User Configuration\Administrative Templates\System
Disables the Autoplay feature.
Autoplay begins reading from a drive as soon as you insert media in the drive. As a result, the setup file of programs and the music on audio media starts immediately.
By default, Autoplay is disabled on removable drives, such as the floppy disk drive (but not the CD-ROM drive), and on network drives.
If you enable this policy, you can also disable Autoplay on CD-ROM drives, or disable Autoplay on all drives.
This policy disables Autoplay on additional types of drives. You cannot use this policy to enable Autoplay on drives on which it is disabled by default.
This policy appears in the Computer Configuration and User Configuration folders. If both policies are configured, the setting in Computer Configuration takes precedence over the setting in User Configuration.