Finding the Windows Product Key

♠ Posted by Damon at 5:11:00 AM

You can easily create a simple VBscript that will read the value out of the registry and then translate it into the format that you need for reinstalling.

Copy and paste the following into a Notepad window:

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

You’ll need to use File -> Save As, change the “Save as type” to “All Files” and then name it productkey.vbs or something similar ending with the vbs extension. We’d recommend saving to the desktop for easy access.

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Once you’ve saved it, you can just double-click and the popup window will show you your product key.

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Note :- If you use CTRL + C when the popup window is active, it will copy the contents of the window to the clipboard, and then you can paste it into Notepad or somewhere else.