.CPL File Extension
File TypeWindows Control Panel Item
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
Control panel item, such as Displays, Mouse, Sound, or Networking, used by the Windows operating system; stored in the "Windows\ System" folder and are loaded automatically when the Windows Control Panel is opened.
Since CPL files are referenced by the Windows operating system, they should not be opened manually.