The command does install the feature, this from my test server, though it requires a restart so might need some restart detection so the fixlet doesn’t misreport as failed while the InstallPending state is waiting for the system restart
Relevance
(windows of operating system) and (product type of operating system != nt workstation product type) and (not exists selects "* from Win32_ServerFeature where Name='SNMP Service'" of wmis) and (not pending restart "SMNP-Service")
Action
action uses wow64 redirection false
waithidden powershell.exe -executionpolicy bypass -command "Add-WindowsFeature SNMP-Service | Out-Null"
action requires restart "SMNP-Service"
