Invoke-CommandAs -AsSystem broke on 2012 R2 ENG

[PierreGUILBAUD]

Hello,

I have a issue on 2012 R2 ENG :

PS C:\Users\Administrator> Invoke-CommandAs -ScriptBlock { Get-Process } -AsSystem New-ScheduledTaskAction : Invalid class At C:\Program Files\WindowsPowerShell\Modules\Invoke-CommandAs\3.1.6\private\Invoke-ScheduledTask.ps1:89 char:49

• ... 'Action'] = New-ScheduledTaskAction -Execute $ScheduledJob.PSExecutio ...

• 
  + CategoryInfo          : MetadataError: (PS_ScheduledTask:Root/Microsoft/...S_ScheduledTask) [New-ScheduledTaskAc
  tion], CimException
  + FullyQualifiedErrorId : HRESULT 0x80041010,New-ScheduledTaskAction

New-ScheduledTaskPrincipal : Invalid class At C:\Program Files\WindowsPowerShell\Modules\Invoke-CommandAs\3.1.6\private\Invoke-ScheduledTask.ps1:91 char:56

• ... incipal'] = New-ScheduledTaskPrincipal -UserID "NT AUTHORITY\SYSTEM" ...

• 
  + CategoryInfo          : MetadataError: (PS_ScheduledTask:Root/Microsoft/...S_ScheduledTask) [New-ScheduledTaskPr
  incipal], CimException
  + FullyQualifiedErrorId : HRESULT 0x80041010,New-ScheduledTaskPrincipal

Invoke-ScheduledTask : Cannot validate argument on parameter 'Principal'. The argument is null or empty. Provide an argument that is not null or empty, and then try the command again. At C:\Program Files\WindowsPowerShell\Modules\Invoke-CommandAs\3.1.6\public\Invoke-CommandAs.ps1:399 char:17

• Invoke-ScheduledTask @Parameters

• 
  + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
  + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Invoke-ScheduledTask

The version of powershell is 5.1

Thank for your help.