Restrict CD-ROM access to locally logged-on user only

Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options

Description

Determines whether a CD-ROM is accessible to both local and remote users simultaneously.

If enabled, this policy allows only the interactively logged-on user to access removable CD-ROM media. If no one is logged on interactively, the CD-ROM may be shared over the network.

If this policy is disabled, then the local user and remote users can access the CD-ROM simultaneously.