Import-WsusUpdate

2025.7.0

Private/GetUpdateIDFromKB.ps1

                                function GetUpdateIDFromKB {

    [CmdletBinding()]

    param (

        [Parameter(Mandatory, Position = 0)]

        [ValidateNotNullOrEmpty()]

        [string]

        $KB,

        [Parameter()]

        [string[]]

        $Filter

    )

    try {

        $additionalFilters = ""

        if ($Filter) {

            $additionalFilters = [System.Net.WebUtility]::UrlEncode(" $( [string]::Join(" ", $Filter) )")

        }

        $finalUri = "https://www.catalog.update.microsoft.com/Search.aspx?q=$KB${additionalFilters}"

        Write-Verbose "Searching for UpdateID from KB `"$KB`" using `"$finalUri`" as the final URI..."

        $webRequestParams = GetWebRequestSplatBase -Uri $finalUri

        $response = Invoke-WebRequest @webRequestParams -ErrorAction Stop

        $updateLinks = $response.Links | Where-Object -Property "onclick" -Like "*goToDetail*"

        if (!$updateLinks) {

            Write-Error -Message "No updates found matching KB $KB." `

                -Category ObjectNotFound `

                -ErrorId "NoUpdatesFound" `

                -TargetObject $KB

            return $null

        }

        if ($updateLinks.Count -gt 1) {

            if ($Filter) {

                $filtersUsed = "(filters used: $( [string]::Join(", ", $Filter) ))"

            } else {

                $filtersUsed = "(no additional filters used)"

            }

            Write-Error -Message "Found several matching updates when searching for the update with KB `"${KB}`" ${filtersUsed}." `

                -Category ObjectNotFound `

                -ErrorId "MultipleUpdatesFound" `

                -TargetObject $KB

            return $null

        }

        # At this point updateLinks has been unrolled to be its single result and not an array

        if ($updateLinks.id -notmatch ".*([a-zA-Z\d]{8}-(?:[a-zA-Z\d]{4}-){3}[a-zA-Z\d]{12}).*") {

            Write-Error -Message "Couldn't extract UpdateID from HTML id of update `"$($updateLinks.id)`"." `

                -Category InvalidData `

                -ErrorId "FailedExtractingUpdateID" `

                -TargetObject $updateLinks.id

            return $null

        }

        return $Matches[1]

    } catch {

        throw

    }

}

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