Let’s say your OEM licensed server comes pre-installed with Windows 2022 Standard.
You want to install a Virtual Server and activate it with the same license. -You can activate 2 VMs on a Standard license.
First download the ISO Windows server 2022 Evaltuation edition from https://www.microsoft.com/en-us/evalcenter/
Install the VM using the ISO file. It will install as a 180 days trial -an evaluation edition.
The fact will show in settings-activation and on the desktop similar to
Sooner -rather than later, you will prefer to change this from Evaluation to Standard edtition
This can be done by entering the following dism command from an elevated powershell prompt:
dism /online /set-edition:ServerStandard /productkey:enter-your-OEM-product-key /accepteula
The command will require a restart.
After reboot you will see that the server is activated and the Evaluation has changed to Standard editition.
Happy OEM licensing!