用powershell 批量卸载 windows 更新

$KBID = "KB958488"
$KBID1 = "KB976902"
cls
function Remove-Update {

$HotFixes = Get-HotFix
[int]$count = ;
foreach ($HotFix in $HotFixes)
{
    $count = $count +
    Write-Host $count / $HotFixes.Count
    if (($KBID -ne $HotFix.HotfixId) -and ($KBID1 -ne $HotFix.HotfixId))
    {
        "Inside first if"
        $KBID = $HotFix.HotfixId.Replace("KB", "")
        $RemovalCommand = "wusa.exe /uninstall /kb:$KBID /quiet /norestart"
        Write-Host "Removing $KBID from the target."
        Invoke-Expression $RemovalCommand 

    } 

    if ($KBID -match "All")
    {
        $KBNumber = $HotFix.HotfixId.Replace("KB", "")
        $RemovalCommand = "wusa.exe /uninstall /kb:$KBNumber /quiet /norestart"
        Write-Host "Removing update $KBNumber from the target."
        Invoke-Expression $RemovalCommand 

    } 

    if ($KBID -match "Security")
    {
        if ($HotFix.Description -match "Security")
        { 

            $KBSecurity = $HotFix.HotfixId.Replace("KB", "")
            $RemovalCommand = "wusa.exe /uninstall /kb:$KBSecurity /quiet /norestart"
            Write-Host "Removing Security Update $KBSecurity from the target."
            Invoke-Expression $RemovalCommand
        }
    } 

    while (@(Get-Process wusa -ErrorAction SilentlyContinue).Count -ne )
    {
        Start-Sleep
        Write-Host "Waiting for update removal to finish ..."
    }
}

}

Remove-Update