Jump to content
Sign in to follow this  

Strange WMI problem on Intel hardware

Recommended Posts

The rest of my post isn't showing up... Here it is in a new reply, maybe that will help.

I have determined what is causing this error, and at which point, but not why and have not been able to determine a way to program around it. I am actually seeing this error in any application that reads from the WMI, here is an example script:
$sWMIService = "winmgmts:\\" & @ComputerName & "\root\CIMV2"
$objWMIService = ObjGet($sWMIService)
IF IsObj($objWMIService) Then
    $colItems = $objWMIService.ExecQuery("SELECT * FROM Win32_ComputerSystem")
    If IsObj($colItems) Then
        For $oItem In $colItems
            $sModel = StringReplace( $oItem.Model , "/" , "" )
The application reads from WMI to get the Model number for 2 reasons. 1 it displays it on the screen and 2 it looks up that value on the server so that it can generate the GUI. Obviously, if the field is empty an error is generated. However, it does not care if it cannot find the value on the server, as if the value does not match, it shows a default message. So the way it is currently written, I know exactly what the error means when it appears. It means the field is empty. There was only 1 hardware I had where the field actually WAS empty, and it was a prototype unit. If a production unit had no value there, we would defect it out for obvious reasons.
Now on to where the error occurs. The application is compiled for 64bit.
Case where error occurs (not 100% of hardware, but 100% on the hardware it happens on unless workaround.)
- Intel BIOS has both UEFI and Legacy Boot enabled.
- BIOS-level PXE* boot to WinPE 4.0 x64
- Run application
- WMI value is an object, but the object is empty, or null.
* I don't think PXE is a requirement, but I don't boot via CD or USB.
- Disable UEFI boot in the BIOS.
If you can think of any thing I could try to find out what the problem could be, let me know. I may end up posting this question elsewhere as well.
For those who are interested, hardware effected:
Intel DB75EN
Intel NUC (D33217GKE/DC3217YE)
Edited by Tripredacus

Share this post

Link to post
Share on other sites

And...? Did you mean to put this in Chat, or do you have a specific script to post that is giving you problems??


Edit: LOL, I was wondering - not like you to post a bunch of nothing like that :)

Edited by JLogan3o13

Share this post

Link to post
Share on other sites

What variable is not being declared correctly? (You should do some error trapping see @error and seterror()) also you could run the script in scite(F5) on an affected machine to show when the program fails)


It is not a problem with variables being declared incorrectly.

I already know what the "error" is, the variable is an object but there is no data in it.

I have not been able to replicate this from a running OS, only from WinPE.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Similar Content

