# encoding: utf-8
# api: powershell
# title: Get-PendingUpdates
# description: This function will allow you to query local or remote computer/s and determine if there are pending WSUS updates that need to be installed. A report is returned that can be exported to a CSV file if desired.
# version: 0.1
# type: function
# author: Boe Prox
# license: CC0
# function: Get-PendingUpdates
# x-poshcode-id: 5721
# x-archived: 2016-03-16T21:21:19
# x-published: 2016-02-02T12:16:00
#
#
Function Get-PendingUpdates {
<#
.SYNOPSIS
Retrieves the updates waiting to be installed from WSUS
.DESCRIPTION
Retrieves the updates waiting to be installed from WSUS
.PARAMETER Computer
Computer or computers to find updates for.
.EXAMPLE
Get-PendingUpdates
Description
-----------
Retrieves the updates that are available to install on the local system
.NOTES
Author: Boe Prox
Date Created: 05Mar2011
#>
#Requires -version 2.0
[CmdletBinding(
DefaultParameterSetName = 'computer'
)]
param(
[Parameter(
Mandatory = $False,
ParameterSetName = '',
ValueFromPipeline = $True)]
[string[]]$Computer
)
Begin {
$scriptdir = { Split-Path $MyInvocation.ScriptName –Parent }
Write-Verbose "Location of function is: $(&$scriptdir)"
$psBoundParameters.GetEnumerator() | ForEach-Object { Write-Verbose "Parameter: $_" }
If (!$PSBoundParameters['computer']) {
Write-Verbose "No computer name given, using local computername"
[string[]]$computer = $Env:Computername
}
#Create container for Report
Write-Verbose "Creating report collection"
$report = @()
}
Process {
ForEach ($c in $Computer) {
Write-Verbose "Computer: $($c)"
If (Test-Connection -ComputerName $c -Count 1 -Quiet) {
Try {
#Create Session COM object
Write-Verbose "Creating COM object for WSUS Session"
$updatesession = [activator]::CreateInstance([type]::GetTypeFromProgID("Microsoft.Update.Session",$c))
}
Catch {
Write-Warning "$($Error[0])"
Break
}
#Configure Session COM Object
Write-Verbose "Creating COM object for WSUS update Search"
$updatesearcher = $updatesession.CreateUpdateSearcher()
#Configure Searcher object to look for Updates awaiting installation
Write-Verbose "Searching for WSUS updates on client"
$searchresult = $updatesearcher.Search("IsInstalled=0")
#Verify if Updates need installed
Write-Verbose "Verifing that updates are available to install"
If ($searchresult.Updates.Count -gt 0) {
#Updates are waiting to be installed
Write-Verbose "Found $($searchresult.Updates.Count) update\s!"
#Cache the count to make the For loop run faster
$count = $searchresult.Updates.Count
#Begin iterating through Updates available for installation
Write-Verbose "Iterating through list of updates"
For ($i=0; $i -lt $Count; $i++) {
#Create object holding update
$update = $searchresult.Updates.Item($i)
#Verify that update has been downloaded
Write-Verbose "Checking to see that update has been downloaded"
If ($update.IsDownLoaded -eq "True") {
Write-Verbose "Auditing updates"
$temp = "" | Select Computer, Title, KB,IsDownloaded
$temp.Computer = $c
$temp.Title = ($update.Title -split('\('))[0]
$temp.KB = (($update.title -split('\('))[1] -split('\)'))[0]
$temp.IsDownloaded = "True"
$report += $temp
}
Else {
Write-Verbose "Update has not been downloaded yet!"
$temp = "" | Select Computer, Title, KB,IsDownloaded
$temp.Computer = $c
$temp.Title = ($update.Title -split('\('))[0]
$temp.KB = (($update.title -split('\('))[1] -split('\)'))[0]
$temp.IsDownloaded = "False"
$report += $temp
}
}
}
Else {
#Nothing to install at this time
Write-Verbose "No updates to install."
#Create Temp collection for report
$temp = "" | Select Computer, Title, KB,IsDownloaded
$temp.Computer = $c
$temp.Title = "NA"
$temp.KB = "NA"
$temp.IsDownloaded = "NA"
$report += $temp
}
}
Else {
#Nothing to install at this time
Write-Warning "$($c): Offline"
#Create Temp collection for report
$temp = "" | Select Computer, Title, KB,IsDownloaded
$temp.Computer = $c
$temp.Title = "NA"
$temp.KB = "NA"
$temp.IsDownloaded = "NA"
$report += $temp
}
}
}
End {
Write-Output $report
}
}