In the webinterface you can install the following operating systems:<br />
Arch Linux latest minimalCentOS 7. 8 minimalCentOS 8. 2 minimalDebian 10. 4 LAMPDebian 10. 4 minimalDebian 9. 12 minimalUbuntu 16. 04. 5 LTS minimalUbuntu 18. 04. 4 LTS minimalUbuntu 18. 04. 4 LTS NextcloudUbuntu 20. 04 LTS minimalWindows Server 2016Windows Server 2019<br />
With the rescue system proxmox can also get installed.  Please make sure, that your processor is able to command virtualization.  You can get further information from our support.