VMConnect Enhanced Mode - RDP over VMBUS

This feature enables high fidelity RDP sessions to virtual guests over the VM bus.

Better audio, clipboard (copy/paste from host to guest), USB redirection and enhanced graphics with no requirement for the virtual guest having network connectivity.

The requirement is Hyper-V 2012 R2 as the host and Windows 8.1 or Windows Server 2012 R2 as the guest.

Open Hyper-V Manager; Select Hyper-V Settings …

Enable Enhanced Session Mode Policy and Enhanced Session Mode.

Edit the guest settings / Integration Services and enable”Guest Services”

You must reboot the guest for this change to take effect. When the guest has rebooted open the guest in the Hyper-V console and you should now see the following;

FAQ

Q) Will this feature work with Windows prior to 8.1?
A) No. A Windows 8.1, Server 2012R2 or later OS guest is required.

Q) Does this feature work on Gen1 VM's?
A) Yes. This feature works on both Gen1 and Gen2 VM's.

Q) Does this feature require integration services?
A) Windows 8.1 includes integration services, but this feature does not require them to be enabled in the guest configuration options.

Q) Does the guest OS need to be configured to accept RDP connections?
A) No. This feature will work even if the guest is configured for "Don't allow remote connections to this computer".

Q) Are there any user requirements on the guest?
A) Yes. Enhanced sessions are only available when logging into the guest as a member of the local Administrators group or the Remote Desktop Users group.  Additionally, the guest OS must support Remote Desktop sessions.  (e.g Pro or Enterprise editions of Windows 8.1 are supported but the Home editions will not work.)

Q) Is this feature compatible with RemoteFX-enabled guests?
A) No. This feature is not available on guests with RemoteFX adapters.

Q) Should I expect this feature work on the first boot of the guest OS?
A) No. The guest OS should be rebooted at least once to complete OOBE setup.

More information can be found here;