Exclude a KB number from a Windows update Powershell Script.

Question

I am having a heck of a time removing a patch from the $updates patch collection. We have one that we do not want to install. Using attempts like $updates.remove are not working. Has anyone accomplished this before?
thanks
$updateSession = new-object -com "Microsoft.Update.Session"
Write-Host("Searching for applicable updates...") -Fore Green
$updates=$updateSession.CreateupdateSearcher().Search($criteria).Updates
$downloader = $updateSession.CreateUpdateDownloader()         
$downloader.Updates = $Updates
foreach ($y in $updates){$y.kbarticleIDs}
(section to remove a KB from $updates, based on KB)

Answer 1

Here is a little script that will create a hash table of all applicable updates, and their associated UUID's.  This can be used to look up the UUID, to use as a criteria when searching again:
$upids = @{}
$Searcher = New-Object -ComObject Microsoft.Update.Searcher
$results = $searcher.search("Type='software' AND IsInstalled = 0")
$Results.Updates |
ForEach-Object { $upids.Add($_.Title, $_.Identity.UpdateID) }
$upids
([string](0..9|%{[char][int](32+("39826578846355658268").substring(($_*2),2))})).replace(' ','')
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