Users may need to clarify if running the vCenter Server GUI installer for vSphere 9.0 and 9.1 is supported on a Windows Server 2019 environment.System Requirements for the vCenter Installer
VMware vCenter Server 9.0 / 9.1
Windows Server 2019
Windows Server 2019 is not included in the system requirements for running the vSphere 9.x vCenter Server GUI installer.
Starting with vSphere 9.0 and 9.1, the following operating systems are supported for the GUI installer, and Windows Server 2019 is no longer included:
Windows 11
Windows Server 2022
Windows Server 2025
SUSE 15.6
Ubuntu 22.04, 24.04
macOS 13, 14, 15
When running the GUI installer, please use one of the supported operating systems that meet the requirements above.