Query installed and available updates on Windows

README.md

Query installed and available updates on Windows

Using PowerShell...

Installed updates

$session = New-Object -ComObject "Microsoft.Update.Session"
$updatesearcher = $session.CreateUpdateSearcher()
$count = $updatesearcher.GetTotalHistoryCount()
$updates = $updatesearcher.QueryHistory(0, $count)

foreach ($update in $updates) {
  $out = New-Object -Type PSObject -Prop @{
    ‘KB’ = [regex]::match($update.Title,’KB(\d+)’)
    ‘Title’ = $update.Title
    ‘Description’ = $update.Description
    ‘Id’ = $update.UpdateIdentity.UpdateId
    ‘RevisionNumber’ = $update.UpdateIdentity.RevisionNumber
  }
  Write-Output $out
}

Note: should be improved to consider $update.ResultCode and $update.Operation.

Available updates

$session = New-Object -ComObject "Microsoft.Update.Session"
$updatesearcher = $session.CreateUpdateSearcher()
$searchresult = $updatesearcher.Search("IsInstalled=0")

foreach ($update in $searchresult.Updates) {
  $out = New-Object -Type PSObject -Prop @{
    'Title' =  $update.Title
    'KB' = $($update.KBArticleIDs)
  }
  Write-Output $out
}

Is there a way to list out all updates released for a specific Microsoft Product?