Powershell command fails with "Invalid namespace" only when running as script, not in console

Question

The following script fails on the last line with Get-WmiObject : Invalid namespace:

$password = ConvertTo-SecureString "password" -AsPlainText -Force
$cred= New-Object System.Management.Automation.PSCredential ("domain\user", $password )
Write-Host "Entering PS Session..."
Enter-PSSession -Computer hyperVServer -Credential $cred
Start-Sleep -s 5
$server = "servername"

$query = "SELECT * FROM Msvm_ComputerSystem WHERE ElementName='" + $server + "'"
$VM = get-wmiobject -query $query -namespace "root\virtualization" -computername "."

However, when I enter this one-by-one into the console, it runs without issue.

I've added the Start-Sleep due to some timing issues... the session takes a few seconds to actually open. Any ideas why that line would fail only when this is running as a script?

jbsmith · Accepted Answer · 2013-08-08 18:48:03Z

2

Enter-PSSession is intended only for interactive use. If you want to run commands on a remote system in a script (non-interactively), you'll need to use Invoke-Command instead. Please run Get-Help Invoke-Command -Full for more details.

answered Aug 8, 2013 at 18:48

jbsmith

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Cole9350 · Accepted Answer · 2013-08-08 18:47:22Z

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Not sure why it works in one and not the other, but I assuming it's something to do with your remote session. Here's a list of commands that do not require a remote session, but rather just take a computer name. http://technet.microsoft.com/en-us/library/dd819505.aspx

$password = ConvertTo-SecureString "password" -AsPlainText -Force
$cred= New-Object System.Management.Automation.PSCredential ("domain\user", $password )
$server = "servername"
$query = "SELECT * FROM Msvm_ComputerSystem WHERE ElementName=$server"
$VM = get-wmiobject -query $query -namespace "root\virtualization" -computername hyperVServer -credential $cred

Edited your query concat too.

answered Aug 8, 2013 at 18:47

Cole9350

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