Windows Product Key Finder Pro v2.5

A Full Review of Windows Product Key Finder Pro, a Free Key Finder Tool

Windows Product Key Finder Pro is an extraordinarily easy-to-use free key finder program. If you're ready to reinstall Windows or Microsoft Office but you can't find your product key, Windows Product Key Finder Pro can extract it from the Windows Registry instantly.

There's nothing at all fancy about Windows Product Key Finder Pro which is one of the reasons we like it so much. There are no menu options or unrelated features like with some other programs that find software serial numbers and product keys.

This review is of Windows Product Key Finder Pro v2.5. Please let us know if there's a newer version we need to review.

Please read our Key Finder Programs FAQ for more information on key finder programs in general.

More About Windows Product Key Finder Pro

Windows Product Key Finder Pro v2.5 in Windows Vista

Here are some more details on Windows Product Key Finder Pro, including what major operating system and software programs it finds product keys and serial numbers for:

Finds Keys for Operating Systems: Windows 7, Windows Vista, Windows Server 2003, Windows XP, and Windows 2000. Windows 10 and Windows 8 are said to be supported too but the program (as of version 2.5) didn't display the product key in either OS.

Finds Keys for Other Software: Microsoft Office 2013, Office 2010, Office 2007, Office 2003, and Office XP


  • Very small download size
  • Very simple interface
  • Instant display of your product key
  • Save or print product keys for backup purposes
  • Copy product keys to the clipboard
  • Doesn't need to be installed (portable)


  • Does not find any non-Microsoft product keys or serial numbers
  • May be incorrectly identified as malicious by antivirus software
  • The download page makes it way too easy to click the wrong download link
  • Doesn't work for Windows 8 or Windows 10

Thoughts on Windows Product Key Finder Pro

Windows Product Key Finder Pro is an excellent choice among the many free key finder utilities available. It's a quick download and easy to use. The product key (i.e., CD key, serial number, or installation key) is immediately displayed for your Windows operating system and Microsoft Office, if installed.

It doesn't find serial numbers and product keys for any other software than those titles listed above. While we have this listed as a con above, KeyFinder Pro doesn't claim to find other installation keys, so we can't really hold it against the program. However, compared to other products that find product keys, this is something it lacks.

There may be no advanced features like activation backup or unrelated "cool" features like a password generator, but Windows Product Key Finder Pro still does what it's supposed to do perfectly—it shows you your product key. Plain and simple.

Windows Product Key Finder Pro isn't a big bag of tricks. It does one thing, for free, in a small, simple package. You might like a program that doesn't try to stand out from the crowd by its sheer number of crazy features that rarely get used.

We absolutely recommend Windows Product Key Finder Pro to anyone needing to dig up that lost Windows or Office product key, just not if you need it for the newest Windows versions or MS Office programs.

When on the download page, after choosing Download from the bottom of the page, be sure to then pick the small link below the large advertisement. The one below the ad is how you actually download the program; the other link will take you to a different and unrelated download page. You might have to exit the ad to see the link.

Didn't find what you were looking for with Windows Product Key Finder Pro?

If Windows Product Key Finder Pro didn't find a serial number you were after, just try another free key finder program.

You should especially try an alternative if you need the product key for your Windows 10 or Windows 8 computer since you probably can't get it with Windows Product Key Finder Pro (since we couldn't).

Two free key finders that are known to work with those newer versions of Windows include Belarc Advisor and Magical Jelly Bean Keyfinder.