Save the commands outlined in red into a .ps1 script file.
Run the script using PowerCLI from the vCenter server. In case of an appliance, run it from any machine that has PowerCLI installed.
$vcserver = "vcenter.domain.com"
$vcusername = "vcenter_admin"
$vcpassword = "password"
Connect-VIServer -Server $vcserver -User $vcusername -Password $vcpassword
$allVMs=Get-VM
foreach ($vm in $allVMs) { if ($vm.ExtensionData.Runtime.ConnectionState -eq "orphaned") {$vm | Remove-VM}
}
If you get an error about the Remove-VM method being disabled by horizon.daas, you will first need to unprotect folders in vCenter. To do that run the following command using PowerCLI on the Horizon Connection Broker.
IcUnprotect.cmd -vc hostname_or_IP_address -uid user_ID -password password [-clusterId cluster_ID] [-includeFolders]
Once folders have been unprotected, re-run the original script.
