# Having problems with Get-WmiObject in AD
**URL:** https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180
**Category:** PowerShell Help
**Created:** [September 23, 2019, 5:26am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180 "2019-09-23T05:26:43Z")
**Posts on this page:** 14
**Page:** 1
### Author:  [@dady](https://forums.powershell.org/u/dady)
#### Post date: [September 23, 2019, 5:26am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/1 "2019-09-23T05:26:43Z")
Hi all,
I posted [this](https://powershell.org/forums/topic/function-that-will-determined-if-a-computer-is-laptop-or-desktop/) before and i know that i wrote that everything works fine but i was wrong.
I needed it for something in my job and we delayed the project and that’s why i didn’t use it up to now. The whole script eventually doing half the job.
Now, it seems that whenever i run the command where the computer name comes from the command "Get-ADComputer " it return an error of RPC on the “Get-WmiObject” but if i put manually the name of the computer it runs good.
The functions is:
```
#Function Desktop or Laptop
Function Detect-Laptop
{
Param ( [string] $comp)
$hardwaretype = (Get-Wmiobject -Class 'Win32_computersystem' -ComputerName $comp | Select-Object pcsystemtype)
if ($hardwaretype -ne 2)
{ $isLaptop = $true }
else {$isLaptop = $false}
$isLaptop
}
```
Thanks in advance.
---
### Author:  [@rejikodiyil](https://forums.powershell.org/u/rejikodiyil)
#### Post date: [September 23, 2019, 5:37am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/2 "2019-09-23T05:37:56Z")
Are you using this function in a pipeline or calls this function separately in the script?
Can you post the script block where you are calling this function?
---
### Author:  [@aapeli-hietikko](https://forums.powershell.org/u/aapeli-hietikko)
#### Post date: [September 23, 2019, 5:46am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/3 "2019-09-23T05:46:39Z")
Hi,
Your $hardwareType returns as an object so either add -expandProperty in the Select-Object or add .pcsystemtype to your if statetment. Also, I think you should have -eq instead of -ne
[pre]
Function Detect-Laptop
{
Param ( [string] $comp)
$hardwaretype = (Get-Wmiobject -Class ‘Win32\_computersystem’ -ComputerName $comp | Select-Object -ExpandProperty pcsystemtype)
if ($hardwaretype -eq 2)
{ $isLaptop = $true }
else
{$isLaptop = $false}
$isLaptop
}
[/pre]
Or
[pre]
Function Detect-Laptop
{
Param ( [string] $comp)
$hardwaretype = (Get-Wmiobject -Class ‘Win32\_computersystem’ -ComputerName $comp | Select-Object pcsystemtype)
if ($hardwaretype.pcsystemtype -eq 2)
{ $isLaptop = $true }
else
{$isLaptop = $false}
$isLaptop
}
[/pre]
[https://docs.microsoft.com/en-us/windows/win32/cimwin32prov/win32-computersystem](https://docs.microsoft.com/en-us/windows/win32/cimwin32prov/win32-computersystem)
**PCSystemType**
\
\Data type: **uint16** \
\Access type: Read-only\
\Qualifiers: [**MappingStrings**](https://docs.microsoft.com/windows/desktop/WmiSdk/standard-qualifiers) (“”)\
\
Type of the computer in use, such as laptop, desktop, or Tablet.
**Unspecified** (0)
**Desktop** (1)
**Mobile** (2)
**Workstation** (3)
**Enterprise Server** (4)
**SOHO Server** (5)
---
### Author:  [@dady](https://forums.powershell.org/u/dady)
#### Post date: [September 23, 2019, 6:05am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/4 "2019-09-23T06:05:31Z")
```
$SourceOU = "OU=TestOU,OU= ******,DC=****** ,DC=local"
$Computers = Get-ADComputer -Filter * -SearchBase $SourceOU -Properties OperatingSystem
foreach ($Computer in $Computers)
{
If(Detect-Laptop $Computer.Name)
{
CheckOSlap $Computer
}
else
{
CheckOSDesk $Computer
}
}
```
---
### Author:  [@dady](https://forums.powershell.org/u/dady)
#### Post date: [September 23, 2019, 6:09am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/5 "2019-09-23T06:09:35Z")
Thabks Aapeli Hietikko,
But that didn’t help. I’m getting the error on the Get-WmiObject command.
