Test-PendingReboot

1.6

Test-PendingReboot.ps1


<#PSScriptInfo
 
.VERSION 1.6
 
.GUID fe3d3698-52fc-40e8-a95c-bbc67a507ed1
 
.AUTHOR Adam Bertram
 
.COMPANYNAME Adam the Automator, LLC
 
.COPYRIGHT
 
.DESCRIPTION This script tests various registry values to see if the local computer is pending a reboot.
 
.TAGS
 
.LICENSEURI
 
.PROJECTURI
 
.ICONURI
 
.EXTERNALMODULEDEPENDENCIES
 
.REQUIREDSCRIPTS
 
.EXTERNALSCRIPTDEPENDENCIES
 
.RELEASENOTES
 
.SYNOPSIS
    This script tests various registry values to see if the local computer is pending a reboot
.NOTES
    Inspiration from: https://gallery.technet.microsoft.com/scriptcenter/Get-PendingReboot-Query-bdb79542
.EXAMPLE
    PS> Test-PendingReboot -ComputerName localhost
     
    This example checks various registry values to see if the local computer is pending a reboot.
#>
[CmdletBinding()]
param(
    [Parameter(Mandatory)]
    [ValidateNotNullOrEmpty()]
    [string[]]$ComputerName,
    
    [Parameter()]
    [ValidateNotNullOrEmpty()]
    [pscredential]$Credential
)

$ErrorActionPreference = 'Stop'

$scriptBlock = {
    function Test-RegistryKey {
        [OutputType('bool')]
        [CmdletBinding()]
        param
        (
            [Parameter(Mandatory)]
            [ValidateNotNullOrEmpty()]
            [string]$Key
        )
    
        $ErrorActionPreference = 'Stop'

        if (Get-Item -Path $Key -ErrorAction Ignore) {
            $true
        }
    }

    function Test-RegistryValue {
        [OutputType('bool')]
        [CmdletBinding()]
        param
        (
            [Parameter(Mandatory)]
            [ValidateNotNullOrEmpty()]
            [string]$Key,

            [Parameter(Mandatory)]
            [ValidateNotNullOrEmpty()]
            [string]$Value
        )
    
        $ErrorActionPreference = 'Stop'

        if (Get-ItemProperty -Path $Key -Name $Value -ErrorAction Ignore) {
            $true
        }
    }

    function Test-RegistryValueNotNull {
        [OutputType('bool')]
        [CmdletBinding()]
        param
        (
            [Parameter(Mandatory)]
            [ValidateNotNullOrEmpty()]
            [string]$Key,

            [Parameter(Mandatory)]
            [ValidateNotNullOrEmpty()]
            [string]$Value
        )
    
        $ErrorActionPreference = 'Stop'

        if (($regVal = Get-ItemProperty -Path $Key -Name $Value -ErrorAction Ignore) -and $regVal.($Value)) {
            $true
        }
    }

    $tests = @(
        { Test-RegistryKey -Key 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending' }
        { Test-RegistryKey -Key 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootInProgress' }
        { Test-RegistryKey -Key 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired' }
        { Test-RegistryKey -Key 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing\PackagesPending' }
        { Test-RegistryKey -Key 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\PostRebootReporting' }
        { Test-RegistryValueNotNull -Key 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager' -Value 'PendingFileRenameOperations' }
        { Test-RegistryValueNotNull -Key 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager' -Value 'PendingFileRenameOperations2' }
        { (Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Updates' -Name 'UpdateExeVolatile' -ErrorAction Ignore | Select-Object -ExpandProperty UpdateExeVolatile) -ne 0 }
        { Test-RegistryValue -Key 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce' -Value 'DVDRebootSignal' }
        { Test-RegistryKey -Key 'HKLM:\SOFTWARE\Microsoft\ServerManager\CurrentRebootAttemps' }
        { Test-RegistryValue -Key 'HKLM:\SYSTEM\CurrentControlSet\Services\Netlogon' -Value 'JoinDomain' }
        { Test-RegistryValue -Key 'HKLM:\SYSTEM\CurrentControlSet\Services\Netlogon' -Value 'AvoidSpnSet' }
        {
            (Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\ComputerName' -Name 'ActiveComputerName').ActiveComputerName -ne
            (Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\ComputerName' -Name 'ActiveComputerName').ComputerName
        }
        {
            if (Get-ChildItem -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending') {
                $true
            }
        }
    )

    foreach ($test in $tests) {
        if (& $test) {
            $true
            break
        }
    }
}

foreach ($computer in $ComputerName) {
    try {
        $connParams = @{
            'ComputerName' = $computer
        }
        if ($PSBoundParameters.ContainsKey('Credential')) {
            $connParams.Credential = $Credential
        }

        $output = @{
            ComputerName    = $computer
            IsPendingReboot = $false
        }

        $psRemotingSession = New-PSSession @connParams
        
        if (-not ($output.IsPendingReboot = Invoke-Command -Session $psRemotingSession -ScriptBlock $scriptBlock)) {
            $output.IsPendingReboot = $false
        }
        [pscustomobject]$output
    } catch {
        Write-Error -Message $_.Exception.Message
    } finally {
        $psRemotingSession | Remove-PSSession
    }
}