Cara Tukar Microsoft Office Product Key

Berikut merupakan cara-caranya :

1. Close all Office programs.
2. Click Start, click Run, type regedit, and then click OK.
3. Locate and then click the following subkey, depending on your version of Windows and of Office:
   
   32-bit versions
   2007 Office system
   

   HKEY_LOCAL_MACHINE \Software\Microsoft\Office\12.0\Registration

   
   Office 2003
   

   HKEY_LOCAL_MACHINE \Software\Microsoft\Office\11.0\Registration

   
   Office XP
   

   HKEY_LOCAL_MACHINE \Software\Microsoft\Office\10.0\Registration
   64-bit versions
   2007 Office system
   

   HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\12.0\Registration

   
   Office 2003
   

   HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\11.0\Registration

   
   Office XP
   

   HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\10.0\Registration

   
   
4. Export theRegistration subkey.
   
   You can make a backup of the values under the Registration subkey if the new product key does not work. To do this, follow these steps:
   1. Right-click theRegistrationsubkey, and then click Export.
   2. In the Save in list, select a location to save the registration entries.
   3. In the File name box, type a name for the .reg file that you want to export, and then click Save.
   
   Note In steps 4a through 4c, you created a backup of theRegistration subkey. You can restore the Registry settings of theRegistration subkey by double-clicking the .reg file that you saved in step 4c. The contents of the .reg file are automatically exported to the Registry.
5. Under the Registration subkey, there may be several Globally Unique Identifiers (GUID) that contain a combination of alphanumeric characters. Each GUID is specific to a program that is installed on your computer.
   
   Click a GUID. Then, view the version of Office that is listed in the right panel for theProductname registry entry. After you find the GUID that contains the version of your Office program, follow these steps:
   1. Right-click the DigitalProductIDregistry entry, click Delete, and then click Yes.
   2. Right-click the ProductIDregistry entry, click Delete, and then click Yes.
6. Close Registry Editor.
7. Open an Office program, such as Microsoft Word. When you receive a message that prompts you for the product key, type the correct product key, and then click OK.

Rujukan : Microsoft