Stub script for launching PSADT with ServiceUI only if a specific exe (explorer.exe by default) is running

Invoke-ServiceUI.ps1

<#
.SYNOPSIS
This is a helper script to launch Deploy-Application.exe via ServiceUI to force the process to become visible when deployed by Intune, or other deployment systems that run in session 0.
.DESCRIPTION
This will launch the toolkit silently if the chosent process (explorer.exe by default) is not running. If it is running, then it will launch the toolkit interactively, and use ServiceUI to do so if the current process is non-interactive.
An alternate ProcessName can be specified if you only want the toolkit to be visible when a specific application is running.
Download MDT here: https://www.microsoft.com/en-us/download/details.aspx?id=54259
There are x86 and x64 builds of ServiceUI avaiable in MDT under 'Microsoft Deployment Toolkit\Templates\Distribution\Tools'. Rename these to ServiceUI_x86.exe and ServiceUI_x64.exe and place them with this script in the root of the toolkit next to Deploy-Application.exe.
.PARAMETER ProcessName
Specifies the name of the process check for to trigger the interactive installation. Default value is 'explorer'. Multiple values can be supplied such as 'app1','app2'. The .exe extension must be omitted.
.PARAMETER DeploymentType
Specifies the type of deployment. Valid values are 'Install', 'Uninstall', or 'Repair'. Default value is 'Install'.
.PARAMETER AllowRebootPassThru
Passthru of switch to Deploy-Application.exe, will instruct the toolkit to not to mask a 3010 return code with a 0.
.PARAMETER TerminalServerMode
Passthru of switch to Deploy-Application.exe to enable terminal server mode.
.PARAMETER DisableLogging
Passthru of switch to Deploy-Application.exe to disable logging.
.EXAMPLE
.\Invoke-ServiceUI.ps1 -ProcessName 'WinSCP' -DeploymentType 'Install' -AllowRebootPassThru
Invoking the script from the command line.
.EXAMPLE
%SystemRoot%\System32\WindowsPowerShell\v1.0\PowerShell.exe -ExecutionPolicy Bypass -NoProfile -File Invoke-ServiceUI.ps1 -DeploymentType Install -AllowRebootPassThru
An example command line to use in Intune.
#>
param (
    [string[]]$ProcessName = @('explorer'),
    [ValidateSet('Install', 'Uninstall', 'Repair')]
    [string]$DeploymentType = 'Install',
    [switch]$AllowRebootPassThru,
    [switch]$TerminalServerMode,
    [switch]$DisableLogging
)

Push-Location $PSScriptRoot

if ($env:PROCESSOR_ARCHITECTURE -eq 'AMD64' -or $env:PROCESSOR_ARCHITEW6432 -eq 'AMD64') {
    $Architecture = 'x64'
} else {
    $Architecture = 'x86'
}

if (Get-Process -Name $ProcessName -ErrorAction SilentlyContinue) {
    if ([Environment]::UserInteractive) {
        # Start-Process is used here otherwise script does not wait for completion
        $Process = Start-Process -FilePath '.\Deploy-Application.exe' -ArgumentList "-DeploymentType $DeploymentType -DeployMode Interactive -AllowRebootPassThru:`$$AllowRebootPassThru -TerminalServerMode:`$$TerminalServerMode -DisableLogging:`$$DisableLogging" -NoNewWindow -Wait -PassThru
        $ExitCode = $Process.ExitCode
    } else {
        # Using Start-Process with ServiceUI results in Error Code 5 (Access Denied)
        &".\ServiceUI_$Architecture.exe" -process:explorer.exe Deploy-Application.exe -DeploymentType $DeploymentType -DeployMode Interactive -AllowRebootPassThru:"`$$AllowRebootPassThru" -TerminalServerMode:"`$$TerminalServerMode" -DisableLogging:"`$$DisableLogging"
        $ExitCode = $LastExitCode
    }
} else {
    $Process = Start-Process -FilePath '.\Deploy-Application.exe' -ArgumentList "-DeploymentType $DeploymentType -DeployMode Silent -AllowRebootPassThru:`$$AllowRebootPassThru -TerminalServerMode:`$$TerminalServerMode -DisableLogging:`$$DisableLogging" -NoNewWindow -Wait -PassThru
    $ExitCode = $Process.ExitCode
}

Pop-Location
exit $ExitCode

I've just made a small tweak to use Push/Pop location instead of Set, so that running the script does not permanently change your current directory.