Copy and paste operations are disabled by default for hosts to prevent exposing sensitive data that has been copied to the clipboard.
When copy and paste is enabled on a virtual machine running VMware Tools, you can copy and paste between the guest operating system and remote console. As soon as the console window gains focus, non-privileged users and processes running in the virtual machine can access the clipboard for the virtual machine console. If a user copies sensitive information to the clipboard before using the console, the user—perhaps unknowingly—exposes sensitive data to the virtual machine. To prevent this problem, copy and paste operations for the guest operating system are disabled by default.
It is possible to enable copy and paste operations for virtual machines if necessary.