When issues arise during scanning in the Unity Client, the LowTwainMode setting can be used in troubleshooting.
When enabled, this setting allows the following scanner settings to be saved at the local workstation level: Duplex, auto feed, color format, brightness, contrast, paper size, orientation, rotation, threshold, xres, and yres. Other settings are retained only for the duration of the scan session.
When LowTwainMode is disabled, the Unity Client attempts to configure all scanner settings at once.
To enable LowTwainMode, add the following to the appSettings section of the Unity Client configuration file:
<add key="lowTwainMode" value="true" />
To disable this setting, change the lowTwainMode key's value to false.
Once LowTwainMode is enabled, it will only take effect on newly created scan formats. Existing scan formats must be recreated to exhibit the LowTwainMode behavior.