title: How to specify application pool identity user and password from PowerShell
body: <p>I have been having lots of difficulty automating the setup of a Web application and configuring IIS appropriately with the Application Pool Identity.  I am doing this in a Web application deployment script written in PowerShell. My requirement is that I need my PowerShell script to set the application pool identity user to a specific service account mydomain\svcuser and password.  Here is the sample code:</p>
  
  <pre><code>$pool = New-Item "IIS:\AppPools\MyAppPool" -Force
  $svcuser = "mydomain\svcuser"
  $pool.processModel.userName = $svcuser
  $password = "somepassword"
  $pool.processModel.password = $password
  $pool.processModel.identityType = 3
  $pool | Set-Item -ErrorAction Stop
  </code></pre>
  
  <p>When I run this, everything <em>appears</em> to work correctly--no errors are thrown and the application identity user name appears in IIS--but for some reason the password does not get set correctly, if at all.  Since it is a password I cannot verify whether it has been set, but I can conclude that it if it is, it is not set correctly.  It will not authenticate the resulting application pool user until I manually go in and enter the password in IIS.  As a result the application fails after being deployed to the Web server and requires manual intervention.</p>
  
  <p>Am I missing something here?</p>