Powershell Script – Software Center (SCCM) Check if the server needs to be rebooted

function Test-PendingReboot
{
if (Get-ChildItem "HKLM:\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending" -EA Ignore) { return $true }
if (Get-Item "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired" -EA Ignore) { return $true }
if (Get-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager" -Name PendingFileRenameOperations -EA Ignore) { return $true }
try {
$util = [wmiclass]"\.\root\ccm\clientsdk:CCM_ClientUtilities"
$status = $util.DetermineIfRebootPending()
if(($status -ne $null) -and $status.RebootPending){
return $true
}
}catch{}

return $false
}