    • By Dwalfware
      Another head scratched
      Anyone solve how to get the IPV6 from WMI?
      I followed the usual SELECT * FROM Win32_NetworkAdapter WHERE NetConnectionID='" & GUICtrlRead($cboAdapters) & "'
      get the index 
      port it to 
      Local $query = $objWMIService.ExecQuery("SELECT * FROM Win32_NetworkAdapterConfiguration WHERE Index = " & _GetSelectedNIC(), "WQL", 0x30 )
      All i can see is IPv4 addresses
      My question is is there another place the IPv6 information is hiding? I configured my LAN with IPV6 and my wireless with IPv4 so I can see what shows.
      Thanks in Advance.
      PS. I did try google
    • By Dwalfware
      Hi Folks
      Can not get my head around this one.
      This function gets the DNS object s
      If you have two DNS entries fine. but if you have only one! Trouble
      $objItem.DNSServerSearchOrder[0] = Primary DNS
      $objItem.DNSServerSearchOrder[1] = Secondry DNS not always there. I need a way to return 0 if not there or the IP if its there.
      Or is there a way to tell how many objects there are in the "[?]"
      I'm terrible at WMI errors, thanks for help in advance.
      Func _GETcurrentNICinfo2() $oErrors = ObjEvent("AutoIt.Error", "Error_Handle") Local $DnsSecondry Local $objWMIService = ObjGet( "winmgmts:\\" & @ComputerName & "\root\CIMV2" ) Local $query = $objWMIService.ExecQuery("SELECT DNSServerSearchOrder FROM Win32_NetworkAdapterConfiguration WHERE Index = " & _GetSelectedNIC(), "WQL", 0x30 ) If @error Then Return 0 If NOT IsObj($query) Then Return 0 Else For $objItem In $query Return $objItem.DNSServerSearchOrder[1] next Endif EndFunc  
    • By leomoon
      I'm having trouble getting information from Win32_Processor:
      How does this WMI Query work? Let's say I need to query VMMonitorModeExtensions, Level, ProcessorId, and ProcessorType.
      How would this work?
    • By colombeen
      Hi everyone, I created a function to gather bitlocker information. It can tell you whether or not a drive is protected, which encryption method is being used, ...
      I tried to cover all the details in the function description
      The function (and 3 "internal" functions) :
      ; #FUNCTION# ==================================================================================================================== ; Name...........: _BitlockerDriveInfo ; Description ...: Get Bitlocker information for one or multiple drives ; Syntax.........: _BitlockerDriveInfo([$sDrive[, $sComputer = @ComputerName[, $bDebug = False]]]) ; Parameters ....: $sDrive - Optional: The drive. Allowed values are: ; |"" - Get the info for all available drives ; |Letter: - Get the info for the specific drive ; $sComputer - Optional: The computer from which the info should be requested ; $bDebug - Optional: Shows the hex ReturnValue from the WMI methods if set to True ; Return values .: Success - Returns a 2D array with the following information ; |[string] Drive Letter ; |[string] Drive Label ; |[string] Volume Type ; |[bool] Initialized For Protection ; |[string] Protection Status ; |[string] Lock Status ; |[bool] Auto Unlock Enabled ; |[bool] Auto Unlock Key Stored ; |[string] Conversion Status ; |[string] Encryption Method ; |[int] Encryption Percentage ; |[string] Wiping Status ; |[int] Wiping Percentage ; |[array] Key Protectors (Or [string] "None" if the drive isn't protected) ; Failure - 0, sets @error to: ; |1 - There was an issue retrieving the COM object. @extended returns error code from ObjGet ; |2 - The specified drive in $Drive doesn't exist ; |3 - There was an issue running the WMI query ; Author ........: colombeen ; Modified.......: ; Remarks .......: Requires to be run with admin elevation. Windows Vista or newer! ; A BIG THANKS to everyone from the community who contributed! ; Related .......: ; Link ..........: ; Example .......: #include <Array.au3> ; $Header = "Drive Letter|Drive Label|Volume Type|Initialized For Protection|Protection Status|" & _ ; "Lock Status|Auto Unlock Enabled|Auto Unlock Key Stored|Conversion Status|Encryption " & _ ; "Method|Encryption Percentage|Wiping Status|Wiping Percentage|Key Protectors" ; _ArrayDisplay(_BitlockerDriveInfo(), "Bitlocker Drive Info", "", 64, Default, $Header) ; =============================================================================================================================== Func _BitlockerDriveInfo($sDrive = "", $sComputer = @ComputerName, $bDebug = False) Local $aConversionStatusMsg[7] = ["Unknown", "Fully