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PORunning a powershell command in C# errors with, "Cannot invoke this function because the current host does not implement it"
 

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    <p>I have an application that I use to run Exchange Powershell commands inside C# code like below. This is an example of the relevant lines I use to run the powershell command.</p> <pre><code> RunspaceConfiguration rsConfig = RunspaceConfiguration.Create(); PSSnapInException snapInException = null; //load Exchange shell rsConfig.AddPSSnapIn("Microsoft.Exchange.Management.PowerShell.E2010", out snapInException); Runspace runSpace = RunspaceFactory.CreateRunspace(rsConfig); //open runspace runSpace.Open(); //setup pipeline Pipeline pipeLine = runSpace.CreatePipeline(); String sScript = "get-mailbox -identity 'rj'"; //add script to pipeline pipeLine.Commands.AddScript(sScript); //run the script pipeLine.Invoke(); pipeLine.Dispose(); </code></pre> <p>This code works perfect in all cases until now. the script I am trying to run instead of the one above is to set the RetentionPolicy for a mailbox. The script I am trying to run looks like this:</p> <p>Set-Mailbox -Identity 'rj' -RetentionPolicy 'Main Campus Retention Policy'</p> <p>When I run this in powershell itself it works perfectly but when I try to run it using the code below I get the error, "Cannot invoke this function because the current host does not implement it."</p> <p>From this error, it almost seems like the command that runs in C# cannot run the RetentionPolicy command but that doesn't make much sense. I have Googled this and tried everything suggested but no luck. </p> <p>If anyone knows why this is happening, it would be very helpful.</p>
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