Windows Scheduled Task, with Managed Service Account, Runs Every 15 Minutes, Indefinitely.

MSA_scheduled_task_always_running.ps1

$appPath = "testapp.exe"

# for testing with user account instead of MSA
$serviceAccount = whoami.exe
#serviceAccount = "DOMAIN\MyServiceAccount"

$taskName = "My Test Task"

$command = "-Command "". 'C:\apps\$appPath'"""
$action = New-ScheduledTaskAction -Execute $command
$execute = Get-Date -Hour 0 -Minute 0 -Second 0 -Millisecond 0
$trigger = New-ScheduledTaskTrigger -Once -at $execute

# for testing with local account instead of MSA
$principal = New-ScheduledTaskPrincipal -UserID $serviceAccount
#$principal = New-ScheduledTaskPrincipal -UserID $serviceAccount -LogonType Password

$task = Register-ScheduledTask $taskName -Action $action -trigger $trigger -Principal $principal
$task.Triggers.Repetition.Interval = "PT15M"
$task.Triggers.Repetition.Duration = ""
$task | Set-ScheduledTask