For vServers (OpenVZ), we provide the following operating systems (64 Bit):<br />
Ubuntu 18. 10, 19. 10, 20. 04<br />
Debian 9. 9, 10. 2, Debian 11. 0<br />
CentOS 6, 7<br />
Fedora 22, 23<br />
You cannot run and/or install a Windows operating system on our vServers.  As an alternative, you can use the Linux package WINE, for example. <br />
For KVM vServers, we provide the following installation templates:<br />
Ubuntu 19. 10, 20. 04<br />
Debian 10. 0, Debian 11<br />
CentOS 7. 6<br />
Fedora 27<br />
Windows Server 2019<br />
In addition, you can always install Windows Server 2019.  It is also possible to switch to a Linux operating system later free of charge. <br />
Attention: When reinstalling the operating system, all data will be lost permanently!