ProduKey

Name: ProduKey
Availability: InStock
Author: NirSoft

ProduKey is a small portable utility from NirSoft that reads and displays product keys (license keys) stored in the Windows registry for Microsoft products. It extracts keys for Windows, Microsoft Office, SQL Server, and Exchange Server, showing them in a simple table that you can copy or export.

What it does

When you run ProduKey, it instantly scans the registry and lists every Microsoft product key it finds. Each row shows the product name, product ID, and the full product key. You can copy keys to the clipboard or export the entire list to a text file, CSV, HTML, or XML. The whole process takes less than a second and requires no installation.

ProduKey can also retrieve keys from sources other than the local machine. You can point it at an external hard drive containing a Windows installation, connect to a remote computer on your network, or load offline registry hive files from a backup. A command line mode lets you script the extraction and save results to a file without opening the graphical interface.

Advantages

Portable, runs without installation from a USB drive or any folder
Retrieves keys instantly with no configuration needed
Can read keys from external drives, remote computers, and offline registry files
Command line mode allows scripted key extraction across multiple machines

Drawbacks

Only reads Microsoft product keys, does not cover third party software licenses
Some antivirus programs flag it as a potentially unwanted program due to its key reading capability
Cannot recover keys for newer Microsoft 365 subscription licenses tied to online accounts
No built in option to back up or restore keys, only displays and exports them

Who it is for

I use ProduKey every time I need to reinstall Windows or Office and cannot find the original license key. It is the fastest way to grab your product key before formatting a drive or replacing a computer. If you need to recover keys for non-Microsoft software as well, Magical Jelly Bean Keyfinder covers a wider range of programs, but for Microsoft products ProduKey is the most reliable tool I have found.

Frequently Asked Questions

Is ProduKey free?

Yes. ProduKey is free for personal and commercial use. It is part of the NirSoft utilities collection and has no ads, registration, or feature restrictions.

Why does my antivirus flag ProduKey?

Some antivirus programs classify ProduKey as a potentially unwanted program because it reads license keys from the Windows registry. This is a false positive. The program does not transmit any data and NirSoft is a trusted developer.

Can ProduKey recover Windows 11 product keys?

Yes. ProduKey reads product keys from Windows 7 through Windows 11. For newer installations tied to a Microsoft account via digital license, the key may show as a generic volume license key rather than a unique retail key.

Can ProduKey read keys from a dead computer?

Yes, if you can access the hard drive. Connect it to another computer as an external drive, then use ProduKey's option to load keys from an external Windows directory or offline registry hive files.

Features & How-To Guide

#	Feature	How to use
1	Display Windows product key	Run ProduKey.exe › Windows key displays automatically in first row of table with Product Key column.
2	Display Microsoft Office key	Run ProduKey.exe › Office keys (2003/2007/2010/2013/2016/2019/2021) appear as separate rows in table.
3	Copying klucza do schowka 2	Select row with key › Edit › Copy Product Key (Ctrl+C) › Key ready to paste.
4	Key export to text file	File › Save Selected Items (Ctrl+S) › Choose format (TXT/CSV/HTML/XML) › Save file with keys.
5	Key reading from external drive	File › Select Source › Check Load from external Windows directory › Provide path to Windows directory on another disk.
6	Key reading from remote computer	File › Select Source › Check Load from remote computer › Type computer name in network › Connect.
7	Key reading from offline registry	File › Select Source › Check Load from external registry files › Point to SOFTWARE files from Windows/System32/config folder.
8	Command-line execution	produkey.exe /stext output.txt › Exports all keys to text file without opening graphical interface.
9	Results sorting and filtering	Click column header (Product Name/Product Key/Product ID) › Sort ascending or descending.
10	Display SQL Server and Exchange keys	Run ProduKey.exe › SQL Server and Exchange Server keys appear automatically if these products are installed.