MSKeyViewer Plus v2.5.0

A Full Review of MSKeyViewer Plus, a Free Key Finder Tool

MSKeyViewer Plus is a portable free key finder program that's easy to read and can find the product key for a large number of programs.

Advanced features can be accessed through command line switches.

This review is of MSKeyViewer Plus v2.5.0. Please let me know if there's a newer version I need to review.

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

More About MSKeyViewer Plus

MSKeyViewer Plus v2.5.0 in Windows 7

Here are some more details on MSKeyViewer Plus, including what major operating system and software programs it finds product keys and serial numbers for:

Finds Keys for Operating Systems: Windows 7Windows Vista, Windows XP, Windows 2000, Windows ME, Windows 95/98, and Windows Server 2012, 2008 ,and 2003. 64-bit versions are also supported. Windows 8 is said to be supported but it doesn't work as it should

Finds Keys for Other Software: Microsoft Office version 2010 and Office 2007, Office 2003, Office XP, Office 2000, plus a long list of other Microsoft and non-Microsoft programs. Microsoft Office 2013 is also supported but it doesn't work as it should


  • Finds product keys for dozens of programs
  • Small download size
  • Can copy some or all of the product keys to the clipboard
  • Easy to read
  • Includes service pack and product ID information
  • Portable


  • Truncates Windows 8 and Office 2013 product keys while similar programs don't
  • Some basic features require command line switches
  • Shows the wrong key for Windows 10

My Thoughts on MSKeyViewer Plus

At first glance, MSKeyViewer Plus looks like it has lots of options and settings, but there's essentially just one thing you can do, which is copy out product keys.

Programs are listed in their own section to make room for several programs to display at once. You can expand any of the programs to view the product key, service pack level, and product ID. You can copy all three of these things out of MSKeyViewer Plus at once but you unfortunately can't copy just the product key.

The About button has a whole list of the supported programs, which includes things like popular antivirus software and some Adobe products.

Some key finder programs let you connect to a remote computer to find its product keys. Also, similar programs can export the list of product keys to a file. MSKeyViewer Plus supports these two abilities but you must access them through command line switches, which can be confusing. More information about using these advanced features can be found on their download page.

Most key finder programs that support Windows 8 will display the correct product key information, Belarc Advisor and ProduKey being two examples. Unfortunately, MSKeyViewer Plus doesn't. When I tested it, the program opened in Windows 8 and appeared to work just fine, but the product key for Windows and Microsoft Office 2013 were truncated, making them useless.

Try a different free key finder program or maybe even a premium key finder tool if this one didn't have the features you want or couldn't find the key you're after.