Windows Management Instrumentation (WMI) on 64-bit Excel

bfreescott

Board Regular
Joined
Aug 6, 2015
Messages
115
I use the following code to return the owner username of network files. It works perfectly in 32-bit Excel, even on 64-bit Windows. In 64-bit Excel, no error is thrown, it simply doesn't return anything.
Thoughts?

VBA Code:
Set objWMIService = GetObject("winmgmts:")

    Set objFileSecuritySettings = objWMIService.Get("Win32_LogicalFileSecuritySetting=""" & Replace(strFileName, "\", "\\") & """")
    intRetVal = objFileSecuritySettings.GetSecurityDescriptor(objSD)
    If intRetVal = 0 Then GetFileOwner = objSD.Owner.Name
 

Excel Facts

Create a Pivot Table on a Map
If your data has zip codes, postal codes, or city names, select the data and use Insert, 3D Map. (Found to right of chart icons).
how does the rest of your code look. Are you declaring the variables with ptrsafe?
 
Upvote 0
There's not much else to the code. Just some error handling, which is not triggered. Also, it's a function, so no variables are declared, just the one string variable, strFileName, which is passed to the function.
 
Upvote 0
I am using excel x64bit and your WMI code worked for me just fine when tested on a local file. (Not on a network file as I tested at home)

I found this code which uses calls to the advapi32.dll functions for obtaining the security descriptor of the file. The code in the link is actually written for x32bit processes but I have adapted it for you so that it works in excel x64bit.

I hope this code works for you:
VBA Code:
Option Explicit

Private Declare PtrSafe Function GetFileSecurity Lib "advapi32.dll" _
    Alias "GetFileSecurityA" ( _
    ByVal lpFileName As String, _
    ByVal RequestedInformation As Long, _
    pSecurityDescriptor As Byte, _
    ByVal nLength As Long, _
    lpnLengthNeeded As Long _
) As Long

Private Declare PtrSafe Function GetSecurityDescriptorOwner Lib "advapi32.dll" _
    (pSecurityDescriptor As Any, _
    pOwner As LongLong, _
    lpbOwnerDefaulted As Long) As Long

Private Declare PtrSafe Function LookupAccountSid Lib "advapi32.dll" _
    Alias "LookupAccountSidA" ( _
    ByVal lpSystemName As String, _
    ByVal Sid As LongLong, _
    ByVal name As String, _
    cbName As Long, _
    ByVal ReferencedDomainName As String, _
    cbReferencedDomainName As Long, _
    peUse As Long) As Long

Private Const OWNER_SECURITY_INFORMATION = &H1
Private Const ERROR_INSUFFICIENT_BUFFER = 122&
   

Function GetFileOwner(ByVal szfilename As String) As String

   Dim bSuccess As Long       ' Status variable
   Dim sizeSD As Long         ' Buffer size to store Owner's SID
   Dim pOwner As LongLong        ' Pointer to the Owner's SID
   Dim name As String         ' Name of the file owner
   Dim domain_name As String  ' Name of the first domain for the owner
   Dim name_len As Long       ' Required length for the owner name
   Dim domain_len As Long     ' Required length for the domain name
   Dim sdBuf() As Byte        ' Buffer for Security Descriptor
   Dim nLength As Long        ' Length of the Windows Directory
   Dim deUse As Long          ' Pointer to a SID_NAME_USE enumerated


    bSuccess = GetFileSecurity( _
            szfilename, _
            OWNER_SECURITY_INFORMATION, _
            0, _
            0&, _
            sizeSD)

    If (bSuccess = 0) And _
       (Err.LastDllError <> ERROR_INSUFFICIENT_BUFFER) Then
          MsgBox "GetLastError returned  : " & Err.LastDllError
          Exit Function
    End If

    ' Create a buffer of the required size and call GetFileSecurity again.
    ReDim sdBuf(0 To sizeSD - 1) As Byte

    ' Fill the buffer with the security descriptor of the object specified
    ' by the szfilename parameter. The calling process must have the right
    ' to view the specified aspects of the object's security status.
  
    bSuccess = GetFileSecurity( _
            szfilename, _
            OWNER_SECURITY_INFORMATION, _
            sdBuf(0), _
            sizeSD, _
            sizeSD)

    If (bSuccess <> 0) Then
  
    ' Obtain the owner's SID from the Security Descriptor.
    '
       bSuccess = GetSecurityDescriptorOwner(sdBuf(0), pOwner, 0&)
       If (bSuccess = 0) Then
           MsgBox "GetLastError returned : " & Err.LastDllError
            Exit Function
       End If
  
    ' Retrieve the name of the account and the name of the first
    ' domain on which this SID is found.  Passes in the Owner's SID
    ' obtained previously.  Call LookupAccountSid twice, the first time
    ' to obtain the required size of the owner and domain names.
  
       bSuccess = LookupAccountSid(vbNullString, pOwner, name, name_len, _
                                   domain_name, domain_len, deUse)
       If (bSuccess = 0) And _
          (Err.LastDllError <> ERROR_INSUFFICIENT_BUFFER) Then
          MsgBox "GetLastError returned : " & Err.LastDllError
           Exit Function
       End If
  
    '  Allocate the required space in the name and domain_name string
    '  variables. Allocate 1 byte less to avoid the appended NULL character.
    '
       name = Space(name_len - 1)
       domain_name = Space(domain_len - 1)
  
    '  Call LookupAccountSid again to actually fill in the name of the owner
    '  and the first domain.
    '
       bSuccess = LookupAccountSid(vbNullString, pOwner, name, name_len, _
                                   domain_name, domain_len, deUse)
       If bSuccess = 0 Then
           MsgBox "GetLastError returned : " & Err.LastDllError
           Exit Function
       End If
  
       GetFileOwner = name

    End If

End Function

VBA Code:
Sub Test()
    MsgBox GetFileOwner("Enter Your Network FilePathName Here")
End Sub
 
Upvote 0

Forum statistics

Threads
1,223,231
Messages
6,170,884
Members
452,364
Latest member
springate

We've detected that you are using an adblocker.

We have a great community of people providing Excel help here, but the hosting costs are enormous. You can help keep this site running by allowing ads on MrExcel.com.
Allow Ads at MrExcel

Which adblocker are you using?

Disable AdBlock

Follow these easy steps to disable AdBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the icon in the browser’s toolbar.
2)Click on the "Pause on this site" option.
Go back

Disable AdBlock Plus

Follow these easy steps to disable AdBlock Plus

1)Click on the icon in the browser’s toolbar.
2)Click on the toggle to disable it for "mrexcel.com".
Go back

Disable uBlock Origin

Follow these easy steps to disable uBlock Origin

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back

Disable uBlock

Follow these easy steps to disable uBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back
Back
Top