我正在尝试使用PowerShell远程处理在远程计算机上安装Windows安全修补程序。这是我用来更新Windows的函数

<#
.SYNOPSIS
This functiion will automatically install all avaialable windows updates on a device and will automatically reboot if needed, after reboot, windows updates will continue to run until no more updates are available.
#>

function Install-WindowsUpdates

{
Install-Module -Name PSWindowsUpdate -RequiredVersion 2.1.0.1 -Force
Import-Module PSWindowsUpdate -Force
Get-WindowsUpdate -install -acceptall
}

当我在本地主机上运行此函数时，该函数成功安装了Windows安全补丁。我有下面的脚本来远程执行相同的操作：

param(

    [Parameter(Mandatory = $true)]
    [string] $IPaddress
)
try
{
$secpasswd = ConvertTo-SecureString "Pass@12345678" -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential ("Admin02", $secpasswd)

#Create a Session.
$Session = New-PSSession -ComputerName $IPaddress -Credential $cred

cd C:\Users\Admin01\Documents
. .\Install-WindowsUpdates.ps1

Invoke-Command -Session $Session -ScriptBlock ${function:Install-WindowsUpdates}
return $true
}
catch
{
return $false
}

当我运行这个脚本时，我得到以下错误：

Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
    + CategoryInfo          : NotSpecified: (:) [Get-WindowsUpdate], UnauthorizedAccessException
    + FullyQualifiedErrorId : System.UnauthorizedAccessException,PSWindowsUpdate.GetWindowsUpdate
    + PSComputerName        : 10.0.0.7

我已经设置了loaclhost和远程机器远程和能够远程执行其他脚本。也启用了远程机器上的WMI。还有什么其他的设置我必须做？

**使用定时任务：**我使用以下脚本启动定时任务：

param(
   [parameter(Mandatory = $true)]
   [string]$IPaddress
)
$PSModulePath = $env:PSModulePath
$SplittedModulePath = $PSModulePath.Split(";")
$ModulePath = $SplittedModulePath[0]
$secpasswd = ConvertTo-SecureString "Pass@12345678" -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential ("Admin02", $secpasswd)
#Create a Session. Replace host name with the host name of the remote machine.
$Session = New-PSSession -ComputerName $IPaddress -Credential $cred
$User= "Admin02"
$Action= New-ScheduledTaskAction -Execute "PowerShell.exe" -Argument "$env:ALLUSERSPROFILE\Install-WindowsUpdate.ps1"
$Trigger= New-ScheduledTaskTrigger -At 5:05am -Once
Invoke-Command -Session $Session -ScriptBlock { Register-ScheduledTask -TaskName "Install-Updates" -User $Using:User -Action $Using:Action -Trigger $Using:Trigger -RunLevel Highest –Force }

我已将以下脚本复制到目标计算机上的路径$env：ALLUSERSPROFILE

<#
.SYNOPSIS
This functiion will automatically install all avaialable windows updates on a device and will automatically reboot if needed, after reboot, windows updates will continue to run until no more updates are available.
.PARAMETER computer
Use the Computer parameter to specify the Computer to remotely install windows updates on.
#>

Install-Module -Name PSWindowsUpdate -RequiredVersion 2.1.0.1 -Force
Import-Module PSWindowsUpdate -Force
Get-WindowsUpdate -install -acceptall

在我安排任务后，什么也没发生。我做错了什么？