PowerShell cmdlet Install-WindowsFeature called from C# errors and is not listed in the collections of commands

Question

I'm trying to install new features on a Windows Server 2012 system through PowerShell and C#. I am getting this error back when trying to call the Install-WindowsFeature cmdlet:

The term 'Install-WindowsFeature' is not recognized as the name of a cmdlet, function, script file, or operable program...

I can call other cmdlets though C# and even some of the other new ones. I did a Get-Command and Install-WindowsFeature, Remove-WindowsFeature, and Get-WindowsFeatures are not listed...but about 980 others are.

Why wouldn't I be able to call this cmdlet from my C# program, but when I go to PowerShell it calls it just fine?

runspace = RunspaceFactory.CreateRunspace();
runspace.Open();

Pipeline pipeline = runspace.CreatePipeline();
pipeline.Commands.AddScript("Install-WindowsFeature");
Collection<PSObject> output = pipeline.Invoke();

What module is that in? Maybe it is in a module that is not imported by in default with that overload of CreateRunspace. You can add ps modules to the InitialSessionState object that you pass to a different overload of CreateRunspace. — Mike Zboray
– Mike Zboray, Commented Oct 23, 2012 at 0:25
It is in the ServerManager module. I've never used the InitialSessionState object, I will have to look into that. — Ryan Watson
– Ryan Watson, Commented Oct 23, 2012 at 1:31
@mikez Tried your suggestion, still a no go. string[] modules = { "ServerManager" }; InitialSessionState iss = InitialSessionState.CreateDefault(); iss.ImportPSModule(modules); runspace = RunspaceFactory.CreateRunspace(iss); — Ryan Watson
– Ryan Watson, Commented Oct 23, 2012 at 2:44

K Mehta · Accepted Answer · 2012-10-29 02:58:47Z

1

Try this command instead of Install-WindowsFeature in your code:

Invoke-Expression "Powershell -Command {Import-Module ServerManager ; Install-WindowsFeature XXXX}"

edited Oct 29, 2012 at 2:58

K Mehta

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answered Oct 29, 2012 at 2:31

Vincent馬

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1 Comment

cowlinator Over a year ago

Import-Module : The specified module 'ServerManager' was not loaded because no valid module file was found in any module directory.

Peter Mortensen · Accepted Answer · 2018-11-15 05:55:50Z

1

Try compiling in x64. In Visual Studio go to menu Project → Properties → Build - Platform Target = x64.

edited Nov 15, 2018 at 5:55

Peter Mortensen

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answered Mar 27, 2014 at 22:20

user213583

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