Decrypted", "Fully Encrypted", "Encryption In Progress", "Decryption In Progress", "Encryption Paused", "Decryption Paused"] Local $aEncryptionMethodMsg[9] = ["Unknown", "None", "AES_128_WITH_DIFFUSER", "AES_256_WITH_DIFFUSER", "AES_128", "AES_256", "HARDWARE_ENCRYPTION", "XTS_AES_128", "XTS_AES_256"] Local $aKeyProtectorTypeMsg[11] = ["Unknown or other protector type", "Trusted Platform Module (TPM)", "External key", "Numerical password", "TPM And PIN", "TPM And Startup Key", "TPM And PIN And Startup Key", "Public Key", "Passphrase", "TPM Certificate", "CryptoAPI Next Generation (CNG) Protector"] Local $aLockStatusMsg[3] = ["Unknown", "Unlocked", "Locked"] Local $aProtectionStatusMsg[3] = ["Unprotected", "Protected", "Unknown"] Local $aVolumeTypeMsg[3] = ["Operating System Volume", "Fixed Data Volume", "Portable Data Volume"] Local $aWipingStatusMsg[5] = ["Unknown", "Free Space Not Wiped", "Free Space Wiped", "Free Space Wiping In Progress", "Free Space Wiping Paused"] Local $iRow = 0 Local $sRunMethod, $objWMIService, $objWMIQuery, $sDriveFilter, $iProtectionStatus, $iLockStatus, $bIsAutoUnlockEnabled, $bIsAutoUnlockKeyStored, $iConversionStatus, $iEncryptionPercentage, $iEncryptionFlags, $iWipingStatus, $iWipingPercentage, $iEncryptionMethod, $aVolumeKeyProtectorID, $aVolumeKeyProtectors, $iKeyProtectorType $objWMIService = ObjGet("winmgmts:{impersonationLevel=impersonate,authenticationLevel=pktPrivacy}!\\" & $sComputer & "\root\CIMV2\Security\MicrosoftVolumeEncryption") If @error Then Return SetError(1, @error, 0) If $sDrive <> "" Then Local $iDriveType = _WMIPropertyValue("DriveType", "Win32_LogicalDisk", "WHERE DeviceID='" & $sDrive & "'", Default, $sComputer) If @error Or ($iDriveType <> 2 And $iDriveType <> 3) Then Return SetError(2, 0, 0) $sDriveFilter = " WHERE DriveLetter='" & $sDrive & "'" EndIf $objWMIQuery = $objWMIService.ExecQuery("SELECT * FROM Win32_EncryptableVolume" & $sDriveFilter, "WQL", 0) If Not IsObj($objWMIQuery) Then Return SetError(3, 0, 0) Local $aResult[$objWMIQuery.count][14] For $objDrive In $objWMIQuery If $bDebug Then ConsoleWrite(@CRLF & "+> " & $objDrive.DriveLetter & @CRLF) If _WMIMethodExists($objDrive, "GetConversionStatus") Then $sRunMethod = $objDrive.GetConversionStatus($iConversionStatus, $iEncryptionPercentage, $iEncryptionFlags, $iWipingStatus, $iWipingPercentage) If $bDebug Then ConsoleWrite("!> GetConversionStatus 0x" & Hex($sRunMethod) & @CRLF) Else $iConversionStatus = -1 $iWipingStatus = -1 $iEncryptionPercentage = 0 $iWipingPercentage = 0 EndIf If _WMIMethodExists($objDrive, "GetEncryptionMethod") Then $sRunMethod = $objDrive.GetEncryptionMethod($iEncryptionMethod) If $bDebug Then ConsoleWrite("!> GetEncryptionMethod 0x" & Hex($sRunMethod) & @CRLF) Else $iEncryptionMethod = 0 EndIf If _WMIMethodExists($objDrive, "GetKeyProtectors") Then $sRunMethod = $objDrive.GetKeyProtectors("0", $aVolumeKeyProtectorID) If $bDebug Then ConsoleWrite("!> GetKeyProtectors 0x" & Hex($sRunMethod) & @CRLF) Else $aVolumeKeyProtectorID = 0 EndIf If _WMIMethodExists($objDrive, "GetLockStatus") Then $sRunMethod = $objDrive.GetLockStatus($iLockStatus) If $bDebug Then ConsoleWrite("!> GetLockStatus 0x" & Hex($sRunMethod) & @CRLF) Else $iLockStatus = -1 EndIf If _WMIMethodExists($objDrive, "GetProtectionStatus") Then $sRunMethod = $objDrive.GetProtectionStatus($iProtectionStatus) If $bDebug Then ConsoleWrite("!> GetProtectionStatus 0x" & Hex($sRunMethod) & @CRLF) Else $iProtectionStatus = 2 EndIf If _WMIMethodExists($objDrive, "IsAutoUnlockEnabled") Then $sRunMethod = $objDrive.IsAutoUnlockEnabled($bIsAutoUnlockEnabled) If $bDebug Then ConsoleWrite("!> IsAutoUnlockEnabled 0x" & Hex($sRunMethod) & @CRLF) Else $bIsAutoUnlockEnabled = "Unknown" EndIf If _WMIMethodExists($objDrive, "IsAutoUnlockKeyStored") Then $sRunMethod = $objDrive.IsAutoUnlockKeyStored($bIsAutoUnlockKeyStored) If $bDebug Then ConsoleWrite("!