title: PowerShell -ErrorAction SilentlyContinue Does not work with Get-ADUser
body: <p>Im having issues getting -ErrorAction SilentlyContinue to work with cmdlet 'Get-ADUser'</p>
  
  <p>This doesn't work, the error is displayed with or without -ErrorAction?</p>
  
  <pre><code>  get-aduser "JSmith" -ErrorVariable Err -ErrorAction SilentlyContinue
    if ($Err){write-host "This is an error!!!!"}
  </code></pre>
  
  <p>This works (No error is display and silently continues, under the same conditions?</p>
  
  <pre><code> get-childitem z: -ErrorVariable Err -ErrorAction SilentlyContinue
   if ($Err){write-host "This is an error!!!!"}
  </code></pre>