Dahua DH-XVR5416L-X User Manual page 328

Step 4 Follow the onscreen instructions to scan the QR code and get the security code.
You can get the security code twice by scanning the same QR code. If you need to

get the security code once again, please refresh the interface.
Please use the security code received in your email box to reset the password

within 24 hours; otherwise the security code becomes invalid.
Wrong security code entrance up to five times will cause the security code locked

for five minutes. After five minutes, you can continue to use this security code.
Step 5 In the Security code box, enter the security code received in your reserved email box.
Step 6 Click Next.
The new password resetting interface is displayed. See Figure 6-5
Figure 6-4
Web Operations 312