How to find Windows 10, 8, 7 Product Key

  • in Windows
Windows 10 or 8 or 7 Product Key Finder the Easy Way

If you are trying to upgrade/reinstall Windows OS(operating system) or may want to move the Windows copy to a new PC (Personal Computer), you may(because the product key for some version of Windows comes with embedded in the computer’s UEFI firmware or BIOS) require typing the Windows key.

But if you lost or forgot where you had stored the product key of your Windows 10/ Windows 8 / Windows 7 OS, do not despair, you can still recover it from the computer on which it’s installed. You should first read this article to find your Windows product key and store it somewhere safely.

I have shown 2 simple solutions to extract your product key from the OS installed on your PC.

Let's find Windows 10, 8, 7 product key

Use NirSoft’s ProduKey to Recover Windows product key

Use NirSoft’s ProduKey to Recover Windows product key

The easy method to get the product key is "Nirsoft's ProduKey" a third-party program which instantly find Product ID and Key of all Microsoft applications installed on your system.

Note: As it is a tool to extract Microsoft applications keys, some anti-viruses might flag this program as a virus or malware, but you can put your full trust in this program - it's safe and clean, you don’t have to worry about viruses or malware.

Windows product key without using third party software

Windows product key without using third party software
  1. First open Notepad or any other text editor, I prefer Notepad++ (Best free alternative to Notepad).
  2. Copy and paste the following code in the Notepad. The code may seem ugly, lengthy or you may not understand but nothing to worry, it is VBScript(Visual Basic Script, developed by Microsoft).
  3. Save the file to the desktop for easy access. Make sure to change the “Save as type” to “All Files” and then name it ProductKeyInfo.vbs or something similar but ending with the ".vbs" extension. For extra sure type the File name enclosed in double quotes, for example, "ProductKeyInfo.vbs"
    '* Script: Windows Key Information
    '* https://www.proy.info            *
    '* Modified On 02/01/2017          *
    '***********************************
    
    Dim strComputer, objWMIService, objItem, Caption, colItems, ProductData, OSVersion, InstallDate, RegisteredUser, ProductID, systemOsType
    Set dtmConvertedDate = CreateObject("WbemScripting.SWbemDateTime")
    
    strComputer = "."
    Set objWMIService = GetObject("winmgmts:\" & strComputer & "rootcimv2")
    Set colItems = objWMIService.ExecQuery("Select * from Win32_OperatingSystem",,48)
    For Each objItem in colItems
        Caption = objItem.Caption
        OSVersion = Trim(objItem.Caption) & " (Build " & objItem.Version & ")"
        
        dtmConvertedDate.Value = objItem.InstallDate
        InstallDate = dtmConvertedDate.GetVarDate
    
        RegisteredUser = objItem.RegisteredUser
        ProductID = Trim(objItem.SerialNumber)
    
    Next
    
    
    'Find Processor architecture
    Set WshShell = CreateObject("WScript.Shell")
    OsType = WshShell.RegRead("HKLMSYSTEMCurrentControlSetControlSession ManagerEnvironmentPROCESSOR_ARCHITECTURE")
     
    If OsType = "x86" then
    systemOsType = "32-bit Operating System"
    elseif OsType = "AMD64" then
    systemOsType = "64-bit Operating System"
    end if
    
    
    Function WindowsKey
    
        Set WshShell = CreateObject("WScript.Shell")
        Key = WshShell.RegRead("HKLMSOFTWAREMicrosoftWindows NTCurrentVersionDigitalProductId")
    
        Const KeyOffset = 52
        Dim isWin8, Maps, i, j, Current, KeyOutput, Last, keypart1, insert
        'Check if OS is Windows 8
        isWin8 = (Key(66)  6) And 1
        Key(66) = (Key(66) And &HF7) Or ((isWin8 And 2) * 4)
        i = 24
        Maps = "BCDFGHJKMPQRTVWXY2346789"
        Do
           	Current= 0
            j = 14
            Do
               Current = Current* 256
               Current = Key(j + KeyOffset) + Current
               Key(j + KeyOffset) = (Current  24)
               Current=Current Mod 24
                j = j -1
            Loop While j >= 0
            i = i -1
            KeyOutput = Mid(Maps,Current+ 1, 1) & KeyOutput
            Last = Current
        Loop While i >= 0
        keypart1 = Mid(KeyOutput, 2, Last)
        insert = "N"
        KeyOutput = Replace(KeyOutput, keypart1, keypart1 & insert, 2, 1, 0)
        If Last = 0 Then KeyOutput = insert & KeyOutput
        WindowsKey = Mid(KeyOutput, 1, 5) & "-" & Mid(KeyOutput, 6, 5) & "-" & Mid(KeyOutput, 11, 5) & "-" & Mid(KeyOutput, 16, 5) & "-" & Mid(KeyOutput, 21, 5)
    
    
    End Function
    
    ProductData = OSVersion & vbNewLine & systemOsType & vbNewLine & vbNewLine & "Install Date: " & InstallDate & vbNewLine & "Registered To: " & RegisteredUser & vbNewLine & "Windows PID: " & ProductID & vbNewLine & "Windows Key: " & WindowsKey
    
    'Show messbox if save to a file
    If vbYes = MsgBox(ProductData  & vblf & vblf & "Click Yes to save these information to a file?", vbYesNo + vbQuestion, "BackUp Windows Key Information") then
        Save ProductData
    End If
    
    'Save data to a file
    Function Save(Data)
        Dim fso, fName, txt,objshell,UserName
        Set objshell = CreateObject("wscript.shell")
        'Get current user name
        UserName = objshell.ExpandEnvironmentStrings("%UserName%")
        'Create a text file on desktop
        fName = "C:Users" & UserName & "DesktopWindowsKeyInfo.txt"
        Set fso = CreateObject("Scripting.FileSystemObject")
        Set txt = fso.CreateTextFile(fName)
        txt.Writeline Data
        txt.Close
    End Function
    
     
  4. Now click the file "ProductKeyInfo.vbs" on your desktop and a pop-up will show up with your Windows Product Key with other related information. Just like below.
Windows 10 or 8 or 7 Product Key Finder

The main code is from Microsoft's script center. I made some changes to include more information.

https://gallery.technet.microsoft.com/scriptcenter/Backup-Windows-product-key-1a200645

About This Author

My name is Parameshwar Roy (P. Roy), and I am a web developer. This is my personal blog to record my own thoughts. Though I am not a natural writer, I love to share my experiences. Hope my experiences will be useful to you…read more about me

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