Returns LCU Installations in your OS

SessionsLCU.ps1

[xml]$SessionsXml = Get-Content -Path "$env:WinDir\Servicing\Sessions\Sessions.xml"
$Sessions = $SessionsXml.Sessions.Session | `
Where-Object {$_.Tasks.Phase.package.id -like "*RollupFix*" -and $_.Tasks.Phase.package.targetState -eq 'Installed'}

$InstalledLCU = @()
foreach ($Session in $Sessions) {
    $obj = $null
    $obj = New-Object System.Object
    $obj | Add-Member -type NoteProperty -Name Complete -Value $Session.Complete
    $obj | Add-Member -type NoteProperty -Name Package -Value $Session.Tasks.Phase.Package.id
    $InstalledLCU += $obj
}
$InstalledLCU