Close change all Office apps to finish the process.
Have your office CD Key office Ready change which is located on back of your regedit original CD case, in case you have lost that you can use.
Right-click the ProductID registry entry, click Delete, and regedit then click Yes.Change License button, you may need to install Office updates.Right click Registration folder and select rename.Then, view the version of Office that is listed in the right pane for the Productname registry entry.In the Open box, type Regedit, and then click. As it starts up you will be presented with a Microsoft Office 2003 Setup window, here you can enter your new product key and that is how to change office 2003 product key.
If you're not regedit signed in, select.
Type OldRegistration and press enter.For the episode selected guid subkey, select the ProductID string value in the right pane.Note: Changing Product key Manually involves editing the registry, hence you should be ultra careful, while doing this and additionally make a backup of regedit registry before episode you proceed.Note, in steps 4a through 4c, you created kofler a backup of the Registration subkey.Follow steps.If there.When you receive a message that prompts you for the product key, type the correct product key, and then click. Double click on file hkey_local_machine, then software, then Microsoft, then Office, then.0, then Registration.
For more information about how within to back up preet and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 (m/kb/322756/ ) How to back up and restore the registry in Windows.
Start any Office program.