HideLangPacks.ps1

function Get-UpdateList {
<#
.SYNOPSIS
Gets an ISearchResult containing updates from Windows Update.

.PARAMETER Computername
The target computer. 
Cannot use an array of computernames here.
Defaults to the local PC.
   
.PARAMETER  Criteria
The search criteria, see http://goo.gl/7nZSPs
Left at default, it will return all software updates that have not yet
been installed. Driver updates are ignored.


.NOTES
Returns an IUpdateCollection (http://goo.gl/8C2dbb) named IUpdateCollection
IUpdateCollection is type System.__ComObject#{c1c2f21a-d2f4-4902-b5c6-8a081c19a890}
WU error codes: http://goo.gl/cSWDY8

.EXAMPLE
Get-UpdateList 
(TODO)

.EXAMPLE
(Get-UpdateList).Count
5

Shows that there are 5 updates available.

#>

    [CmdletBinding()]
    Param (
        [Parameter(ValueFromPipeline=$true, Position=0)] [string]$Computername = ".",
        [Parameter(ValueFromPipeline=$false, Position=1)] [string]$Criteria = "IsInstalled=0 and Type='Software'"
    )
    
    $Searcher = New-Object -ComObject Microsoft.Update.Searcher
    $ISearchResult = $Searcher.Search($Criteria)
    $ISearchResult
}

function Hide-Update {
<#
.Synopsis
   Hides or un-hides updates as specified by KB article number (KBID).
.PARAMETER ISearchResult
   ISearchResult is delivered from Get-UpdateList and is a COM object.
   (http://goo.gl/pvnUSM)
.PARAMETER KBID
   One or more KBIDs to hide or un-hide.
.PARAMETER UNHIDE
   Switch parameter. If used, the specified KBID(s) will be UN-hidden.
.EXAMPLE
   
#>
    [CmdletBinding()]
    Param
    (
        [Parameter(Mandatory=$false,ValueFromPipeline=$true,Position=0)]$ISearchResult,
        [Parameter(Mandatory=$true,ValueFromPipelineByPropertyName=$false,Position=1)][string[]]$KBID,
        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$false,Position=2)][switch]$UnHide
    )

    Begin {
        if ($ISearchResult -eq $null) {$ISearchResult = Get-UpdateList }
        if ($ISearchResult.pstypenames -notcontains 'System.__ComObject#{d40cff62-e08c-4498-941a-01e25f0fd33c}') {
            Write-Error "$ISearchResult is not an ISearchResult object (http://goo.gl/pvnUSM)"
            break
        }    
    }

    Process {
        foreach ($u in $ISearchResult.Updates){
            if ($UnHide) {
                if ($KBID -contains $($u.KbArticleIDs)) {$u.isHidden = $false}
            } else {
                if ($KBID -contains $($u.KbArticleIDs)) {$u.isHidden = $true}
            }
        }
        $ISearchResult
    }
}

#----
Write-Output "Working ..."
Hide-update -KBID 2483139 #Language packs win7
Write-Output "Done"