> IsAutoUnlockKeyStored 0x" & Hex($sRunMethod) & @CRLF) Else $bIsAutoUnlockKeyStored = "Unknown" EndIf If IsArray($aVolumeKeyProtectorID) And UBound($aVolumeKeyProtectorID) > 0 Then Dim $aVolumeKeyProtectors[UBound($aVolumeKeyProtectorID)][2] For $i = 0 To UBound($aVolumeKeyProtectorID) - 1 $aVolumeKeyProtectors[$i][0] = $aVolumeKeyProtectorID[$i] If _WMIMethodExists($objDrive, "GetKeyProtectorType") Then If $objDrive.GetKeyProtectorType($aVolumeKeyProtectorID[$i], $iKeyProtectorType) = 0 Then $aVolumeKeyProtectors[$i][1]= $aKeyProtectorTypeMsg[$iKeyProtectorType] Else $aVolumeKeyProtectors[$i][1]= "Unknown" EndIf Else $aVolumeKeyProtectors[$i][1] = "Unknown" EndIf Next Else $aVolumeKeyProtectors = "None" EndIf ; DriveLetter $aResult[$iRow][0] = $objDrive.DriveLetter ; DriveLabel $aResult[$iRow][1] = _WMIPropertyValue("VolumeName", "Win32_LogicalDisk", "WHERE DeviceID='" & $objDrive.DriveLetter & "'", Default, $sComputer) ; VolumeType If _WMIPropertyExists($objDrive, "VolumeType") Then $aResult[$iRow][2] = $aVolumeTypeMsg[$objDrive.VolumeType] Else If $objDrive.DriveLetter = _WMIPropertyValue("SystemDrive", "Win32_OperatingSystem", "", Default, $sComputer) Then $aResult[$iRow][2]= $aVolumeTypeMsg[0] ElseIf _WMIPropertyValue("DriveType", "Win32_LogicalDisk", "WHERE DeviceID='" & $objDrive.DriveLetter & "'", Default, $sComputer) = 3 Then $aResult[$iRow][2]= $aVolumeTypeMsg[1] ElseIf _WMIPropertyValue("DriveType", "Win32_LogicalDisk", "WHERE DeviceID='" & $objDrive.DriveLetter & "'", Default, $sComputer) = 2 Then $aResult[$iRow][2]= $aVolumeTypeMsg[2] Else $aResult[$iRow][2]= "Unknown" EndIf EndIf ; IsVolumeInitializedForProtection If _WMIPropertyExists($objDrive, "IsVolumeInitializedForProtection") Then $aResult[$iRow][3] = $objDrive.IsVolumeInitializedForProtection Else $aResult[$iRow][3] = "Unkown" EndIf ; ProtectionStatus $aResult[$iRow][4] = $aProtectionStatusMsg[$iProtectionStatus] ; LockStatus $aResult[$iRow][5] = $aLockStatusMsg[$iLockStatus + 1] ; IsAutoUnlockEnabled $aResult[$iRow][6] = $bIsAutoUnlockEnabled ; IsAutoUnlockEnabled $aResult[$iRow][7] = $bIsAutoUnlockKeyStored ; ConversionStatus $aResult[$iRow][8] = $aConversionStatusMsg[$iConversionStatus + 1] ; EncryptionMethod $aResult[$iRow][9] = $aEncryptionMethodMsg[$iEncryptionMethod + 1] ; EncryptionPercentage $aResult[$iRow][10] = $iEncryptionPercentage ; WipingStatus $aResult[$iRow][11] = $aWipingStatusMsg[$iWipingStatus + 1] ; WipingPercentage $aResult[$iRow][12] = $iWipingPercentage ; KeyProtectors $aResult[$iRow][13] = $aVolumeKeyProtectors $iRow += 1 Next _ArraySort($aResult) Return $aResult EndFunc ;==>_BitlockerDriveInfo Func _WMIPropertyExists($Object, $Property) If Not IsObj($Object) Then Return False For $sProperty In $Object.Properties_ If $sProperty.Name = $Property Then Return True Next Return False EndFunc ;==>_WMIPropertyExists Func _WMIMethodExists($Object, $Method) If Not IsObj($Object) Then Return False For $sMethod In $Object.Methods_ If $sMethod.Name = $Method Then Return True Next Return False EndFunc ;==>_WMIMethodExists Func _WMIPropertyValue($sProperty = "", $sClass = "", $sFilter = "", $sNamespace = Default, $sComputer = @ComputerName) Local $objWMIService, $objWMIQuery If $sClass = "" Or $sProperty = "" Then Return SetError(1, 0, 0) If $sFilter <> "" Then $sFilter = " " & $sFilter If $sNamespace = Default Then $sNamespace = "\root\CIMV2" $objWMIService = ObjGet("winmgmts:{impersonationLevel=impersonate,authenticationLevel=pktPrivacy}!\\" & $sComputer & $sNamespace) If @error Then Return SetError(2, @error, 0) $objWMIQuery = $objWMIService.ExecQuery("SELECT * FROM " & $sClass & $sFilter, "WQL", 0x30) If Not IsObj($objWMIQuery) Then Return SetError(3, 0, 0) For $objItem In $objWMIQuery For $Property In $objItem.Properties_ If $Property.Name = $sProperty Then Return $Property.Value EndIf Next Next Return SetError(4, 0, 0) EndFunc ;==>_WMIPropertyValue  
      Example 1:
      #RequireAdmin #include <array.au3> ; Get information on all available drives Global $test = _BitlockerDriveInfo() If @error Then ConsoleWrite("!> _BitlockerDriveInfo() error: " & @error & ". extended: " & @extended & @CRLF) ElseIf IsArray($test) Then _ArrayDisplay($test, "Bitlocker Drive Info", "", 64, Default, "Drive Letter|Drive Label|Volume Type|Initialized For Protection|Protection Status|Lock Status|Auto Unlock Enabled|Auto Unlock Key Stored|Conversion Status|Encryption Method|Encryption Percentage|Wiping Status|Wiping Percentage|Key Protectors") ; Display the Key Protectors for the first record If IsArray($test[0][13]) Then _ArrayDisplay($test[0][13]) EndIf Example 2:
      #RequireAdmin #include <array.au3> ; Get information on the C-drive of the current computer + show extra information in the console Global $test = _BitlockerDriveInfo("C:", @ComputerName, True) If @error Then ConsoleWrite("!> _BitlockerDriveInfo() error: " & @error & ". extended: " & @extended & @CRLF) ElseIf IsArray($test) Then ConsoleWrite("Bitlocker information on the " & $test[0][0] & " drive" & @CRLF) ConsoleWrite("Protection Status: " & $test[0][4] & @CRLF) EndIf  
      Screenshot for the first example:

