How can I change the CD Key of my Office XP / 2003 / 2007 installation?

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:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\10.0\Registration

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.

5. For the selected {GUID} subkey, select the ProductID string value in the right pane.

6. On the Edit menu, click Rename.

7. Type OldProductID and then press ENTER.

8. On the Registry menu, click Exit.

9. Start any Office program.

10. 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.

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

11. Return to step 4, select the Registration folder.

12. Change the value if key “ProductID” to “OldProductID”

13. Delete the key DigitalProductId

14. Follow steps 8 – 10.

“If you open MS Word and it still does not ask you for a CD Key, go to step 15.”

15. Return to step 4, select the Registration folder.

16. Right click Registration folder and select rename.

17. Type OldRegistration and press enter.

18. Follow steps 8 – 10.

NOTE

“Always backup your registry before making any changes, this site will not be responsible for any data loss you may incur.”