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Knowledge Base

Knowledge Base

Firmware is not being accepted when using USB t...

The usual cause of firmware not being accepted when using a thumb drive is that the .bin file is not located in the root of the drive (main directory) and...

Error message when updating firmware using the ...

Error messages on the Config Tool when doing a firmware update can indicate the following issues: An old version of the Config Tool is being used.  Check our Support page for the...

Video recorder or network IP camera powers on b...

A device that powers on but does not boot (unresponsive), usually indicates a software issue that can be corrected by doing a hardware level firmware flash (NCOM).  Please return the...

DH-BVL-797W camera's IRs are not working at night

The DH-BVL-797W is a license plate capture camera and has a dual day and night mode for shutter speed variation.  The day/night modes are configured by using dip switches located...

Third party compatibility issues with DH Vision...

Compatibility issues can occur when using third party video recorders and network cameras with Dahua OEM products, however it is typically rare with analog products.  Download the current support list here...

The account has been locked

On a video recorder, after multiple unsuccessful log-in attempts, the account will be locked.  Please restart the device and enter in the correct log-in information. If the log-in information doesn't...