I have Windows server standard 2019 core server licence "Windows Server (DataCenter Core/Standard Core) version 2004 (released May 2020)" I purchased from Microsoft Partner Center. I have installed Windows server 2019 core Hyper-V using the license key. Then installed Windows server standard 2019 full features and activating with the same key, there was no problem.
Installed the second Windows Server standard 2019 full features using the same ISO, but cannot activate with the same license key. Getting error message "Error: 0xc004F069 On a computer running Microsoft Windows non-core edition, run 'slui.exe 0x2a 0xc004F069' to display the error text'
So is there something I did not understand, where I am going wrong?