How To: Use PowerShell to Check Pending Reboot

1 Overview
2 Prerequisites
3 Instructions
4 Need Support?

Overview

This document will cover using PowerShell to check for any pending reboots.

Prerequisites

Administrator access to Windows PowerShell

Instructions

Open PowerShell as Administrator
Run the following command

$pendingReboot = Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired" -ErrorAction SilentlyContinue
if ($pendingReboot -ne $null) {
    Write-Host "Pending reboot detected."
} else {
    Write-Host "No pending reboot found."
}

Here is a sample of the output that is returned when no reboot is needed:

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