Windows RDS - Script to gracefully reboot the server (notify users)

windows-rds-temp-user-fw-rule-cleanup.ps1

# Task Scheduler
#   General
#     Use local service-user of SYSTEM
#     Enable 'Run whether user is logged in or not'
#     Enable 'Do not store password'
#     Enable 'Run with highest privileges'
#
#   Action
#     Program: C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
#     Arguments: -File C:\scripts\GracefulReboot.ps1

# NOTE: you may want to change the 'MessageTitle' and 'MessageBody' of the user-notifications

$date = Get-Date -format yyyy-MM-dd
$logFile = "C:\logs\auto_reboot.log"

Write-Output "-------------------------"$date"-------------------------" >> $logFile

#getting all users that are logged on locally
$quserResult = quser 2>&1
$quserRegex = $quserResult | ForEach-Object -Process { $_ -replace '\s{2,}',',' }
$quserObject = $quserRegex | ConvertFrom-Csv

#write info messages to all logged on users
foreach ($user in $quserObject){
  Send-RDUserMessage -HostServer localhost -UnifiedSessionID $user.ID -MessageTitle "Administrator" -MessageBody "Bitte schließe und speichere offene Dokumente/Programme. Du wirst in 10 Minuten abgemeldet. Eine Wieder-Anmeldung ist nach 5 Minuten möglich. (automatische Nachricht)"
}

#wait 9 minutes
Start-Sleep -Seconds 540

#another message to all logged on users
foreach ($user in $quserObject){
  Send-RDUserMessage -HostServer localhost -UnifiedSessionID $user.ID -MessageTitle "Administrator" -MessageBody "Du wirst in 1 Minute abgemeldet. Eine Wieder-Anmeldung ist nach 5 Minuten möglich. (automatische Nachricht)"
}

#wait 1 minute
Start-Sleep -Seconds 60

#log off all users
foreach ($user in $quserObject){
  $username = $user.USERNAME.Substring(1)
  Write-Output "Logging off user '$username'"
  Invoke-RDUserLogoff -HostServer localhost -UnifiedSessionID $user.ID -Force
} 3>&1 2>&1 >> $logFile

#wait for clean logoff
Start-Sleep -Seconds 60

#rebooting server
Write-Output "Rebooting server!" >> $logFile
Restart-Computer