Lost product keys,here is how to find it

In this post, we look at the tools that can find your product keys (ex.for windows) or other apps if you’ve lost it, there is also a manual option too at the end.

#1.Belarc Advisor

The Belarc Advisor builds a detailed profile of your installed software and hardware, network inventory, any missing Microsoft hotfixes, anti-virus status, security benchmarks, and displays information in your browser window, no adware/toolbars to worry about, and an extensive list of other important computer data.It also includes a list of software licenses for Microsoft Office, Windows, antivirus programs, and of other applications and software installed on your system.All of your PC profile information is kept private on your PC and is not sent to any web server.

Operating Systems: Free version runs on Windows 10, 2016, 8.1, 2012 R2, 8, 2012, 7, 2008 R2, Vista, 2008, 2003 SP2, XP SP3. Both 32-bit and 64-bit Windows are supported. Commercial products runs on all other versions of Windows and on the Macintosh OS X, Linux, and Solaris operating systems.

Belarc Advisor

#2.The Magical Jelly Bean’s Keyfinder

Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key used to install windows from your registry. It also has a community-updated configuration file that retrieves product keys for many other applications. Another feature is the ability to retrieve product keys from unbootable Windows installations.

Magical Jelly Bean

For Mac, there is separate utility https://mac-product-key-finder.com/

[ Bonus ] if you want to find WiFi Password, check this one https://www.magicaljellybean.com/wifi-password-finder/

Other than recovering the lost passwords to WIFI network, you would be able to find a lot of more useful information like SSID (Service Set IDentifier), Password, Authentication type, Encryption method and Connection type. The program can decrypt the following security type’s: WEP, WPA, WPA2, WPA-PSK, WPA2-PSK.


The LicenseCrawler can discover application product keys and other serial numbers or licenses very quickly and supports all versions of Windows operating system from Windows 95 over Windows 7 to Windows Server 2008 R2 (64Bit).

The LicenseCrawler has been tested by many software distribution teams against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean.

License Crawler

The portable-version can be run from any location and would be a perfect fit for a USB stick. The software is ideal to backup your system, help IT-Service members and for forensic services.


Win keyfinder is a freeware Utility to find Windows Product/CD Key that was used during Windows Installation from system Registry, it can retrieve the lost product key from MS Windows 8, MS Windows 8.1, Windows XP, win 2000, windows me, 98, 2003 and .NET Product keys from the registry and display it for you.

Usually the keys are encoded and stored in the registry it decodes it and also allows to change Windows XP, 2003, and .Net Product Keys.

Some of the notable features include viewing keys for :

  • Windows 8 and Windows 8.1 Product CD Key [Both 32 and 64 bit OS
  • View/Change XP Key
  • Windows 10, Win 8/ Win 8.1 / Win 7 / Win Vista 32bit / 64 bit Product/CD Keys.
  • View/Change MS office Key
  • Win98 Key
  • Win2000 Key
  • .Net Key
  • Win2003 Key
  • Save Your Product Key By Encrypting It
  • Generate Unique Passwords By Entering your Combination of Key Code
  • Support for MS Office 2007 and 2010 32 bit OS, Soon 64 bit Office support will be added


ProduKey utility extracts the ProductID and the CD-Key of Microsoft Office (Microsoft Office 2003, Microsoft Office 2007), Windows (Including Windows 8/7/Vista), Exchange Server, and SQL Server installed on your computer. You can view this information for your current running operating system, or for another operating system/computer – by using command-line options. This utility can be useful if you lost the product key of your Windows/Office, and you want to reinstall it on your computer.


#6.Manual Options :

If you’re not interested in trying the above tools, you can follow manual option too. Press Windows key + R to launch the Run menu, type in cmd, and hit ENTER. Now search the registry for the software in question and keep hitting ‘Find Next’ until the serial numbers shows up in the data column.

If you’re looking for script do the search here is the one below. Open Notepad, paste the following code, and save the file as getWInKey.vbs

Set WshShell = CreateObject("WScript.Shell")
MsgBox getWinKey(WshShell.RegRead("HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DigitalProductId"))
Function getWinKey(Key)
Const KeyOffset = 52
i = 28
Cur = 0
x = 14
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

On double-clicking this file, the VB script will reveal your Windows product key.

Hope you’ve successfully recovered your product keys. If I have missed out any other utilities, please post it in the comment section.

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Lost product keys,here is how to find it
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In this post, we look at the tools that can find your product keys (ex.for windows) or other apps if you've lost it, there is also a manual option too at the end.
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