The Business Central team is happy to confirm that you can deploy Business Central on-premises on servers running Windows Server 2019. The system requirements have been updated accordingly. Windows Server 2019 was released in October 2018 with many new and interesting capabilities. For further information, please take a look at the What’s New information at this location: https://docs.microsoft.com/en-us/windows-server/get-started-19/whats-new-19. Over the last few months, the Dynamics SMB team has been testing compatibility with this new version of Windows Server, and we are now proud to announce compatibility. For a full list of minimum requirements for Business Central, see the System Requirements for Dynamics 365 Business Central On-premises.