An organisation administrator can create a Customized OS Template which can be used for instantiating remote desktops. This is useful as well to activate your own license on your OS.
These steps are essential to create an image successfully. Tread carefully.
Windows
1. Install "Red Hat VirtIO SCSI pass-through controller
When asked about "Where do you want to install Windows?". Click "Load drivers", then select the right driver accordingly. After that, you will see the storage drive.
2. Initial Setup
Click I don't have internet when asked "Let's connect you to a network"
Click Continue with limited setup when asked "There's more to discover..."
Any username but no password
3. Install Virtio-win to enable internet
Once machine started and you are logged in, go to the CD Drive E and install virtio-win-gt-x64, click next and OK to finish installation.
4. Disable Hibernate
Open "Command Prompt" by right click "Run as administrator", type in "powercfg.exe /hibernate off" and enter
5. Install spice-vdagent to support qemu vnc clipboard
6. Install and configure Tightvnc to allow proper VNC connection
Go to https://www.tightvnc.com/download.php to download TightVNC for Windows installer.
Install it. Disable authentication upon finishing installation.
Open "TightVNC service configuration" and configure it
7. Shutdown your Windows properly
Click bottom left corner Windows icon -> Power -> Shutdown