Get list of all VMs from a list of HV servers

hello everyone, 

i trying create ps script pull data list of hv servers, stored in csv file, , result must name of host , name of vms.

if run script 1 hv host works, i've added foreach , contect read list of hv servers , bring list of vms i've receive error "get-wmiobject : invalid namespace "root\virtualization". me on this?

script:

[parameter(mandatory=$true)]
[string]$hvhost,
$hvhost = get-content c:\hvservers.txt | {$_}
foreach ($i in $hvhost){
echo "$i";
get-vm |sort-object hostname |select-object hostname, name | export-csv c:\vmlist.txt -notypeinformation;
}

error:

get-wmiobject : invalid namespace "root\virtualization"
@ c:\windows\system32\windowspowershell\v1.0\modules\hyperv\hyperv.ps1:455 char:2
+  get-wmiobject -computername $server -namespace "root\virtualization" -query $wq ...
+  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + categoryinfo          : invalidargument: (:) [get-wmiobject], managementexception
    + fullyqualifiederrorid : getwmimanagementexception,microsoft.powershell.commands.getwmiobjectcommand

thanks, best regards.

hi,

are using csv file input? script not show that.

additionally, you're never using current loop iteration you'll never querying server in question.

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Windows Server  >  Windows PowerShell