Если знаете букву, на которую начинается нужное расширение - выберите ее.

.DESKTHEMEPACK расширение

Расширение формат файла «.deskthemepack»
Тип файла Windows 8 Desktop Theme Pack File
Разработчик Microsoft
Категория Системные файлы

Описание формата файла

System theme file introduced with the Windows 8 operating system; saved in the .CAB format and contains a background image (e.g., a .JPG file) as well as a .THEME file, which contains colors, sounds, and other settings used to customize the Windows desktop; used for sharing desktop themes with other Windows users.

Downloaded DESKTHEMEPACK files can be installed by double-clicking them. They can be created by right-clicking one of "My Themes" in the Windows Personalization Control Panel and selecting "Save theme for sharing."

NOTE: DESKTHEMEPACK files are similar to .THEMEPACK files used by Windows 7.

Программы, которыми можно открыть файл .DESKTHEMEPACK