SystemEDGE isnot officially supported to run on Windows Server 2019.
SystemEDGE 5.9 will however install and respond to SNMP Requests on Windows Server 2019.
Discovering a SystemEDGE host which is running on Windows Server 2019 within VAIM it will be detected as WINNT\Windows 2012 Server.
After VAIM discovery Windows Server 2019 is being classified as WINNT and this is enough for the purpose of Windows template application.
We can only provide "best-effort" level support for Windows Server 2019, meaning engineering involvement is subject to the discretion of Level 1 support.