Load Extra.DAT page Download the Extra.DAT file, then use Endpoint Security Client to load it. Adaptive Threat Protection supports using only one Extra.DAT file at a time. In a situation where you need both a negative Extra.DAT file and a positive Extra.DAT file for Threat Prevention, you can request a combined file from McAfee Labs. Table 1: Options Option Definition Browse Navigates to the location where you downloaded the Extra.DAT file. Apply Applies the new Extra.DAT file to the system.