This is the error, where line 23 and char 18 is the start of the command in the Function
```
Get-Wmiobject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
At C:\Users\ **** \Desktop\Arrange_and Clean_Final_4_win10_only.ps1:23 char:18
+ $hardwaretype = (Get-Wmiobject -Class 'Win32_computersystem' -ComputerName $comp ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Get-WmiObject], COMException
+ FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand
```
---
### Author:  [@aapeli-hietikko](https://forums.powershell.org/u/aapeli-hietikko)
#### Post date: [September 23, 2019, 7:23am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/6 "2019-09-23T07:23:49Z")
Can you run it locally? Maybe this helps you: [https://itluke.online/2017/11/08/solved-exception-from-hresult-0x800706ba/](https://itluke.online/2017/11/08/solved-exception-from-hresult-0x800706ba/)
---
### Author:  [@dady](https://forums.powershell.org/u/dady)
#### Post date: [September 23, 2019, 7:29am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/7 "2019-09-23T07:29:37Z")
I’m running the script from the AD server. We disabled firewalls on all comps in the domain by GPO.
---
### Author:  [@dady](https://forums.powershell.org/u/dady)
#### Post date: [September 23, 2019, 7:45am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/8 "2019-09-23T07:45:49Z")
Just a thought… when i run this command in power shell
```
Get-Wmiobject -Class 'Win32_computersystem' -ComputerName $comp | Select-Object -ExpandProperty pcsystemtype
```
Does it runs on the object in the AD or checks against the real computer?
---
### Author:  [@aapeli-hietikko](https://forums.powershell.org/u/aapeli-hietikko)
#### Post date: [September 23, 2019, 7:59am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/9 "2019-09-23T07:59:38Z")
it runs against the real computer and needs access there. I’d never run such script from domain controller. And how do you populate the $comp?
---
### Author:  [@firmbyte](https://forums.powershell.org/u/firmbyte)
#### Post date: [September 23, 2019, 9:08am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/10 "2019-09-23T09:08:47Z")
I suspect you’re getting that error as one of the servers listed in your AD doesn’t exist any more. Perhaps add a step to ping the servers before querying them…
---
### Author:  [@showboat](https://forums.powershell.org/u/showboat)
#### Post date: [September 23, 2019, 10:31am UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/11 "2019-09-23T10:31:28Z")
Couple of suggestions:
1.) Can you add a write-output and gettype() to ensure your computername is actually a computername!
`Function Detect-Laptop`
`{`
`Param ( [string] $comp)`
`write-output “Computer targetted = $comp”`
`$comp.gettype()`
`$hardwaretype = (Get-Wmiobject -Class ‘Win32_computersystem’ -ComputerName $comp | Select-Object pcsystemtype)`
`if ($hardwaretype.pcsystemtype -eq 2)`
`{ $isLaptop = $true }`
`else`
`{$isLaptop = $false}`
`$isLaptop`
`}`
2.) Can you run the command against a single server on its own (preferably a server that failed when run as part of the larger script):
`(Get-Wmiobject -Class ‘Win32_computersystem’ -ComputerName server1 | Select-Object pcsystemtype)`
---
### Author:  [@aapeli-hietikko](https://forums.powershell.org/u/aapeli-hietikko)
#### Post date: [September 23, 2019, 12:29pm UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/12 "2019-09-23T12:29:57Z")
I wouldnt use function at all, but I’d take a route like this.
[pre]
$adComputers = get-adcomputer -filter \*
foreach ($adComputer in $adComputers)
{
try {
$wmiQuery = Get-Wmiobject -Class ‘Win32\_computersystem’ -ComputerName $adComputer.name -ErrorAction Stop
if ($wmiQuery.pcsystemtype -eq 2) {$stat = “laptop”}
else {$stat = “somethingElse”}
} #Try
Catch {
$stat = “noConnection”
}
[PSCustomObject][Ordered]@{
‘ComputerName’ = $adComputer.name
‘status’ = $stat
}
}
[/pre]
---
### Author:  [@dady](https://forums.powershell.org/u/dady)
#### Post date: [September 24, 2019, 11:24pm UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/13 "2019-09-24T23:24:40Z")
Thanks Aapeli Hietikko,
I took your script and modified it to my needs and it works perfectly.
I was about to give up and thanks to you and others on this forum now i can continue with my project.
Cheers :-)
---
### Author:  [@dotnVo](https://forums.powershell.org/u/dotnVo)
#### Post date: [May 16, 2024, 8:31pm UTC](https://forums.powershell.org/t/having-problems-with-get-wmiobject-in-ad/13180/14 "2024-05-16T20:31:19Z")