Scripts/Set-PSWSUSClassification.ps1

function Set-PoshWsusClassification {

    <#
    .SYNOPSIS
        Sets whether the classifications of updates that Windows Server Update Services (WSUS)
        synchronizes are enabled or disabled.
     
    .DESCRIPTION
        The Set-PoshWsusClassification cmdlet enables or disables the category of updates
        (for example security or critical) to be synchronized.
 
        Using this cmdlet without filtering results. Get-PoshWSUSUpdateClassification cmdlet must be run,
        then the results are piped it into this cmdlet.
     
        Using this cmdlet with filtered results. The Get-WsusClassification cmdlet must be run,
        then results are filtered using the Where-Object cmdlet and piped into this cmdlet.
 
    .PARAMETER Classification
        Specifies the classification of updates that are to be synchronized. If the Disable parameter is used,
        then this parameter specifies the classification of updates that are not to be synchronized.
        This parameter value is piped from the Get-PoshWSUSUpdateClassification cmdlet.
     
    .PARAMETER Disable
        Specifies that updates are not to be synchronized for the specified classification.
 
    .NOTES
        Name: Set-PoshWsusClassification
        Author: Dubinsky Evgeny
        DateCreated: 10MAY2013
     
    .EXAMPLE
        Get-PoshWSUSUpdateClassification | Set-PoshWsusClassification
         
        Description
        -----------
        This command enable all classification, to sync with MS Windows Update.
 
    .EXAMPLE
        Get-PoshWSUSUpdateClassification | where {$_.Title -eq "Drivers" } | Set-PoshWsusClassification -Disable
         
        Description
        -----------
        This command will disable Drivers class from sync with MS Windows Update.
     
    .EXAMPLE
        Get-PoshWSUSUpdateClassification | where {$_.Title -in @( 'Critical Updates', 'Service Packs' )} | Set-PoshWsusClassification
 
        Description
        -----------
        This command will enable to sync with MS Windows Update Critical Updates and Service Packs.
    #>

    [CmdletBinding()]
    Param
    (
        [Parameter(
            Mandatory = $True,
            Position = 0,
            ValueFromPipeline = $True)]
            [Microsoft.UpdateServices.Administration.UpdateClassificationCollection]$Classification,
        [Parameter(
            Mandatory = $false,
            Position = 1,
            ValueFromPipeline = $false)]
            [switch]$Disable
    )

    Begin
    {
        if($wsus)
        {
            if($PSBoundParameters['Disable'])
            {
                $Collection = $wsus.GetSubscription().GetUpdateClassifications()
            }
            else 
            {
                $Collection = New-Object -TypeName Microsoft.UpdateServices.Administration.UpdateClassificationCollection
                
            }
            $Subscription = $wsus.GetSubscription()
        }
        else
        {
            Write-Warning "Use Connect-PSWSUSServer to establish connection with your Windows Update Server"
            Break
        }
    }
    Process
    { 
        if($PSBoundParameters['Disable'])
        {
            foreach ($Class in $Classification)
            {
                $ClassTitle = $Class.Title
                if ($Collection -notcontains $ClassTitle)
                {
                    Write-Warning "Class $ClassTitle not enable."
                }
                else
                {
                    $Classification | % { $Collection.Remove($_) } 
                }
            }
        }
        else 
        {
            $Classification | % { $Collection.Add($_) | Out-Null }
        }
        $Subscription.SetUpdateClassifications($Collection)
    }
    End
    {
        $Subscription.Save()
    }
}