The appliance template is just a configuration file. You will still need the actual Windows disk image (.vmdk or .qcow2). GNS3 often links to Microsoft's Free VM Downloads, which provide 90-day trial versions of Windows 10 and 11. 2. System Requirements
You can download the windows.gns3a or windows-server.gns3a template directly from the GNS3 Windows Appliance page . gns3 windows appliance download
Follow these steps to import and set up your Windows appliance: The appliance template is just a configuration file