The UPD file extension is associated with the ProUpdater a backup and synchronization program for Microsoft Windows operating system that allows users to protect their data. The .upd file stores options settings.
Text file containing information about a specific program update; sometimes included with a software update installer; similar to a README file or other basic text (.TXT) file.
The UPD file extension is associated with Ulead Photo Express for Microsoft Windows and other software developed by the Ulead. The .upd file stores private data used for internal purposes of Ulead applications. Ulead was acquired by the Corel.