Enhanced Session Mode Policy allows additional actions in interaction with virtual machines, such as clipboard features (cutting and pasting), volume and device mapping,
and audio redirection. Enhanced Session Mode needs to be enabled to provide support for guest virtual machines running Windows Server 2016, Windows Server 2012 R2, Windows 10, and Windows 8.1

To enable Enhanced Session Mode from the Hyper-V Manager, open the Hyper-V settings and click on the Enhanced Session Mode Policy. Click the Allow enhanced session mode setting checkbox: