# Define the username of the provisioning admin account
$ProvisioningAdminUsername = "ek-provadmin"

# Exit if this is a domain controller
If ( $(Get-CimInstance -ClassName Win32_OperatingSystem -Property ProductType | Select-Object -ExpandProperty ProductType) -eq "2" ) {
    Write-Output "Cannot create or modify local accounts on a domain controller"
    Exit 0
}

# Get the provisioning admin user account
$ProvisioningAdmin = Get-LocalUser -Name $ProvisioningAdminUsername -ErrorAction SilentlyContinue

# Exit if the provisioning admin account does not exist
If ( $ProvisioningAdmin -eq $false ) { Write-Output "Provisioning Admin account does not exist" ; Exit 0 }

# Exit if the user is logged in
If ( $(Get-CimInstance -Class Win32_Process -Filter 'name = "explorer.exe"' | Invoke-CimMethod -MethodName getowner).User -contains $ProvisioningAdminUsername ) {
    Write-Output "User is logged in, cannot complete removal of provisioning admin account"
    Exit 1
}

# Remove the provisioning admin account
$SID = $ProvisioningAdmin.SID.Value
Write-Output "Removing provisioning admin account`nUsername: ${ProvisioningAdminUsername}`nSID: $SID"
Try { Remove-LocalUser -SID $SID -ErrorAction Stop }
Catch { Write-Error "The provisioning admin account could not be removed`n"+$_.Exception.Message ; Exit 1 }

 # Fully remove the provisioning admin profile
Write-Output "Removing provisioning admin CIM instance"
Try { Get-CimInstance -Class Win32_UserProfile | Where-Object { $_.SID -eq $SID } -ErrorAction SilentlyContinue | Remove-CimInstance }
Catch { Write-Error "The provisioning admin profile could not be removed`n"+$_.Exception.Message ; Exit 1 }

# Delete any remaining provisioning admin directories
$ProfilePath = "${Env:SystemDrive}\Users\$ProvisioningAdminUsername"
If ( Test-Path $ProfilePath ) {
    Write-Output "Deleting provisioning admin profile directory: ${ProfilePath}"
    Try { Remove-Item $ProfilePath -Recurse -Force  }
    Catch { Write-Error "The provisioning admin profile directory could not be removed`n"+$_.Exception.Message ; Exit 1 }
}
