"dynamic operations can only be performed in homogenous appdomain" error while launching PowerShell

powershell automation code-access-security
user1019042 picture user1019042 · Apr 22, 2013 · Viewed 25.3k times · Source

I have a powershell script that I am trying to execute from WCF REST service.I am using the System.Management.Automation and System.Management.Automation.Runspaces assemblies.

The C# code looks like this:

Command command = new Command(path);
command.Parameters.Add(param);
RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create();
using (Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration))
{
    runspace.Open();
    ... other code
}

This error happens here once I try to execute the open statement:

Dynamic operations can only be performed in homogenous AppDomain.

I have looked and looked but nothing worked. I have tried adding this line to my web.config: But it didn't do anything for me.

Do you have thoughts?

Answer

Andy Arismendi picture Andy Arismendi · Apr 23, 2013

I just googled that error and it seemed to be related to legacyCasPolicy being set to true as discussed here and here. It turns setting it to false resolved your issue as well. Detailed information about this configuration element can be found here.

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