Sometimes, the Microsoft.Update.Session object is used to check whether a given update is present on a machine. Some authors query the text title string of updates like this:
#requires -Version 3.0 function Get-UpdateInstalled([Parameter(Mandatory)]$KBNumber) { $Session = New-Object -ComObject "Microsoft.Update.Session" $Searcher = $Session.CreateUpdateSearcher() $historyCount = $Searcher.GetTotalHistoryCount() $status = @{ Name="Operation" Expression= { switch($_.operation) { 1 {"Installation"} 2 {"Uninstallation"} 3 {"Other"} } } } $Searcher.QueryHistory(0, $historyCount) | Where-Object {$_.Title -like "*KB$KBNumber*" } | Select-Object -Property Title, $status, Date } function Test-UpdateInstalled([Parameter(Mandatory)]$KBNumber) { $update = Get-UpdateInstalled -KBNumber $KBNumber | Where-Object Status -eq Installation | Select-Object -First 1 return $update -ne $null } Test-UpdateInstalled -KBNumber 2267602 Get-UpdateInstalled -KBNumber 2267602 | Out-GridView
Note that this approach is not only much faster, but by splitting up the task into two functions, you can also dump the titles of all installed updates:
PS> Get-UpdateInstalled -KBNumber 2267602 Title Operation Date ----- --------- ---- Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.348.0) Installation 28.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.281.0) Installation 27.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.237.0) Installation 26.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.191.0) Installation 25.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.139.0) Installation 24.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.95.0) Installation 22.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.93.0) Installation 22.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.28.0) Installation 21.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.249.13.0) Installation 20.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.247.1068.0) Installation 19.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.247.1010.0) Installation 18.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.247.969.0) Installation 17.07.20... Definitionsupdate für Windows Defender – KB2267602 (Definition 1.247.966.0) Installation 17.07.20...