      Suggestions? Bugs?
      Just let me know
      Version 1.0:
      Initial release Version 1.1:
      Fixed: Drive Label will not work when you request the information from a remote system (currently using DriveGetLabel) Fixed: The current fix for the missing VolumeType property in some Windows versions will only work locally Added: New internal function (_WMIPropertyValue()) Version 1.2:
      Fixed: The drive exists & drive type check only worked locally when a drive was specified in $sDrive
    • By colombeen
      Hi guys,
      I'm trying to get some information using WMI, from the Win32_EncryptableVolume class.
      I exec my query, filter out the C-drive, but when I need more info using the objects methods, I only get 1 value back and I can't seem to retrieve the other out params that should be there.
      A very minimal version of what I'm trying to do (no error checking etc, very basic). You need to start SciTE as admin or you won't see any results in the console!
      #RequireAdmin $strComputer = @ComputerName $objWMIService = ObjGet("winmgmts:{impersonationLevel=impersonate}!\\" & $strComputer & "\root\CIMV2\Security\MicrosoftVolumeEncryption") $objWMIQuery = $objWMIService.ExecQuery("SELECT * FROM Win32_EncryptableVolume WHERE DriveLetter='C:'", "WQL", 0) For $objDrive In $objWMIQuery ConsoleWrite("> " & $objDrive.GetConversionStatus() & @CRLF) ConsoleWrite("> " & $objDrive.GetConversionStatus().ConversionStatus & @CRLF) ConsoleWrite("> " & $objDrive.GetConversionStatus().EncryptionPercentage & @CRLF) Next The result from the console is : 
      > 0 > > What I'm expecting to get back is : 
      > 0 > 0 > 0 When using powershell I get this (run as admin is required!!!) : 
      PS C:\WINDOWS\system32> (Get-WmiObject -namespace "Root\cimv2\security\MicrosoftVolumeEncryption" -ClassName "Win32_Encryptablevolume" -Filter "DriveLetter='C:'").GetConversionStatus() ... ConversionStatus : 0 EncryptionFlags : 0 EncryptionPercentage : 0 ReturnValue : 0 ... All I seem to be getting is the ReturnValue when I use the method.
      I've tried this on multiple methods, always ending up with the same result
      Anyone here who has experience with this type of thing?
  • Create New...