windows server

Hyper-V and VirtualBox in Windows Server 2022 Standard 

To make VirtualBox compatible with Hyper-V, you need to activate "windows hypervisor platform". 

In most windows OS versions, this is a feature you turn on by using "Turn windows features on or off".

However,the feature "windows hypervisor platform" is missing on  the Windows Server 2022 Standard manager UI!

Solution:

1. Open a CMD as an administrator

2. Write command Dism /Online /Enable-Feature:HypervisorPlatform

Credit: https://www.impostr-labs.com/use-hyper-v-and-virtualbox-together-on-server-2019/