Stopping website with powerShell script

Ive got a script for stopping a site: ``` param($HostName = "localhost", $SiteName) $server = $HostName $siteName = $SiteName $iis = [ADSI]"IIS://$server/W3SVC" $site = $iis.psbase.children | where { $_.keyType -eq "IIsWebServer" -AND $_.ServerComment -eq $siteName} $site.start() # SIG # Begin signature block ... ``` But when i run the script on a server with high security policies i get this error: ``` The following exception was thrown when trying to enumerate the collection: "Unknown error (0x80005000)". At D:\DeploymentScripts\Common\StopSite.ps1:6 char:8 + $site = <<<< $iis.psbase.children | where { $_.keyType -eq "IIsWebServer" -AND $_.ServerComment -eq $siteName} + CategoryInfo : NotSpecified: (:) [], ExtendedTypeSystemException + FullyQualifiedErrorId : ExceptionInGetEnumerator ``` From what I have read this might occur if i don't have access to the IIS , but im running the script as admin, should that not grant me the access i need ? Does the webadministration module give more access rights ? I don't import this since i didn't have to do this on the other servers, if i need to import the webadministration there is another problem, when i try i get a error saying the WebAdministrationAliases.ps1 is not digitally signed... I have tested the script on other servers with no problem, but this one got more strict policies as mentioned above, and its not a option to change the policies. Im running this on a Windows server 2008 R2, with IIS 7.5.