在PowerShell中执行脚本时出错WSUS GetUpdate（）

Question

我执行了一个Powershell脚本，但是我收到了一个错误

脚本

[datetime]$dataIni = "2017/01/01" 
[datetime]$dataFim = "2017/01/20"

$serverWsus = "server1"

[void]
$wsus =[Microsoft.UpdateServices.Administration.AdminProxy]::getUpdateServer($serverWsus,$False,8530)

Write-Progress -Activity 'Getting updates...' -PercentComplete 0

$updatesneeded = $wsus.GetUpdate() | ? {($_.CreationDate -gt 
[datetime]$dateFirst -and 
$_.CreationDate -lt [datetime]$dateLast) -and 
($_.Title -notmatch "Itanium" -and 
$_.Title -match "Windows Server 2008 x64" -and  
$_.UpdateClassificationTitle -eq "Security Updates")} 

$i = 0
$total = $updatesneeded.Count
foreach ($update in $updatesneeded) 
{ 
 Write-Progress -Activity 'Approving updates...' -Status "%Complete" -
 PercentComplete (($i/$total) * 100)
 Approve-WsusUpdate -Update $update -Action Install -TargetGroupName 'enviroment'
 $i++
 }
 Write-Host "Updates approved: $total" -ForegroundColor Yellow

错误

Cannot find an overload for "GetUpdate" and the argument count: "0".

在行：11 char：1 + $ updatesneeded = $ wsus.GetUpdate（）| ？ {（$ _。CreationDate -gt [datetime] $ dateFirs ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     + CategoryInfo：NotSpecified：（:) []，MethodException     + FullyQualifiedErrorId：MethodCountCouldNotFindBest

批准-WsusUpdate：无法绑定参数＆＃39;更新＆＃39;。无法转换＆＃34; Microsoft.UpdateServices.Internal.BaseApi.Update＆＃34;类型的值＆＃34; Microsoft.UpdateServices.Internal.BaseApi.Update＆＃34; 键入＆＃34; Microsoft.UpdateServices.Commands.WsusUpdate＆＃34;。 在行：22 char：32 + Approve-WsusUpdate -Update $ update -Action Install -TargetGroupName＆＃39; enviroment＆＃39; + ~~~~~~~     + CategoryInfo：InvalidArgument：（:) [Approve-WsusUpdate]，ParameterBindingException     + FullyQualifiedErrorId：CannotConvertArgumentNoMessage，Microsoft.UpdateServices.Commands.ApproveWsusUpdateCommand