如何让powershell检查我的计算机'；的Windows更新已过期超过30天

我正在测试我的电脑的windows更新是否超过30天，如果超过30天，我会弹出一条消息警告用户

有人能帮我测试一下日期吗，因为无论发生什么情况，你的WINDOWS更新都是最新的，这似乎给了我相同的结果

我想我需要更改日期的格式，以便能够根据

Get date

结果对其进行测试

Get-WmiObject -Class win32_reliabilityRecords -filter "sourcename = 'Microsoft-Windows-WindowsUpdateClient'" -ErrorAction SilentlyContinue | 
    select -first 1 @{LABEL = "date"; EXPRESSION = {$_.ConvertToDateTime($_.timegenerated)}}, @{LABEL = 'Update'; EXPRESSION = {$_.message}} |
    FT -AutoSize -Wrap

$DateTimeNow = Get-Date
$Daysback = "-31" 
$Updatedate = $_.ConvertToDateTime

if ($DateTimeNow.AddDays($Daysback) -lt $Updatedate.InstalledOn.Date) {
    $wshell = New-Object -ComObject Wscript.Shell

    $wshell.Popup("***WARNING***YOUR WINDOWS UPDATES ARE OVER A MONTH OUT OF 
    DATE. PLEASE CONTACT  IT", 0, " Windows Update Check", 0x1)
}
else {
    $wshell = New-Object -ComObject Wscript.Shell

    $wshell.Popup("YOUR WINDOWS UPDATES ARE IN DATE", 0, " Windows 
    Update Check", 0x1)
}

这应该起作用：

$LastUpdate = Get-WmiObject -Class win32_reliabilityRecords -filter "sourcename = 
    'Microsoft-Windows-WindowsUpdateClient'" -ErrorAction SilentlyContinue |
    Select -first 1 @{LABEL = "date";EXPRESSION = {$_.ConvertToDateTime($_.timegenerated)}},@{LABEL = 'Update';EXPRESSION = {$_.message}}

$DateTimeNow = Get-Date
$Daysback = -31

if($LastUpdate.Date -lt $DateTimeNow.AddDays($Daysback)){
    $wshell = New-Object -ComObject Wscript.Shell
    $wshell.Popup("***WARNING***YOUR WINDOWS UPDATES ARE OVER A MONTH OUT OF DATE. PLEASE CONTACT  IT",0," Windows Update Check",0x1)
} else {
    $wshell = New-Object -ComObject Wscript.Shell
    $wshell.Popup("YOUR WINDOWS UPDATES ARE IN DATE",0," Windows Update Check",0x1)
}

更改：

• 您没有返回变量的

  Get WmiObject

  调用的结果，而是测试始终为空的

  $Updatedate

• 你的约会逻辑需要颠倒

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为什么不这样做<代码>gwmi win32_quickfixengineering |？{（$\.Installedon-gt（（获取日期）.adddays（-30））-和（$\.Installedon-lt（获取日期））}