning it to factory default settings.
This approach ensures security while providing a legitimate path for password recovery. The serial number is typically printed on a physical label attached to the device itself, and it can also be found within the device's interface if you still have access. For recorders, the serial number format often includes a prefix that indicates the device series—for example, models with serial numbers starting with 7 or higher generally feature a reset button on the mainboard. The email must be sent from a certified
Choose "Device Password Management" and use your phone's camera to scan the QR code displayed on the device screen.
Stuck Outside? How to Reset Your Dahua Password Using Your Serial Number
Choose a location on your computer to save the ExportFile.xml file. Do not modify the filename—leave it as the default. Click "Next" to generate the file.
The super password algorithm relies heavily on time synchronization. The temporary password is only valid for the specific date currently set on your Dahua machine. Use your phone's camera to scan the QR
| Error | Cause | Solution | |-------|-------|----------| | “Serial number mismatch” | You entered the wrong S/N or device was tampered with | Re-check label; try scanning QR code on device. | | “Reset code invalid” | The generated code doesn’t match timestamp or device’s internal clock | Sync device time via NTP before reset attempt. | | “Security code expired” | Some devices generate a code valid for only 300 seconds | Repeat the process faster. | | “Email not registered” | No email was ever set in device | Must use serial + support ticket method. | | “Firmware too old” | Pre-2015 firmware may lock out permanently | Need physical reset or firmware reflash. |
Let's dive into the details of each method.
To reset a Dahua password using the device's serial number (S/N), you can generally follow one of two paths: 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.
For older firmware (pre-2017 or specific versions), there are third-party tools that can generate a "Super Password" based on your S/N.