发生错误时如何停止powershell脚本？

我有一个“主”powershell 脚本，它执行多个在虚拟机上安装应用程序的脚本。我正在尝试在主脚本上实现错误控制，意思是：

如果安装应用程序的脚本之一失败，则不会执行其余脚本。

这是我的主要脚本：

try{
    powershell.exe -ExecutionPolicy Unrestricted -File 'C:\\TEST\\Scripts\\App1.ps1'    
    powershell.exe -ExecutionPolicy Unrestricted -File 'C:\\TEST\\Scripts\\App2.ps1'    
    powershell.exe -ExecutionPolicy Unrestricted -File 'C:\\TEST\\Scripts\\App3.ps1'    
 
}catch
{
  Write-Host "Error"

}

以下是安装应用程序的脚本之一 (App2.ps1) 的示例（所有脚本都遵循与此脚本相同的逻辑）

#Set logging 
$logFile = "C:\TEST\Logs\" + (get-date -format 'yyyyMMdd') + '_softwareinstall.log'
function Write-Log {
    Param($message)
    Write-Output "$(get-date -format 'yyyyMMdd HH:mm:ss') $message" | Out-File -Encoding utf8 $logFile -Append
}


#Install APP2 
$file = Test-Path "C:\TEST\Apps\APP2\APP2 x64 7.2.1.msi"
if($file)
{
   try{
        Write-Log "Installing App2"
        Start-Process msiexec.exe -Wait -ArgumentList '/i "C:\TEST\Apps\APP2\App2 x64 7.2.1.msi" ALLUSERS=1 AddLocal=MiniDriver,PKCS,UserConsole,Troubleshooting,Help /qn /norestart' 
        if(Test-Path -Path "C:\Program Files\HID Global\APP2\ac.app2.exe")
        {
            Write-Log "App2 installed"
        }
        else
        {
            Write-Log "There was a problem while installing App2"
        throw "There was a problem while installing App2"
        }
    }catch
    {
        Write-Log "[ERROR] There was a problem while starting the installation for App2"
        throw "[ERROR] There was a problem while starting the installation for App2"
    }
}
else
{
     Write-Log "Installation file for App2 not found"
     throw "Installation file for App2 not found"
}

Here is the output:

（出于保密目的，我模糊了应用程序的名称）

为什么安装APP2的脚本异常时主脚本继续执行？ 不应该停止并显示主脚本中 catch 部分所写的消息吗？

先感谢您

按照建议我添加了$ErrorActionPreference = 'Stop'到我的脚本的开头

$ErrorActionPreference = 'Stop'

try{
    powershell.exe -ExecutionPolicy Unrestricted -File 'C:\\TEST\\Scripts\\APP1.ps1'    
    powershell.exe -ExecutionPolicy Unrestricted -File 'C:\\TEST\\Scripts\\APP2.ps1'    
    powershell.exe -ExecutionPolicy Unrestricted -File 'C:\\TEST\\Scripts\\APP3.ps1'    
 
}catch
{
  Write-Host "Error"

}

输出只是消息“Error”，在 catch 部分中指出。

谢谢至@道格·毛雷尔 https://stackoverflow.com/users/4085331/doug-maurer