Get-PendingUpdate.ps1

Function Get-PendingUpdate { 
    <#    
      .SYNOPSIS   
        Retrieves the updates waiting to be installed from WSUS   
      .DESCRIPTION   
        Retrieves the updates waiting to be installed from WSUS  
      .PARAMETER Computername 
        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                                           
                                        
    #> 
      
    #Requires -version 3.0   
    [CmdletBinding( 
        DefaultParameterSetName = 'computer' 
        )] 
    param( 
        [Parameter(ValueFromPipeline = $True)] 
            [string[]]$Computername = $env:COMPUTERNAME
        )     
    Process { 
        ForEach ($computer in $Computername) { 
            If (Test-Connection -ComputerName $computer -Count 1 -Quiet) { 
                Try { 
                #Create Session COM object 
                    Write-Verbose "Creating COM object for WSUS Session" 
                    $updatesession =  [activator]::CreateInstance([type]::GetTypeFromProgID("Microsoft.Update.Session",$computer)) 
                    } 
                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)
                        [pscustomobject]@{
                            Computername = $Computer
                            Title = $Update.Title
                            KB = $($Update.KBArticleIDs)
                            SecurityBulletin = $($Update.SecurityBulletinIDs)
                            MsrcSeverity = $Update.MsrcSeverity
                            IsDownloaded = $Update.IsDownloaded
                            Url = $($Update.MoreInfoUrls)
                            Categories = ($Update.Categories | Select-Object -ExpandProperty Name)
                            BundledUpdates = @($Update.BundledUpdates)|ForEach{
                               [pscustomobject]@{
                                    Title = $_.Title
                                    DownloadUrl = @($_.DownloadContents).DownloadUrl
                                }
                            }
                        } 
                    }
                } 
                Else { 
                    #Nothing to install at this time 
                    Write-Verbose "No updates to install." 
                }
            } 
            Else { 
                #Nothing to install at this time 
                Write-Warning "$($c): Offline" 
            }  
        }
    }  
}