You might have found in Hyper-V, there is no direct way to share files from the host machine to the virtualized guest environment. This can be frustrating. Follow the link below and reference my screen shots to learn how to get VHD (virtual hard disk) to connect to the Internet and file share.
Start with this helpful link: Share Files and Folders and Internet between Guest OS and the Host in Hyper-V
To get my file share to work, I had to use IP: