How to Change a Product Key in Regedit

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Microsoft products require a unique product key to make sure that the software isn't pirated. Each product has a different key, and the software can only be run on a limited number of computers. The Office product key can be found in the Windows registry, a database that stores different settings. The Regedit tool allows you to manipulate the Windows registry. Once you know where to go within the confusing registry layout, you can access and even change a stored product key.

  • Click "Start," type "regedit" in the search bar and press "Enter." A Registry Editor window will open up.

  • Click on the left-hand pane under "Computer." Navigate to the following folder:

    HKEY_LOCAL_MACHINE \Software\Microsoft

  • Navigate to "Office\12.0\Registration." There might be more than one folder under the "Registration" folder, but check each one for an option in the right pane named "ProductID."

  • Double-click on "ProductID" to open the "Edit String" pop-up. The number listed in the space is your product key. Change the key here, then click "OK" to save a new key.

  • Go back to the "Microsoft" folder root and navigate to "WindowsNT/CurrentVersion." The Windows operating system product key is accessible by double-clicking the "ProductID" option. Edit it and click "OK" to save the new product ID, but be very careful as an invalid product ID can cause your system to lock.

Tips & Warnings

  • Back up your registry before making any changes (see Resources).

References

  • Photo Credit laptop image by martini from Fotolia.com
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