Daniel Petri is a world-known IT professional, technical trainer and creator of one of the world’s largest IT knowledge bases – www.petri.com. Daniel consults to leading global Fortune 1000 companies in Microsoft IT Infrastructure and Engineering strategies.

For his contribution to the IT Pro community Daniel has received the Microsoft Most Valuable Professional (MVP) award for the 14th time. Daniel’s professional certifications include Microsoft Certified Technology Specialist, Microsoft Certified Systems Engineer, Microsoft Certified System Administrator and Microsoft Certified Trainer.

While working for Microsoft, Daniel serves as a Senior Premier Field Engineer (PFE) specializing in Windows Server OS and Active Directory.
Daniel now works for ObserveIT, makers of the Insider Threat Detection software, where he holds the role of Senior Solutions Architect, where he manages large deployment projects and partner and customer training programs.

In his spare time, Daniel rides a 1200cc 2015 model Ducati Multistrada 1200S bike and manages the Israeli Bikers forum.

You can contact Daniel at daniel-at-petri-dot-co-dot-il.

Change Office XP CD Key

How can I change the CD Key of my Office XP installation?

You can do it by editing the Registry. Apply this procedure:

This document contains instructions for editing the registry. If you make any error while editing the registry, you can potentially cause Windows to fail or be unable to boot, requiring you to reinstall Windows. Edit the registry at your own risk. Always back up the registry before making any changes. If you do not feel comfortable editing the registry, do not attempt these instructions. Instead, seek the help of a trained computer specialist.
  1. Locate your valid product CD Key, which is located on the back of the original CD case.
  2. On the Start menu, click Run.
  3. In the Open box, type Regedit, and then click OK.
  4. In Registry Editor, find the following subkey:

Click the plus sign (+) next to this folder. If you see only one subkey in this folder that has a 32-character {GUID} (globally unique identifier), select that subkey and go to step 5.

If you see more than one subkey that has a 32-character {GUID}, select each one until you find the one whose DisplayName value (in the right pane) matches your version of Office.

  1. For the selected {GUID} subkey, select the ProductID string value in the right pane.
  2. On the Edit menu, click Rename.
  3. Type


and then press ENTER.

  1. On the Registry menu, click Exit.

Reader note: Reader Mike Fairburn wrote:

“Great work and a great service to the Internet community. I looked at your page and tried the fix you suggest. I have, however, discovered that you need to do more than what you suggest. What you need to do is delete the digital ID above the Product ID. This forces the next Office XP app to open to request a valid key.”

Thanks. You guys should check his advice and see if it’s indeed required.

  1. Start any Office program.
  2. When the Microsoft Office XP User Information dialog box appears, type your valid product CD Key (located on the back of the CD case). Follow the instructions on your screen.

Reader note: Greg Guerrero from the USA wrote:

“If you open MS Word and it does not ask you for a CD Key, go to step 11.”

  1. Return to step 4, select the Registration folder.
  2. Right click Registration folder and select rename.
  3. Type OldRegistration and press enter.
  4. Follow steps 8 – 10.

Reader note: Crazy Dave from the USA wrote:

“In regards to your article “How can I change the CD Key of my Office XP installation?” a final step in some cases (as it was in mine) is to go to the HELP menue in the MSoXP application that you open, and select the “about…” option.”


Related articles

You may also want to read:

Related Topics:

  • Windows XP

    Don't have a login but want to join the conversation? Sign up for a Petri Account