Note: this material is excepted from Planning for Hyper-V Security at
All folders containing VHD, VHDX, AVHD, AVHDX, VSV and ISO files
Default virtual machine configuration directory, if used C:\ProgramData\Microsoft\Windows\Hyper-V
Default snapshot files directory, if used %systemdrive%\ProgramData\Microsoft\Windows\Hyper-V\Snapshots
Custom virtual machine configuration directories, if applicable
Virtual machine virtual hard disk files directory. By default, it is C:\Users\Public\Documents\Hyper-V\Virtual Hard Disks.
Custom virtual hard disk drive directories
Snapshot files directory. By default, it is %systemdrive%\ProgramData\Microsoft\Windows\Hyper-V\Snapshots.
Vmms.exe (Note: May need to be configured as process exclusions within the antivirus software)
Vmwp.exe (Note: May need to be configured as process exclusions within the antivirus software)
Additionally, when you use Cluster Shared Volumes, exclude the CSV path
C:\ClusterStorage and all its subdirectories.