Notes about the DUC file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The DUC file type is primarily associated with 'Action Replay' by Datel Ltd.. Action Replay is the brand name of a series of devices created by Datel, primarily used for changing the behavior of video games. Currently, Action Replay is available for the Nintendo GameCube, Game Boy Advance, PlayStation 2, Xbox, Nintendo DS, and PlayStation Portable (PSP). Codejunkies sells the Action Replay hardware. Shuny's Savegames Converter will convert the files to other, perhaps more useful, formats. The DUC file is a newer format; older will have the extension DSS.
Detailed information for file extension DUC:
File classification: GameIdentifying characters
Hex: 41 52 44 53 , ASCII: ARDS
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.