CreateSchdTskOnEvent.ps1

# The following is an example, it's not a function, it's not meant to be run
# as is, I just wrote it to show how creating a scheduled tak on an event
# can be done in PowerShell. I wrote a small post about how it came to be, that
# can be read at https://xavier.plantefeve.fr/posts/SchdTskOnEvent

$class = Get-cimclass -ClassName MSFT_TaskEventTrigger -Namespace root/Microsoft/Windows/TaskScheduler

$trigger = $class | New-CimInstance -ClientOnly
$trigger.Enabled = $true
$trigger.Subscription = '<QueryList><Query Id="0" Path="Microsoft-Windows-NetworkProfile/Operational"><Select `
Path="Microsoft-Windows-NetworkProfile/Operational">*[System[Provider[@Name=''Microsoft-Windows-NetworkProfile''] `
and EventID=10000]]</Select></Query></QueryList>'

$ActionParameters = @{
    Execute  = 'C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe'
    Argument = '-NoProfile -File C:\scripts\NetworkConnectionCheck.ps1'
}

$Action    = New-ScheduledTaskAction @ActionParameters
$Principal = New-ScheduledTaskPrincipal -UserId 'NT AUTHORITY\SYSTEM' -LogonType ServiceAccount
$Settings  = New-ScheduledTaskSettingsSet

$RegSchTaskParameters = @{
    TaskName    = 'Network checks'
    Description = 'runs at network connection'
    TaskPath    = '\Event Viewer Tasks\'
    Action      = $Action
    Principal   = $Principal
    Settings    = $Settings
    Trigger     = $Trigger
}

Register-ScheduledTask @RegSchTaskParameters