
Right-click the DigitalProductID registry entry, click Delete, and then click Yes. After you find the GUID that contains the version of your Office program, follow these steps: Then, view the version of Office that is listed in the right pane for the Productname registry entry. Each GUID is specific to a program that is installed onĬlick a GUID. Under the Registration subkey, there may be several Globally Unique Identifiers (GUID) that contain a combination of alphanumericĬharacters. Office XP HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\10.0\Registration Office 2003 HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\11.0\Registration Office XP HKEY_LOCAL_MACHINE \Software\Microsoft\Office\10.0\RegistrationĢ007 Office system HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\12.0\Registration Office 2003 HKEY_LOCAL_MACHINE \Software\Microsoft\Office\11.0\Registration Locate and then click the following subkey, depending on your version of Windows and of Office:Ģ007 Office system HKEY_LOCAL_MACHINE \Software\Microsoft\Office\12.0\Registration
Click Start, click Run, type regedit, and then click OK.
It explains how to reset the key (so it asks again) in Office XP->2007 without reinstalling. From MS KB: " How to change the product key for Office XP, for Office 2003, and for the 2007 Office system".