So... this was a difficult one to figure out! You may be better off using Windows Subsystem for Linux + Bash + Virt-Manager if you can get it, but it wasn't available for my version of Windows (LTSB).
The short version of the story is:
- Install CygWin w/ virt-manager, xinit and openssh
Configure PWDless SSH via RSA Key to KVM Host
Note: If you place your private key inside ~/.ssh/id_rsa and make sure permissions are the following SSH will automatically try using the Private Key. To create the directory .ssh with proper permissions and create the "known_hosts" file, I ususally SSH into KVM Host and accept the host-key fingerprint manually. Then move over the Private Key and test ssh'ing into KVM Host. It shouldn't ask you for your password and just auto-login.
Default Username is "YouLoginName" and in windows, you can copy the file manually to the default location via
Create Shortcut on Desktop: (This is the contents of my .cmd)