Listing Windows Updates using Powershell

From Powershell.com

Listing Windows Updates

There is a not widely known COM object that you can use to list all the installed Windows Updates on a machine. Here is the code:

$Session = New-Object -ComObject Microsoft.Update.Session

$Searcher = $Session.CreateUpdateSearcher()

$HistoryCount = $Searcher.GetTotalHistoryCount()

$Searcher.QueryHistory(1,$HistoryCount) |

  Select-Object Date, Title, Description