Windows Server 2019 must not have Simple TCP/IP Services installed.

Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authentication or encryption or may provide unauthorized access to the system.

Open "PowerShell".

Enter "Get-WindowsFeature | Where Name -eq Simple-TCPIP".

If "Installed State" is "Installed", this is a finding.

An Installed State of "Available" or "Removed" is not a finding.

Uninstall the "Simple TCP/IP Services" feature.

Start "Server Manager".

Select the server with the feature.

Scroll down to "ROLES AND FEATURES" in the right pane.

Select "Remove Roles and Features" from the drop-down "TASKS" list.

Select the appropriate server on the "Server Selection" page and click "Next".

Deselect "Simple TCP/IP Services" on the "Features" page.

Click "Next" and "Remove" as prompted.