Determine and Change your Windows version or Product Key

Here are some commands, tools and links to help determine and/or change your Windows Product Key.

  • Run the command: winver
  • Control Panel-->System
  • ProduKey from NirSoft
  • Retrieve my Windows 2000/XP/2003 or Office 2000/XP CD Key tool: Magical Jelly Bean Keyfinder
  • Other tool to read Microsoft registry product keys:  CD Key Reader
  • Tool to determine what hardware "XP activation" detected has changed on your system:


How to change the Volume Licensing product key (or Corporate Key) on a Windows XP SP1-based computer.