Powershell在MDT任务序列中返回退出代码0或1

我想我是因为一件很简单的事而头疼。我已经做了两天了，不幸的是我想不出来

问题是，我在使用MDT部署Windows系统时使用了Powershell脚本。该脚本在任务序列中最后调用。在脚本中，我请求重新启动并重试任务，因为应用程序（Dell update tool）需要重新启动

这部分工作正常，因为在MDT TS中，它理解需要重新启动，也需要重新启动任务。计算机重新启动，然后重新运行相同的任务序列，但脚本从未被激发，而SMSTS.log确实表明它已成功启动并退出，代码为0

然后，当我在脚本中更改此代码时，我注意到退出代码始终为0。然后我发现我的powershell脚本的返回代码出错，并尝试了以下操作：

测试脚本：

$MyExitCode = 3010
Write-Host ('MyExitcode: [' + $MyExitCode + ']')
Write-Host ('LastExitCode: [' + $LastExitCode + ']')
Write-Host ''
Write-Host 'Setting MyExitCode to LastExitCode'
$LastExitCode = $MyExitCode
Write-Host 'New Result:'
Write-Host ('MyExitcode: [' + $MyExitCode + ']')
Write-Host ('LastExitCode: [' + $LastExitCode + ']')
Read-Host 'Debug Break' 
Write-Output $_
Exit $ExitCode

以管理员身份打开CMD，然后运行以下命令

CMD> powershell.exe -ExecutionPolicy bypass -File "Z:\Applications\Test\TestRerunTask.ps1"
CMD> echo $LastExitCode
CMD> 0

将参数

-File

替换为

-Command

将退出代码更改为1，但仍在SMSTS中。登录时显示退出代码为0

Snippet SMSTS.log任务序列称为

Test

!--------------------------------------------------------------------------------------------!  TSManager   13-2-2020 11:18:41  6200 (0x1838)
Expand a string: WinPEandFullOS                                                                 TSManager   13-2-2020 11:18:41  6200 (0x1838)
Executing command line: cscript.exe "%SCRIPTROOT%\ZTIApplications.wsf"                          TSManager   13-2-2020 11:18:41  6200 (0x1838)
Process completed with exit code 0                                                              TSManager   13-2-2020 11:19:02  6200 (0x1838)
!--------------------------------------------------------------------------------------------!  TSManager   13-2-2020 11:19:02  6200 (0x1838)
Successfully completed the action (Test) with the exit win32 code 0                             TSManager   13-2-2020 11:19:02  6200 (0x1838)
Executing in non SMS standalone mode. Ignoring send a task execution status message request     TSManager   13-2-2020 11:19:02  6200 (0x1838)
Set a global environment variable _SMSTSLastActionRetCode=0                                     TSManager   13-2-2020 11:19:02  6200 (0x1838)
Set a global environment variable _SMSTSLastActionName=Test                                     TSManager   13-2-2020 11:19:02  6200 (0x1838)
Set a global environment variable _SMSTSLastActionSucceeded=true                                TSManager   13-2-2020 11:19:02  6200 (0x1838)
Clear local default environment                                                                 TSManager   13-2-2020 11:19:02  6200 (0x1838)
The action (Test) requested a retry                                                             TSManager   13-2-2020 11:19:02  6200 (0x1838)
Created volatile registry entry for pending reboot initiated by this task sequence              TSManager   13-2-2020 11:19:02  6200 (0x1838)
The action (Test) initiated a reboot request                                                    TSManager   13-2-2020 11:19:02  6200 (0x1838)
Executing in non SMS standalone mode. Ignoring send a task execution status message request     TSManager   13-2-2020 11:19:02  6200 (0x1838)
****************************************************************************                    TSManager   13-2-2020 11:19:02  6200 (0x1838)
Execution engine result code: Reboot (2)                                                        TSManager   13-2-2020 11:19:02  6200 (0x1838)
Process completed with exit code 2147945410                                                     TSMBootstrap    13-2-2020 11:19:02  6168 (0x1818)
Exiting with return code 0x80070BC2                                                             TSMBootstrap    13-2-2020 11:19:02  6168 (0x1818)
----------------------
... More reboot stuff ...
----------------------
Expand a string: WinPEandFullOS                                                                 TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Executing command line: cscript.exe "%SCRIPTROOT%\ZTIApplications.wsf"                          TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Process completed with exit code 0                                                              TSManager   13-2-2020 11:19:34  8652 (0x21CC)
!--------------------------------------------------------------------------------------------!  TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Successfully completed the action (Test) with the exit win32 code 0                             TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Executing in non SMS standalone mode. Ignoring send a task execution status message request     TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Set a global environment variable _SMSTSLastActionRetCode=0                                     TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Set a global environment variable _SMSTSLastActionName=Test                                     TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Set a global environment variable _SMSTSLastActionSucceeded=true                                TSManager   13-2-2020 11:19:34  8652 (0x21CC)
Clear local default environment                                                                 TSManager   13-2-2020 11:19:34  8652 (0x21CC)

---

经过更多的调试和谷歌搜索，我找到了我想要的答案。首先我找到了一个主题，然后是一个主题。这些话题为我指明了正确的方向。事实证明，我正在MDT任务序列中将Powershell脚本作为

应用程序运行。我发现将脚本添加为应用程序很容易，因为我可以很容易地将它们分配到任务序列，但是
返回代码的魔力就消失了。
ZTIapplications
脚本以
powershell.exe-ExecutionPolicy bypass-Command“&{&'%deployroot%\Applications\Test\TestRerunTask.ps1'；Exit$LastExitCode}”的形式运行powershell脚本
此脚本捕获返回代码，但返回代码不会传回任务序列
SMSTS
，因此它假定“应用程序”已成功安装。从MDT调用脚本
运行Powershell脚本
一切正常

我仍在寻找在MDT中将Powershell脚本用作应用程序的方法，以保持返回代码始终正常工作，但同时我有一个合适的解决方法，
$LastExitCode
是一个Powershell。包含上次运行的基于Windows的程序的退出代码。