One GUID key will contain the version number of Office installed in your system "Microsoft Office XP Professional Edition".Ĥ. Select each key and look at "ProductName" key in right-side pane. Under "Registration" key, you'll see one or more GUID (Globally Unique IDentifiers) containing a combination of alphanumeric characters in following format:ģ. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\10.0\RegistrationĢ. To change the product key you'll have to uninstall the Office suite from your system and then reinstall it.īut here is a small and simple tutorial which will help you in changing the product key without uninstalling the Office. It might be because your product key expired and you got a new one or it might be because you installed Office using pirated key and now you want to change the product key with a genuine one.
Many times you might want to change the product key of Office suite installed in your system.
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