Hi @Rising Flight ,
Welcome to Q&A forum!
Which versions of Windows server do you want to install Office 2019 on?
Please note that Office Professional Plus 2019 only supports the following operating systems.
For more information, please refer to: System requirements for Office.
i remember i have installed Office Professional Plus 2019 couple of months
< How did you install Office Professional Plus 2019?
The installation method of Office Professional Plus 2016 is MSI, which requires users to download the installation package from VLSC for deployment and installation.
The installation method of Office Professional Plus 2019 is C2R, which generally uses the Office Deployment Tool(ODT) for deployment and installation.
For more information, please refer to: Deploy Office 2019 (for IT Pros).
However, their activation methods are similar. Both can be activated using KMS or MAK.
For more information, please refer to: Overview of volume activation of Office.
Hope the information could help you.
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