ASP.NET Process Start PowerShell Script IIS 7.5 - asp.net

Question

All works fine on my dev machine but if deployed to IIS the process doesn't get started. I am starting a powershell script by
private void RunScript()
{
Process process = null;
try
{
int timeout = 1800000;
var startInfo = new ProcessStartInfo
{
FileName = #"powershell.exe",
Arguments = string.Format("{0} {1}", "\path\toscript", "myParam"),
UseShellExecute = false,
CreateNoWindow = true
};
process = Process.Start(startInfo);
process.WaitForExit(timeout);
}
finally
{
if (!process.HasExited)
{
if (process.Responding)
process.CloseMainWindow();
else
process.Kill();
}
if (process != null)
{
process.Close();
process.Dispose();
}
}
}
Here's what's configured for the app pool this is running under.
Process Model
->Identity = domain user who is a Domain Admin.
->Load User Profile = True
Web App
Authentication is Windows
What else do I need to configure to so that I can run the Process?

Answer 1

As Start-Automating suggested I eventually ended up doing this:
using (Runspace runSpace = RunspaceFactory.CreateRunspace())
{
try
{
runSpace.Open();
RunspaceInvoke scriptInvoker = new RunspaceInvoke(runSpace);
scriptInvoker.Invoke("Set-ExecutionPolicy Unrestricted");
using (Pipeline pipeLine = runSpace.CreatePipeline())
{
var myCommand = new Command(scriptPath);
var myParam1 = new CommandParameter("-paramName", "someValue");
myCommand.Parameters.Add(myParam1);
pipeLine.Commands.Add(myCommand);
pipeLine.Commands.Add("Out-String");
Collection<PSObject> returnObjects = pipeLine.Invoke();
runSpace.Close();
return returnObjects;
}
}
finally
{
runSpace.Close();
}
}
On the IIS server I executed the following powershell command "Set-ExecutionPolicy RemoteSigned"

Answer 2

It's much better to embed the PowerShell APIs the call the .exe
Here's an old link that will get you a PowerShell runspace embedded in ASP.NET per user:
http://powershellpipeworks.com/

Answer 3

Check the permissions of the file system where powershell.exe lives.
Also, check the Security Log in the Event Viewer for authentication errors and access violations.