List installed updates via PowerShell

To view installed updates, use the PowerShell commands below.

$Session = New-Object -ComObject Microsoft.Update.Session
$Searcher = $Session.CreateUpdateSearcher()
$Searcher.Search("IsInstalled=1").Updates | ft -a title

To view only one particular patch:

$Searcher.Search("IsInstalled=1").Updates | Where {$_.Title -like "*KB4025342*”} | ft title