The .DESKTHEMEPACK extension refers to files of the type, windows 8 desktop theme pack files. These are the customization configuration files that store the user's personalization options.

Windows theme pack files allow the user's to get a custom user experience of using the windows 8 operating systems. The desktop theme pack files allow a lot of customizations like wallpapers, screensavers, desktop gadgets and sound customizations that the users can personalize. This file has replaced the earlier themepack files used for Windows 7. The limitation of the windows 8 desktop theme pack file is that it does not support backwards compatibility.