To download Server 2019 installation use below links
Essentials English
Windows Server 2019 Essentials .ISO
Standard and Datacenter English
Windows Server 2019 Standard or Datacenter .ISO
To make sure you have the latest version or you want to choose another language.
You can go to https://www.microsoft.com/en-us/evalcenter/evaluate-windows-server-2019-essentials
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