The trial is fully functional for 180 days. After that, it will begin shutting down every hour. You cannot "convert" a trial to a full license without a reinstall, but you can re-arm the trial up to three times (slmgr /rearm) if you need more lab time.
Windows Server 2019 is a high-performance operating system designed to bridge on-premises environments with Azure services, enabling seamless hybrid cloud scenarios. Whether you are setting up a lab environment or preparing for a production rollout, obtaining the correct ISO is the first critical step. Official Download Options windows server iso 2019 download
John knew that he needed to download the Windows Server 2019 ISO file to create a bootable installation media. He quickly typed "windows server iso 2019 download" in his browser's search bar and clicked on the first result. The trial is fully functional for 180 days