Reading Windows 10 product ID with code.

[Mark AJA]

I am trying to read the product ID with Windows 10.

With Windows 95 to windows 7, I could read the OEM number from the registry.
Using RegEdit.exe, I can read the value and it is still at the old Windows 7 OEM number location.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductID
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductID

The same code that worked with Windows 7 now returns an error value of 2.

I can create a WMIC file to read the product ID and save it to a file,
but this will display the WMIC file for a fraction of a second.

Dose anybody know of a good way to get the product ID?

Or code to read the registry at this location.

I am using Visual Basic 5.

    regErrorValue = fReadValue("HKLM", "SOFTWARE\Microsoft\Windows NT\CurrentVersion", "ProductID", "S", "<Unknown ProductID>", sSetting)
    OEM_number = sSetting
    If OEM_number = "<Unknown ProductID>" Then
      OEM_number = OEM_number_from_WMIC()
    End If

'''



Private Function OEM_number_from_WMIC(Optional ByVal errorValue As String = "") As String
  ' Get the OEM / Product ID / OS Serial number.
  ' Note: This code will not work with Windows 7 or before.
  '       This code works with Windows 10.
  '       Not tested with Windows 8.0 or Windows 8.1
  Const FileBytesOver = 10
  Const FileOverXHours = 2
  Dim InfoFile As String
  Dim WMIC_bat_File As String
  Dim fileHandle As Integer
  Dim fileData As String
  OEM_number_from_WMIC = errorValue
  On Error GoTo WMIC_Error
  InfoFile = "OEM_Information.txt"
  WMIC_bat_File = App.path + "\_Read_OEM_value.bat"
  ' Step 1: Check if the 'InfoFile' file exists and is not too old.
  ' If GetFileSize(InfoFile) < 0 Then ' <0 = not found
  ' If GetFileSize(InfoFile) = 0 Then ' =0 = found but empty
  If (frm_MainWindow.GetFileSize(InfoFile) < FileBytesOver) Or (DateDiff("H", frm_MainWindow.GetFileDate(InfoFile), Now) > FileOverXHours) Then
    ' File not found or under 10 bytes or over 5 hours old.
    ' Step 2: Create the WMIC_bat_File.
    fileHandle = FreeFile
    Open WMIC_bat_File For Output As #fileHandle
    Print #fileHandle, "@REM Add @ to start of line to hide command line."
    Print #fileHandle, "@REM Batch file " + WMIC_bat_File
    Print #fileHandle, "@REM reads and saves the computer product id to file " + InfoFile
    Print #fileHandle, "@REM This file was created on; " + Format$(Now, "d/mm/yyyy - h:nn:ssampm")
    Print #fileHandle, ""
    Print #fileHandle, "@REM Code by Mark A. Agius, (c)2015"
    Print #fileHandle, ""
    Print #fileHandle, "@CLS"
    Print #fileHandle, "@WMIC /OUTPUT:" + InfoFile + " OS GET SERIALNUMBER"
    ' Print #fileHandle, "@ECHO File created..."
    ' Print #fileHandle, "@pause"
    Close #fileHandle
    fileHandle = 0
    ' Step 3: Run the WMIC_bat_File. (This will create the InfoFile file)
    Call mod_FileOpen.Load_File_or_URL(WMIC_bat_File, "", 0)
  End If
  ' Step 4: Read the InfoFile file and return the last line of text.
  fileHandle = FreeFile
  Open App.path + "\" + InfoFile For Input As #fileHandle
  While Not EOF(fileHandle)
    'Line Input #fileHandle, fileData ' Line input keeps spaces at end of line.
    Input #fileHandle, fileData
    fileData = Trim$(fileData)
    If fileData <> "" Then
      ' Computer product id is 23 characters long with Windows 10.
      If Len(fileData) >= 20 And Len(fileData) <= 45 Then
        OEM_number_from_WMIC = fileData
      End If
    End If
  Wend
  Close #fileHandle
  fileHandle = 0
  Exit Function
WMIC_Error:
  ' Error code.
  ' OEM_number_from_WMIC = "<" + Error + " (" & Err & ")>"
  
  Exit Function
End Function

[DataMiser]

I haven't tried this under Windows 10 but this VBS script works on XP and 7

Set WshShell = CreateObject("WScript.Shell")
MsgBox ConvertToKey(WshShell.RegRead("HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DigitalProductId"))
 
Function ConvertToKey(Key)
    Const KeyOffset = 52
    i = 28
    Chars = "BCDFGHJKMPQRTVWXY2346789"
    Do
        Cur = 0
        x = 14
        Do
            Cur = Cur * 256
            Cur = Key(x + KeyOffset) + Cur
            Key(x + KeyOffset) = (Cur \ 24) And 255
            Cur = Cur Mod 24
            x = x -1
        Loop While x >= 0
        i = i -1
        KeyOutput = Mid(Chars, Cur + 1, 1) & KeyOutput
        If (((29 - i) Mod 6) = 0) And (i <> -1) Then
            i = i -1
            KeyOutput = "-" & KeyOutput
        End If
    Loop While i >= 0
    ConvertToKey = KeyOutput
End Function

[Mark AJA]

Thank you for your code. It works with Windows 10 but..
I am trying to get the Computer Product ID (Known as the OEM number with Windows 95 - Windows 7)
Your code returns the digital product ID.

Digital product ID format = XXXXX-XXXXX-XXXXX-XXXXX-XXXXX (Don't want this)
OEM / Product ID format = 00000-OEM-0000000-00000 (Windows 7)
OEM / Product ID format = 00000-00000-00000-XXXXX (Windows 10)


The following VBS script will get this and works with Windows 10.

Set WshShell = CreateObject("WScript.Shell")
MsgBox WshShell.RegRead("HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductID")

I can read the registry at; HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DigitalProductId
but not at; HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductID

So I need the Visual Basic 5 code for
Set WshShell = CreateObject("WScript.Shell")
Var$ = WshShell.RegRead(...)